Add sitemap command and handler

Outside of the test it always got an empty index and therefore never
found any missing pages.

.gitignore

@@ -1,3 +1,7 @@
-/oddmu
 test.md
 /testdata/
+/oddmu-darwin-*
+/oddmu-linux-*
+/oddmu-windows-*
+/oddmu.exe
+/oddmu

Makefile

@@ -1,29 +1,33 @@
 SHELL=/bin/bash
 PREFIX=${HOME}/.local
 
-.PHONY: help build test run upload docs install missing
+.PHONY: help build test run upload docs install priv
 
 help:
 	@echo Help for Oddmu
-	@echo =====================
-	@echo
+	@echo ==============
 	@echo make run
 	@echo "    runs program, offline"
-	@echo
 	@echo make test
 	@echo "    runs the tests without log output"
-	@echo
+	@echo make check
+	@echo "    checks the code with golint and gocritic"
+	@echo make fix
+	@echo "    fixes formatting issues with goimports instead of go fmt"
 	@echo make docs
 	@echo "    create man pages from text files"
-	@echo
 	@echo make build
 	@echo "    just build it"
-	@echo
 	@echo make install
 	@echo "    install the files to ~/.local"
-	@echo
+	@echo sudo make install PREFIX=/usr/local
+	@echo "    install the files to /usr/local"
 	@echo make upload
 	@echo "    this is how I upgrade my server"
+	@echo make dist
+	@echo "    cross compile for other systems"
+	@echo make clean
+	@echo "    remove built files"
 
 build: oddmu
 
@@ -31,29 +35,58 @@ oddmu: *.go
 	go build
 
 test:
+	rm -rf testdata/*
 	go test -shuffle on .
 
+check:
+	golint
+	gocritic check
+
+fix:
+	goimports -w *.go
+
+
 run:
 	go run .
 
 upload: build
 	rsync --itemize-changes --archive oddmu sibirocobombus.root:/home/oddmu/
-	ssh sibirocobombus.root "systemctl restart oddmu; systemctl restart alex; systemctl restart claudia; systemctl restart campaignwiki"
+	ssh sibirocobombus.root "systemctl restart oddmu; systemctl restart alex; systemctl restart claudia; systemctl restart campaignwiki; systemctl restart community"
 	@echo Changes to the template files need careful consideration
 
 docs:
-	cd man; make
+	cd man; make man
 
 install:
 	for n in 1 5 7; do install -D -t ${PREFIX}/share/man/man$$n man/*.$$n; done
-	install -D -t ${PREFIX}/.local/bin oddmu
+	install -D -t ${PREFIX}/bin oddmu
 
-# More could be added, of course!
-dist: oddmu-linux-amd64.tar.gz
+clean:
+	rm --force oddmu oddmu.exe oddmu-{linux,darwin,windows}-{amd64,arm64}{,.tar.gz}
+	cd man && make clean
+
+dist: oddmu-linux-amd64.tar.gz oddmu-linux-arm64.tar.gz oddmu-darwin-amd64.tar.gz oddmu-windows-amd64.tar.gz
 
 oddmu-linux-amd64: *.go
 	GOOS=linux GOARCH=amd64 go build -o $@
 
+oddmu-linux-arm64: *.go
+	env GOOS=linux GOARCH=arm64 GOARM=5 go build -o $@
+
+oddmu-darwin-amd64: *.go
+	GOOS=darwin GOARCH=arm64 go build -o $@
+
+oddmu.exe: *.go
+	GOOS=windows GOARCH=amd64 go build -o $@
+
+oddmu-windows-amd64.tar.gz: oddmu.exe
+	cd man && make html
+	tar --create --file $@ --transform='s/^/oddmu\//' --exclude='*~' \
+	  $< *.md man/*.[157].{html,md} themes/
+
 %.tar.gz: %
-	tar czf $@ --transform='s/^$</oddmu/' --transform='s/^/oddmu\//' --exclude='*~' \
-	  $< Makefile *.socket *.service *.md man/Makefile man/*.1 man/*.5 man/*.7 themes/
+	tar --create --gzip --file $@ --transform='s/^$</oddmu/' --transform='s/^/oddmu\//' --exclude='*~' \
+	  $< *.html Makefile *.socket *.service *.md man/Makefile man/*.[157] themes/
+
+priv:
+	sudo setcap 'cap_net_bind_service=+ep' oddmu

README.md

@@ -1,28 +1,33 @@
-# Oddµ: A minimal wiki
+# Oddμ: A minimal wiki
 
-This program helps you run a minimal wiki, blog, digital garden, memex
-or Zettelkasten. There is no version history.
+Oddμ (or Oddmu) helps you run a minimal wiki, blog, digital garden,
+memex or Zettelkasten.
 
-It's well suited as a self-hosted, single-user web application, when
-there is no need for collaboration on the site itself. Links and email
-connect you to the rest of the net. The wiki can be public or private.
-Perhaps it just runs on your local machine, unreachable from the
-Internet.
-
-It's well suited as a secondary medium for a close-knit group:
-collaboration and conversation happens elsewhere, in chat, on social
-media. The wiki serves as the text repository that results from these
-discussions. As there are no logins and no version histories, it is
-not possible to undo vandalism and spam. Only allow people you trust
-write-access to the site.
-
-It's well suited as a simple static site generator. There are no
+Oddμ can be run as a static site generator, processing a directory
+with Markdown files, turning them into HTML files. HTML templates
+allow the customisation of headers, footers and styling. There are no
 plugins.
 
-When Oddµ runs as a web server, it serves all the Markdown files
+Oddμ is well suited as a self-hosted, single-user web application.
+Edit the pages from your phone or laptop, while you're on the move.
+
+If the site is public, use a regular web server as a proxy to make
+people log in before making changes. As there is no version history,
+it is not easy to undo vandalism and spam. Only grant write-access
+to people you trust.
+
+If the site is private, running on a local machine and unreachable
+from the Internet, no such precautions are necessary.
+
+This makes Oddμ well suited as a secondary medium for a close-knit group:
+collaboration and conversation happens elsewhere, in chat, on social
+media. The wiki serves as the text repository that results from these
+discussions.
+
+When Oddμ runs as a web server, it serves all the Markdown files
 (ending in `.md`) as web pages. These pages can be edited via the web.
 
-Oddmu adds the following extensions to Markdown: local links `[[like
+Oddμ adds the following extensions to Markdown: local links `[[like
 this]]`, hashtags `#Like_This` and fediverse account links like
 `@alex@alexschroeder.ch`.
 
@@ -31,93 +36,132 @@ If your pages don't provide their own title (`# title`), the file name
 necessary.
 
 Other files can be uploaded and images (ending in `.jpg`, `.jpeg`,
-`.png`, `.heic` or `webp`) can be resized when they are uploaded
-(resulting in `.jpg` or `.png` files).
+`.png`, `.heic` or `.webp`) can be resized when they are uploaded
+(resulting in `.jpg`, `.png` or `.webp` files).
 
 ## Documentation
 
-This project uses man(1) pages. They are generated from text files
+This project uses man pages. They are generated from text files
 using [scdoc](https://git.sr.ht/~sircmpwn/scdoc). These are the files
 available:
 
-[oddmu(1)](/oddmu.git/blob/main/man/oddmu.1.txt): This man page has a
-short introduction to Oddmu, its configuration via templates and
-environment variables, plus points to the other man pages.
+[oddmu(1)](https://alexschroeder.ch/view/oddmu/oddmu.1): This man page
+has a short introduction to Oddmu, its configuration via templates and
+environment variables, plus pointers to the other man pages.
 
-[oddmu(5)](/oddmu.git/blob/main/man/oddmu.5.txt): This man page talks
-about the Markdown and includes some examples for the non-standard
+[oddmu(5)](https://alexschroeder.ch/view/oddmu/oddmu.5): This man page
+talks about Markdown and includes some examples for the non-standard
 features such as table markup. It also talks about the Oddmu
 extensions to Markdown: wiki links, hashtags and fediverse account
 links. Local links must use percent encoding for page names so there
 is a section about percent encoding. The man page also explains how
 feeds are generated.
 
-[oddmu-releases(7)](/oddmu.git/blob/main/man/oddmu-releases.7.txt):
+[oddmu-releases(7)](https://alexschroeder.ch/view/oddmu/oddmu-releases.7):
 This man page lists all the Oddmu versions and their user-visible
 changes.
 
-[oddmu-releases(7)](/oddmu.git/blob/main/man/oddmu-releases.7.txt):
-This man page lists all the Oddmu versions and their user-visible
-changes.
+[oddmu-version(1)](https://alexschroeder.ch/view/oddmu/oddmu-version.1):
+This man page documents the "version" subcommand which you can use to
+get the installed Oddmu version.
 
-[oddmu-version(1)](/oddmu.git/blob/main/man/oddmu-version.1.txt): This
-man page documents the "version" subcommand which you can use to get
-installed Oddmu version.
+Working locally:
 
-[oddmu-list(1)](/oddmu.git/blob/main/man/oddmu-list.1.txt): This man
-page documents the "list" subcommand which you can use to get page
-names and page titles.
+[oddmu-links(1)](https://alexschroeder.ch/view/oddmu/oddmu-links.1):
+This man page documents the "links" subcommand which you can use to
+get the outgoing links for a page.
 
-[oddmu-search(1)](/oddmu.git/blob/main/man/oddmu-search.1.txt): This
-man page documents the "search" subcommand which you can use to build
-indexes – lists of page links. These are important for feeds.
+[oddmu-list(1)](https://alexschroeder.ch/view/oddmu/oddmu-list.1):
+This man page documents the "list" subcommand which you can use to get
+page names and page titles.
 
-[oddmu-search(7)](/oddmu.git/blob/main/man/oddmu-search.7.txt): This
-man page documents how search and scoring work.
+[oddmu-replace(1)](https://alexschroeder.ch/view/oddmu/oddmu-replace.1):
+This man page documents the "replace" subcommand to make mass changes
+to the files much like find(1), grep(1) and sed(1) or perl(1).
 
-[oddmu-filter(7)](/oddmu.git/blob/main/man/oddmu-filter.7.txt): This
-man page documents how to exclude subdirectories from search and
-archiving.
+[oddmu-search(1)](https://alexschroeder.ch/view/oddmu/oddmu-search.1):
+This man page documents the "search" subcommand which you can use to
+build indexes – lists of page links. These are important for feeds.
 
-[oddmu-replace(1)](/oddmu.git/blob/main/man/oddmu-replace.1.txt): This
-man page documents the "replace" subcommand to make mass changes to
-the files much like find(1), grep(1) and sed(1) or perl(1).
+[oddmu-search(7)](https://alexschroeder.ch/view/oddmu/oddmu-search.7):
+This man page documents how search and scoring work.
 
-[oddmu-missing(1)](/oddmu.git/blob/main/man/oddmu-missing.1.txt): This
-man page documents the "missing" subcommand to list local links that
-don't point to any existing pages or files.
+[oddmu-toc(1)](https://alexschroeder.ch/view/oddmu/oddmu-toc.1): This
+man page documents the "toc" subcommand which you can use to generate
+a table of contents linking to all the headings on the page.
 
-[oddmu-html(1)](/oddmu.git/blob/main/man/oddmu-html.1.txt): This man
-page documents the "html" subcommand to generate HTML from Markdown
-pages from the command line.
+Reporting:
 
-[oddmu-static(1)](/oddmu.git/blob/main/man/oddmu-static.1.txt): This
-man page documents the "static" subcommand to generate an entire
+[oddmu-missing(1)](https://alexschroeder.ch/view/oddmu/oddmu-missing.1):
+This man page documents the "missing" subcommand to list local links
+that don't point to any existing pages or files.
+
+[oddmu-hashtags(1)](https://alexschroeder.ch/view/oddmu/oddmu-hashtags.1):
+This man page documents the "hashtags" subcommand to count the
+hashtags used from the command line.
+
+Static site generator:
+
+[oddmu-html(1)](https://alexschroeder.ch/view/oddmu/oddmu-html.1):
+This man page documents the "html" subcommand to generate HTML from
+Markdown pages from the command line.
+
+[oddmu-feed(1)](https://alexschroeder.ch/view/oddmu/oddmu-feed.1):
+This man page documents the "feed" subcommand to generate a feed from
+Markdown pages from the command line.
+
+[oddmu-sitemap(1)](https://alexschroeder.ch/view/oddmu/oddmu-sitemap.1):
+This man page documents the "sitemap" subcommand to generate the
+static sitemap from the command line.
+
+[oddmu-static(1)](https://alexschroeder.ch/view/oddmu/oddmu-static.1):
+This man page documents the "static" subcommand to generate an entire
 static website from the command line, avoiding the need to run Oddmu
 as a server. Also great for archiving.
 
-[oddmu-notify(1)](/oddmu.git/blob/main/man/oddmu-notify.1.txt): This
-man page documents the "notify" subcommand to add links to hashtag
-pages, index and changes for a given page. This is useful when you
-edit the Markdown files locally.
+[oddmu-notify(1)](https://alexschroeder.ch/view/oddmu/oddmu-notify.1):
+This man page documents the "notify" subcommand to add links to
+hashtag pages, index and changes for a given page. This is useful when
+you edit the Markdown files locally.
 
-[oddmu-templates(5)](/oddmu.git/blob/main/man/oddmu-templates.5.txt):
+Configuration:
+
+[oddmu-templates(5)](https://alexschroeder.ch/view/oddmu/oddmu-templates.5):
 This man page documents how the templates can be changed (how they
 *must* be changed) and lists the attributes available for the various
 templates.
 
-[oddmu-apache(5)](/oddmu.git/blob/main/man/oddmu-apache.5.txt): This
-man page documents how to set up the Apache web server for various
-common tasks such as using logins to limit what visitors can edit.
+System administration:
 
-[oddmu-nginx(5)](/oddmu.git/blob/main/man/oddmu-nginx.5.txt): This man
-page documents how to set up the freenginx web server for various
-common tasks such as using logins to limit what visitors can edit.
+[oddmu-apache(5)](https://alexschroeder.ch/view/oddmu/oddmu-apache.5):
+This man page documents how to set up the Apache web server for
+various common tasks such as using logins to limit what visitors can
+edit.
 
-[oddmu.service(5)](/oddmu.git/blob/main/man/oddmu.service.5.txt): This
-man page documents how to setup a systemd unit and have it manage
+[oddmu-filter(7)](https://alexschroeder.ch/view/oddmu/oddmu-filter.7):
+This man page documents how to exclude subdirectories from search and
+archiving.
+
+[oddmu-nginx(5)](https://alexschroeder.ch/view/oddmu/oddmu-nginx.5):
+This man page documents how to set up the freenginx web server for
+various common tasks such as using logins to limit what visitors can
+edit.
+
+[oddmu.service(5)](https://alexschroeder.ch/view/oddmu/oddmu.service.5):
+This man page documents how to setup a systemd unit and have it manage
 Oddmu. “Great configurability brings great burdens.”
 
+[oddmu-webdav(5)](https://alexschroeder.ch/view/oddmu/oddmu-webdav.5):
+This man page documents how to set up the Apache web server so that
+the wiki can be accessed via Web-DAV.
+
+Leaving:
+
+[oddmu-export(1)](https://alexschroeder.ch/view/oddmu/oddmu-export.1):
+This man page documents how to export all the pages as one RSS feed so
+that you can import them all into a new platform that doesn't use
+Markdown files.
+
 ## Building
 
 To build the binary:
@@ -136,8 +180,6 @@ make docs
 The `Makefile` in the `man` directory has targets to create Markdown
 and HTML files.
 
-The HEIC library uses C code and prevents cross-compilation.
-
 As the repository changed URLs a few times (from GitHub, to
 self-hosted using `cgit` to self-hosted using `legit`), there is no
 way to install it using `go install`. You need to `git clone` the
@@ -178,9 +220,9 @@ into `$HOME/.local/share/man/`.
 make install
 ```
 
-To install it elsewhere, here's an example using [GNU
-Stow](https://www.gnu.org/software/stow/) to install it into
-`/usr/local/stow` in a way that allows you to uninstall it later:
+Here's an example using [GNU Stow](https://www.gnu.org/software/stow/)
+to install it into `/usr/local/stow` in a way that allows you to
+uninstall it later:
 
 ```sh
 sudo mkdir /usr/local/stow/oddmu
@@ -211,10 +253,13 @@ high-level introduction to the various source files.
   search results
 - `index.go` implements the index of all the hashtags
 - `languages.go` implements the language detection
+- `list.go` implements the file list page
 - `page.go` implements the page loading and saving
 - `parser.go` implements the Markdown parsing
+- `preview.go` implements the `/preview` handler
 - `score.go` implements the page scoring when showing search results
 - `search.go` implements the `/search` handler
+- `sitemap.go` implements the `/sitemap` handler
 - `snippets.go` implements the page summaries for search results
 - `templates.go` implements template loading and reloading
 - `tokenizer.go` implements the various tokenizers used
@@ -247,18 +292,10 @@ extensions can be added.
 
 ### Filenames and URL path
 
-One of the sad parts of the code is the distinction between path and
-filepath. On a Linux system, this doesn't matter. I suspect that it
-also doesn't matter on MacOS and Windows because the file systems
-handle forward slashes just fine. The code still tries to do the right
-thing. A path that is derived from a URL is a path with slashes.
-Before accessing a file, it has to be turned into a filepath using
-`filepath.FromSlashes` and in the rare case where the inverse happens,
-use `filepath.ToSlashes`. Any path received via the URL path uses
-slashes and needs to be converted to a filepath before passing it to
-any `os` function. Any path received within a `path/filepath.WalkFunc`
-is a filepath and needs to be converted to use slashes when used in
-HTML output.
+There are some simplifications made. The code doesn't consider the
+various encodings (UTF-8 NFC on the web vs UTF-8 NFD for HFS+, for
+example; it also doesn't check for characters in page names that are
+illegal filenames on the filesystem used).
 
 If you need to access the page name in code that is used from a
 template, you have to decode the path. See the code in `diff.go` for
@@ -279,6 +316,20 @@ to Oddmu, or you can require authentication for certain actions.
 Furthermore, you can do the same for directories, allowing you to use
 subdirectories as separate sites, each with their own editors.
 
+### Templates
+
+The `themes` folder has some ideas of how to tweak the HTML templates.
+
+### Permissions
+
+An unexplored idea would be to parse a config file that has usernames
+and passwords, groups usernames into roles, and assigns access to the
+various actions based on these roles. This would obviate the need for
+a web server acting as a reverse proxy.
+
+Then again, not having to care about roles and permissions has been a
+relief.
+
 ## Dependencies
 
 This section lists the non-standard libraries Oddmu uses and their
@@ -300,9 +351,12 @@ in turn can be used by browsers to get hyphenation right. Apache-2.0.
 is used to sniff the MIME type of files with unknown filename
 extensions. MIT.
 
-[github.com/bashdrew/goheif](https://github.com/bashdrew/goheif) is
-used to decode HEIC files (the new default file format for photos on
-iPhones). LGPL-3.0-only.
+[github.com/gen2brain/heic](https://github.com/gen2brain/heic) is used
+to decode HEIC files (the new default file format for photos on
+iPhones). MIT.
+
+[github.com/gen2brain/webp](https://github.com/gen2brain/webp) is used
+to encode and decode WebP files. MIT.
 
 [github.com/disintegration/imaging](https://github.com/disintegration/imaging)
 is used to resize images. MIT.

RELEASE

@@ -4,6 +4,8 @@ When preparing a new release
 1. Run tests
 
 2. Update man/oddmu-releases.7.txt
+   - add missing items
+   - change "(unreleased)"
 
 3. make docs
 
@@ -11,4 +13,10 @@ When preparing a new release
 
 5. Tag the release and push the tag to all remotes
 
-6. cd man && make upload
+6. cd man && make upload
+
+7. make dist
+
+8. create a new release at https://github.com/kensanata/oddmu/releases
+
+9. upload the four .tar.gz binaries to the GitHub release

accounts.go

@@ -2,13 +2,14 @@ package main
 
 import (
 	"encoding/json"
-	"github.com/gomarkdown/markdown/ast"
-	"github.com/gomarkdown/markdown/parser"
 	"io"
 	"log"
 	"net/http"
 	"os"
 	"sync"
+
+	"github.com/gomarkdown/markdown/ast"
+	"github.com/gomarkdown/markdown/parser"
 )
 
 // useWebfinger indicates whether Oddmu looks up the profile pages of fediverse accounts. To enable this, set the
@@ -38,7 +39,7 @@ func init() {
 
 // accountLink links a social media accountLink like @accountLink@domain to a profile page like https://domain/user/accountLink. Any
 // accountLink seen for the first time uses a best guess profile URI. It is also looked up using webfinger, in parallel. See
-// lookUpAccountUri. If the lookup succeeds, the best guess is replaced with the new URI so on subsequent requests, the
+// lookUpAccountURI. If the lookup succeeds, the best guess is replaced with the new URI so on subsequent requests, the
 // URI is correct.
 func accountLink(p *parser.Parser, data []byte, offset int) (int, ast.Node) {
 	data = data[offset:]
@@ -56,9 +57,8 @@ func accountLink(p *parser.Parser, data []byte, offset int) (int, ast.Node) {
 			if d != 0 {
 				// more than one @ is invalid
 				return 0, nil
-			} else {
-				d = i + 1 // skip @ of domain
 			}
+			d = i + 1 // skip @ of domain
 		}
 		i++
 	}
@@ -79,7 +79,7 @@ func accountLink(p *parser.Parser, data []byte, offset int) (int, ast.Node) {
 		log.Printf("Looking up %s\n", account)
 		uri = "https://" + string(domain) + "/users/" + string(user[1:])
 		accounts.uris[string(account)] = uri // prevent more lookings
-		go lookUpAccountUri(string(account), string(domain))
+		go lookUpAccountURI(string(account), string(domain))
 	}
 	link := &ast.Link{
 		AdditionalAttributes: []string{`class="account"`},
@@ -90,9 +90,9 @@ func accountLink(p *parser.Parser, data []byte, offset int) (int, ast.Node) {
 	return i, link
 }
 
-// lookUpAccountUri is called for accounts that haven't been seen before. It calls webfinger and parses the JSON. If
+// lookUpAccountURI is called for accounts that haven't been seen before. It calls webfinger and parses the JSON. If
 // possible, it extracts the link to the profile page and replaces the entry in accounts.
-func lookUpAccountUri(account, domain string) {
+func lookUpAccountURI(account, domain string) {
 	uri := "https://" + domain + "/.well-known/webfinger"
 	resp, err := http.Get(uri + "?resource=acct:" + account)
 	if err != nil {

accounts_test.go

@@ -1,8 +1,9 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestWebfingerParsing(t *testing.T) {

add.html

@@ -3,20 +3,23 @@
   <head>
     <meta charset="utf-8">
     <meta name="format-detection" content="telephone=no">
-    <meta name="viewport" content="width=device-width">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
     <title>Add to {{.Title}}</title>
     <style>
-html { max-width: 70ch; padding: 2ch; margin: auto; color: #111; background-color: #ffe; }
-form, textarea { width: 100%; }
+html { max-width: 70ch; padding: 1ch; height: calc(100% - 2ch); margin: auto }
+body { hyphens: auto; color: #111; background-color: #ffe; margin: 0; padding: 0; height: 100%; display: flex; flex-flow: column }
+form, textarea { box-sizing: border-box; width: 100%; font-size: inherit }
+#editor { flex: 1 1 auto; display: flex; flex-flow: column }
+textarea { flex: 1 1 auto }
     </style>
   </head>
   <body>
     <h1>Adding to {{.Title}}</h1>
-    <form action="/append/{{.Name}}" method="POST">
+    <form id="editor" action="/append/{{.Path}}" method="POST">
       <textarea name="body" rows="20" cols="80" placeholder="Text" lang="{{.Language}}" autofocus required></textarea>
       <p><label><input type="checkbox" name="notify" checked> Add link to <a href="/view/changes">the list of changes</a>.</label></p>
       <p><input type="submit" value="Add">
-        <a href="/view/{{.Name}}"><button type="button">Cancel</button></a></p>
+        <a href="/view/{{.Path}}"><button type="button">Cancel</button></a></p>
     </form>
   </body>
 </html>

add_append.go

@@ -48,15 +48,17 @@ func appendHandler(w http.ResponseWriter, r *http.Request, name string) {
 			return
 		}
 	}
-	http.Redirect(w, r, "/view/"+name, http.StatusFound)
+	http.Redirect(w, r, "/view/"+nameEscape(name), http.StatusFound)
 }
 
 func (p *Page) append(body []byte) {
 	// ensure an empty line at the end
-	if bytes.HasSuffix(p.Body, []byte("\n\n")) {
-	} else if bytes.HasSuffix(p.Body, []byte("\n")) {
+	switch {
+	case bytes.HasSuffix(p.Body, []byte("\n\n")):
+		// two newlines, nothing to add
+	case bytes.HasSuffix(p.Body, []byte("\n")):
 		p.Body = append(p.Body, '\n')
-	} else {
+	default:
 		p.Body = append(p.Body, '\n', '\n')
 	}
 	p.Body = append(p.Body, body...)

add_append_test.go

@@ -1,12 +1,14 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
+	"net/http"
 	"net/url"
 	"os"
 	"regexp"
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestEmptyLineAdd(t *testing.T) {
@@ -34,15 +36,15 @@ It's not `)}
 	data.Set("body", "barbecue")
 
 	assert.Regexp(t, regexp.MustCompile("a distant fire"),
-		assert.HTTPBody(makeHandler(viewHandler, false),
+		assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet),
 			"GET", "/view/testdata/add/fire", nil))
 	assert.NotRegexp(t, regexp.MustCompile("a distant fire"),
-		assert.HTTPBody(makeHandler(addHandler, true),
+		assert.HTTPBody(makeHandler(addHandler, true, http.MethodGet),
 			"GET", "/add/testdata/add/fire", nil))
-	HTTPRedirectTo(t, makeHandler(appendHandler, true),
+	HTTPRedirectTo(t, makeHandler(appendHandler, true, http.MethodPost),
 		"POST", "/append/testdata/add/fire", data, "/view/testdata/add/fire")
 	assert.Regexp(t, regexp.MustCompile(`not</p>\s*<p>barbecue`),
-		assert.HTTPBody(makeHandler(viewHandler, false),
+		assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet),
 			"GET", "/view/testdata/add/fire", nil))
 }
 
@@ -57,7 +59,7 @@ Blue and green and pebbles gray
 	data := url.Values{}
 	data.Set("body", "Stand in cold water")
 	data.Add("notify", "on")
-	HTTPRedirectTo(t, makeHandler(appendHandler, true),
+	HTTPRedirectTo(t, makeHandler(appendHandler, true, http.MethodPost),
 		"POST", "/append/testdata/append/"+today+"-water",
 		data, "/view/testdata/append/"+today+"-water")
 	// The changes.md file was created

archive.go

@@ -16,7 +16,7 @@ import (
 // are skipped. If the environment variable ODDMU_FILTER is a regular expression that matches the starting directory,
 // this is a "separate site"; if the regular expression does not match, this is the "main site" and page names must also
 // not match the regular expression.
-func archiveHandler(w http.ResponseWriter, r *http.Request, path string) {
+func archiveHandler(w http.ResponseWriter, r *http.Request, name string) {
 	filter := os.Getenv("ODDMU_FILTER")
 	re, err := regexp.Compile(filter)
 	if err != nil {
@@ -24,30 +24,30 @@ func archiveHandler(w http.ResponseWriter, r *http.Request, path string) {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
-	matches := re.MatchString(path)
-	dir := filepath.Dir(filepath.FromSlash(path))
+	matches := re.MatchString(name)
+	dir := filepath.Dir(filepath.FromSlash(name))
 	z := zip.NewWriter(w)
-	err = filepath.Walk(dir, func(path string, info fs.FileInfo, err error) error {
+	err = filepath.Walk(dir, func(fp string, info fs.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
 		if info.IsDir() {
-			if path != "." && strings.HasPrefix(filepath.Base(path), ".") {
+			if fp != "." && strings.HasPrefix(filepath.Base(fp), ".") {
 				return filepath.SkipDir
 			}
-		} else if !strings.HasPrefix(filepath.Base(path), ".") &&
-			(matches || !re.MatchString(path)) {
-			zf, err := z.Create(path)
+		} else if !strings.HasPrefix(filepath.Base(fp), ".") &&
+			(matches || !re.MatchString(filepath.ToSlash(fp))) {
+			zf, err := z.Create(fp)
 			if err != nil {
 				log.Println(err)
 				return err
 			}
-			file, err := os.Open(path)
+			f, err := os.Open(fp)
 			if err != nil {
 				log.Println(err)
 				return err
 			}
-			_, err = io.Copy(zf, file)
+			_, err = io.Copy(zf, f)
 			if err != nil {
 				log.Println(err)
 				return err

archive_test.go

@@ -2,10 +2,12 @@ package main
 
 import (
 	"archive/zip"
-	"github.com/stretchr/testify/assert"
+	"net/http"
 	"os"
 	"strings"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestArchive(t *testing.T) {
@@ -15,7 +17,7 @@ func TestArchive(t *testing.T) {
 	assert.NoError(t, os.WriteFile("testdata/archive/public/index.md", []byte("# Public\nChurch tower bells ringing\nA cold wind biting my ears\nWalk across the square"), 0644))
 	assert.NoError(t, os.WriteFile("testdata/archive/secret/index.md", []byte("# Secret\nMany years ago I danced\nSpending nights in clubs and bars\nIt is my secret"), 0644))
 	os.Setenv("ODDMU_FILTER", "^testdata/archive/secret/")
-	body := assert.HTTPBody(makeHandler(archiveHandler, true), "GET", "/archive/testdata/data.zip", nil)
+	body := assert.HTTPBody(makeHandler(archiveHandler, true, http.MethodGet), "GET", "/archive/testdata/data.zip", nil)
 	r, err := zip.NewReader(strings.NewReader(body), int64(len(body)))
 	assert.NoError(t, err, "Unzip")
 	names := []string{}

changes.go

@@ -20,10 +20,10 @@ func (p *Page) notify() error {
 	if p.Title == "" {
 		p.Title = p.Name
 	}
-	esc := nameEscape(path.Base(p.Name))
+	esc := nameEscape(p.Base())
 	link := "* [" + p.Title + "](" + esc + ")\n"
 	re := regexp.MustCompile(`(?m)^\* \[[^\]]+\]\(` + esc + `\)\n`)
-	dir := path.Dir(p.Name)
+	dir := p.Dir()
 	err := addLinkWithDate(path.Join(dir, "changes"), link, re)
 	if err != nil {
 		log.Printf("Updating changes in %s failed: %s", dir, err)
@@ -31,14 +31,14 @@ func (p *Page) notify() error {
 	}
 	if p.IsBlog() {
 		// Add to the index only if the blog post is for the current year
-		if strings.HasPrefix(path.Base(p.Name), time.Now().Format("2006")) {
+		if strings.HasPrefix(p.Base(), time.Now().Format("2006")) {
 			err := addLink(path.Join(dir, "index"), true, link, re)
 			if err != nil {
 				log.Printf("Updating index in %s failed: %s", dir, err)
 				return err
 			}
 		}
-		p.renderHtml() // to set hashtags
+		p.renderHTML() // to set hashtags
 		for _, hashtag := range p.Hashtags {
 			err := addLink(path.Join(dir, hashtag), false, link, re)
 			if err != nil {
@@ -98,12 +98,13 @@ func addLinkWithDate(name, link string, re *regexp.Regexp) error {
 		if loc[0] >= 14 {
 			re := regexp.MustCompile(`(?m)^## (\d\d\d\d-\d\d-\d\d)\n`)
 			m := re.Find(p.Body[loc[0]-14 : loc[0]])
-			if m == nil {
+			switch {
+			case m == nil:
 				// not a date: insert date, don't move insertion point
-			} else if string(p.Body[loc[0]-11:loc[0]-1]) == date {
+			case string(p.Body[loc[0]-11:loc[0]-1]) == date:
 				// if the date is our date, don't add it, don't move insertion point
 				addDate = false
-			} else {
+			default:
 				// if the date is not out date, move the insertion point
 				loc[0] -= 14
 			}
@@ -148,27 +149,61 @@ func addLink(name string, mandatory bool, link string, re *regexp.Regexp) error
 		if mandatory {
 			p = &Page{Name: name, Body: []byte(link)}
 			return p.save()
-		} else {
-			// Skip non-existing files: no error
-			return nil
 		}
+		// Skip non-existing files: no error
+		return nil
 	}
 	org := string(p.Body)
+	addLinkToPage(p, link, re)
+	// only save if something changed
+	if string(p.Body) != org {
+		return p.save()
+	}
+	return nil
+}
+
+func addLinkToPage(p *Page, link string, re *regexp.Regexp) {
 	// if a link exists, that's the place to insert the new link (in which case loc[0] and loc[1] differ)
 	loc := re.FindIndex(p.Body)
 	// if no link exists, find a good place to insert it
 	if loc == nil {
-		// locate the beginning of the list to insert the line
-		re = regexp.MustCompile(`(?m)^\* \[[^\]]+\]\([^\)]+\)\n`)
-		loc = re.FindIndex(p.Body)
-		if loc == nil {
-			// if no list was found, use the end of the page
-			m := len(p.Body)
-			loc = []int{m, m}
-		} else {
-			// if a list item was found, use just the beginning as insertion point
-			loc[1] = loc[0]
+		// locate the list items
+		re = regexp.MustCompile(`(?m)^\* \[[^\]]+\]\([^\)]+\)\n?`)
+		items := re.FindAllIndex(p.Body, -1)
+		first := false
+		pos := -1
+		// skip newer items
+		for i, it := range items {
+			// break if the current line is older (earlier in sort order)
+			stop := string(p.Body[it[0]:it[1]]) < link
+			// before the first match is always a good insert point
+			if i == 0 {
+				pos = it[0]
+				first = true
+			}
+			// if we're not stopping, then after the current item is a good insert point
+			if !stop {
+				pos = it[1]
+				first = false
+			} else {
+				break
+			}
 		}
+		// otherwise it's at the end of the list, after the last item
+		if pos == -1 && len(items) > 0 {
+			pos = items[len(items)-1][1]
+			first = false
+		}
+		// if no list was found, use the end of the page
+		if pos == -1 {
+			pos = len(p.Body)
+			first = true
+		}
+		if first {
+			p.Body, pos = ensureTwoNewlines(p.Body, pos)
+		}
+		// mimic a zero-width match at the insert point
+		loc = []int{pos, pos}
 	}
 	// start with new page content
 	r := []byte("")
@@ -179,9 +214,27 @@ func addLink(name string, mandatory bool, link string, re *regexp.Regexp) error
 	// append the rest
 	r = append(r, p.Body[loc[1]:]...)
 	p.Body = r
-	// only save if something changed
-	if string(p.Body) != org {
-		return p.save()
-	}
-	return nil
+}
+
+// ensureTwoNewlines makes sure that the two bytes before pos in buf are newlines. If the are not, newlines are inserted
+// and pos is increased. The new buf and pos is returned.
+func ensureTwoNewlines(buf []byte, pos int) ([]byte, int) {
+	var insert []byte
+	if pos >= 1 && buf[pos-1] != '\n' {
+		// add two newlines if buf doesn't end with a newline
+		insert = []byte("\n\n")
+	} else if pos >= 2 && buf[pos-2] != '\n' {
+		// add one newline if Body ends with just one newline
+		insert = []byte("\n")
+	}
+	if insert != nil {
+		r := []byte("")
+		r = append(r, buf[:pos]...)
+		r = append(r, insert...)
+		r = append(r, buf[pos:]...)
+		buf = r
+		pos += len(insert)
+
+	}
+	return buf, pos
 }

changes_test.go

@@ -1,14 +1,70 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"os"
+	"regexp"
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/assert"
 )
 
 // Note TestEditSaveChanges and TestAddAppendChanges.
 
+func TestAddLinkToPageWithNoList(t *testing.T) {
+	// no newlines
+	title := "# Test"
+	p := &Page{Body: []byte(title)}
+	re := regexp.MustCompile(`(?m)^\* \[[^\]]+\]\(2025-08-08\)\n`)
+	link := "* [2025-08-08](2025-08-08)\n"
+	addLinkToPage(p, link, re)
+	assert.Equal(t, title+"\n\n"+link, string(p.Body))
+}
+
+func TestAddLinkToPageWithOlderLink(t *testing.T) {
+	// one newline
+	title := "# Test\n"
+	old := "* [2025-08-08](2025-08-08)\n"
+	p := &Page{Body: []byte(title + old)}
+	re := regexp.MustCompile(`(?m)^\* \[[^\]]+\]\(2025-08-10\)\n`)
+	link := "* [2025-08-10](2025-08-10)\n"
+	addLinkToPage(p, link, re)
+	assert.Equal(t, title+"\n"+link+old, string(p.Body))
+}
+
+func TestAddLinkToPageBetweenToExistingLinks(t *testing.T) {
+	title := "# Test\n\n"
+	new := "* [2025-08-10](2025-08-10)\n"
+	old := "* [2025-08-08](2025-08-08)\n"
+	p := &Page{Body: []byte(title + new + old)}
+	re := regexp.MustCompile(`(?m)^\* \[[^\]]+\]\(2025-08-09\)\n`)
+	link := "* [2025-08-09](2025-08-09)\n"
+	addLinkToPage(p, link, re)
+	assert.Equal(t, title+new+link+old, string(p.Body))
+}
+
+func TestAddLinkToPageBetweenToExistingLinks2(t *testing.T) {
+	title := "# Test\n\n"
+	new := "* [2025-08-10](2025-08-10)\n* [2025-08-09](2025-08-09)\n"
+	old := "* [2025-08-07](2025-08-07)\n"
+	p := &Page{Body: []byte(title + new + old)}
+	re := regexp.MustCompile(`(?m)^\* \[[^\]]+\]\(2025-08-08\)\n`)
+	link := "* [2025-08-08](2025-08-08)\n"
+	addLinkToPage(p, link, re)
+	assert.Equal(t, title+new+link+old, string(p.Body))
+}
+
+func TestAddLinkToPageAtTheEnd(t *testing.T) {
+	title := "# Test\n\n"
+	new := "* [2025-08-10](2025-08-10)\n"
+	old := "* [2025-08-08](2025-08-08)\n"
+	p := &Page{Body: []byte(title + new + old)}
+	re := regexp.MustCompile(`(?m)^\* \[[^\]]+\]\(2025-08-07\)\n`)
+	link := "* [2025-08-07](2025-08-07)\n"
+	addLinkToPage(p, link, re)
+	assert.Equal(t, title+new+old+link, string(p.Body))
+}
+
 func TestChanges(t *testing.T) {
 	cleanup(t, "testdata/washing")
 	today := time.Now().Format(time.DateOnly)
@@ -48,7 +104,8 @@ Home away from home
 	assert.Contains(t, string(s), line)
 	s, err = os.ReadFile("testdata/changes/Haiku.md")
 	assert.NoError(t, err)
-	assert.Equal(t, intro+line, string(s))
+	// ensure an empty line when adding at the end of the page
+	assert.Equal(t, intro+"\n"+line, string(s))
 	assert.NoFileExists(t, "testdata/changes/Poetry.md")
 }
 
@@ -63,9 +120,9 @@ func TestChangesWithList(t *testing.T) {
 	p.notify()
 	s, err := os.ReadFile("testdata/changes/changes.md")
 	assert.NoError(t, err)
-	new_line := "* [testdata/changes/alex](alex)\n"
+	newLine := "* [testdata/changes/alex](alex)\n"
 	// new line was added at the beginning of the list
-	assert.Equal(t, intro+d+new_line+line, string(s))
+	assert.Equal(t, intro+d+newLine+line, string(s))
 }
 
 func TestChangesWithOldList(t *testing.T) {
@@ -80,9 +137,9 @@ func TestChangesWithOldList(t *testing.T) {
 	p.notify()
 	s, err := os.ReadFile("testdata/changes/changes.md")
 	assert.NoError(t, err)
-	new_line := "* [testdata/changes/alex](alex)\n"
+	newLine := "* [testdata/changes/alex](alex)\n"
 	// new line was added at the beginning of the list
-	assert.Equal(t, intro+d+new_line+"\n"+y+line, string(s))
+	assert.Equal(t, intro+d+newLine+"\n"+y+line, string(s))
 }
 
 func TestChangesWithOldDisappearingListAtTheEnd(t *testing.T) {
@@ -97,9 +154,9 @@ func TestChangesWithOldDisappearingListAtTheEnd(t *testing.T) {
 	p.notify()
 	s, err := os.ReadFile("testdata/changes/changes.md")
 	assert.NoError(t, err)
-	new_line := "* [testdata/changes/alex](alex)\n"
+	newLine := "* [testdata/changes/alex](alex)\n"
 	// new line was added at the beginning of the list, with the new date, and the old date disappeared
-	assert.Equal(t, intro+d+new_line, string(s))
+	assert.Equal(t, intro+d+newLine, string(s))
 }
 
 func TestChangesWithOldDisappearingListInTheMiddle(t *testing.T) {
@@ -116,9 +173,9 @@ func TestChangesWithOldDisappearingListInTheMiddle(t *testing.T) {
 	p.notify()
 	s, err := os.ReadFile("testdata/changes/changes.md")
 	assert.NoError(t, err)
-	new_line := "* [testdata/changes/alex](alex)\n"
+	newLine := "* [testdata/changes/alex](alex)\n"
 	// new line was added at the beginning of the list, with the new date, and the old date disappeared
-	assert.Equal(t, intro+d+new_line+"\n"+yy+other, string(s))
+	assert.Equal(t, intro+d+newLine+"\n"+yy+other, string(s))
 }
 
 func TestChangesWithListAtTheTop(t *testing.T) {
@@ -131,9 +188,9 @@ func TestChangesWithListAtTheTop(t *testing.T) {
 	p.notify()
 	s, err := os.ReadFile("testdata/changes/changes.md")
 	assert.NoError(t, err)
-	new_line := "* [testdata/changes/alex](alex)\n"
+	newLine := "* [testdata/changes/alex](alex)\n"
 	// new line was added at the top, no error due to missing introduction
-	assert.Equal(t, d+new_line+line, string(s))
+	assert.Equal(t, d+newLine+line, string(s))
 }
 
 func TestChangesWithNoList(t *testing.T) {
@@ -146,9 +203,9 @@ func TestChangesWithNoList(t *testing.T) {
 	p.notify()
 	s, err := os.ReadFile("testdata/changes/changes.md")
 	assert.NoError(t, err)
-	new_line := "* [testdata/changes/alex](alex)\n"
+	newLine := "* [testdata/changes/alex](alex)\n"
 	// into is still there and a new list was started
-	assert.Equal(t, intro+"\n\n"+d+new_line, string(s))
+	assert.Equal(t, intro+"\n\n"+d+newLine, string(s))
 }
 
 func TestChangesWithUpdate(t *testing.T) {
@@ -163,9 +220,9 @@ func TestChangesWithUpdate(t *testing.T) {
 	p.notify()
 	s, err := os.ReadFile("testdata/changes/changes.md")
 	assert.NoError(t, err)
-	new_line := "* [testdata/changes/alex](alex)\n"
+	newLine := "* [testdata/changes/alex](alex)\n"
 	// the change was already listed, but now it moved up and has a new title
-	assert.Equal(t, intro+d+new_line+other, string(s))
+	assert.Equal(t, intro+d+newLine+other, string(s))
 }
 
 func TestChangesWithNoChangeToTheOrder(t *testing.T) {
@@ -180,9 +237,9 @@ func TestChangesWithNoChangeToTheOrder(t *testing.T) {
 	p.notify()
 	s, err := os.ReadFile("testdata/changes/changes.md")
 	assert.NoError(t, err)
-	new_line := "* [testdata/changes/alex](alex)\n"
+	newLine := "* [testdata/changes/alex](alex)\n"
 	// the change was already listed at the top, so just use the new title
-	assert.Equal(t, intro+d+new_line+other, string(s))
+	assert.Equal(t, intro+d+newLine+other, string(s))
 	// since the file has changed, a backup was necessary
 	assert.FileExists(t, "testdata/changes/changes.md~")
 }

diff.go

@@ -2,14 +2,14 @@ package main
 
 import (
 	"bytes"
-	"github.com/sergi/go-diff/diffmatchpatch"
 	"html"
 	"html/template"
 	"net/http"
-	"net/url"
 	"os"
 	"path/filepath"
 	"strings"
+
+	"github.com/sergi/go-diff/diffmatchpatch"
 )
 
 func diffHandler(w http.ResponseWriter, r *http.Request, name string) {
@@ -19,17 +19,13 @@ func diffHandler(w http.ResponseWriter, r *http.Request, name string) {
 		return
 	}
 	p.handleTitle(true)
-	p.renderHtml()
+	p.renderHTML()
 	renderTemplate(w, p.Dir(), "diff", p)
 }
 
-// Diff computes the diff for a page. At this point, renderHtml has already been called so the Name is escaped.
+// Diff computes the diff for a page. At this point, renderHTML has already been called so the Name is escaped.
 func (p *Page) Diff() template.HTML {
-	path, err := url.PathUnescape(p.Name)
-	if err != nil {
-		return template.HTML("Cannot unescape " + p.Name)
-	}
-	fp := filepath.FromSlash(path)
+	fp := filepath.FromSlash(p.Name)
 	a := fp + ".md~"
 	t1, err := os.ReadFile(a)
 	if err != nil {
@@ -46,23 +42,23 @@ func (p *Page) Diff() template.HTML {
 }
 
 func diff2html(diffs []diffmatchpatch.Diff) string {
-	var buff bytes.Buffer
+	var buf bytes.Buffer
 	for _, item := range diffs {
 		text := strings.ReplaceAll(html.EscapeString(item.Text), "\n", "<br>")
 		switch item.Type {
 		case diffmatchpatch.DiffInsert:
-			_, _ = buff.WriteString("<ins>")
-			_, _ = buff.WriteString(text)
-			_, _ = buff.WriteString("</ins>")
+			_, _ = buf.WriteString("<ins>")
+			_, _ = buf.WriteString(text)
+			_, _ = buf.WriteString("</ins>")
 		case diffmatchpatch.DiffDelete:
-			_, _ = buff.WriteString("<del>")
-			_, _ = buff.WriteString(text)
-			_, _ = buff.WriteString("</del>")
+			_, _ = buf.WriteString("<del>")
+			_, _ = buf.WriteString(text)
+			_, _ = buf.WriteString("</del>")
 		case diffmatchpatch.DiffEqual:
-			_, _ = buff.WriteString("<span>")
-			_, _ = buff.WriteString(text)
-			_, _ = buff.WriteString("</span>")
+			_, _ = buf.WriteString("<span>")
+			_, _ = buf.WriteString(text)
+			_, _ = buf.WriteString("</span>")
 		}
 	}
-	return buff.String()
+	return buf.String()
 }

diff.html

@@ -3,11 +3,11 @@
   <head>
     <meta charset="utf-8">
     <meta name="format-detection" content="telephone=no">
-    <meta name="viewport" content="width=device-width">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
     <title>{{.Title}}</title>
     <style>
-html { max-width: 70ch; padding: 1ch; margin: auto; color: #111; background-color: #ffe; }
-body { hyphens: auto; }
+html { max-width: 70ch; padding: 1ch; margin: auto; color: #111; background-color: #ffe }
+body { hyphens: auto }
 del  { background-color: #fab }
 ins  { background-color: #af8 }
 pre { white-space: normal; background-color: white; border: 1px solid #eee; padding: 1ch }
@@ -15,11 +15,11 @@ pre { white-space: normal; background-color: white; border: 1px solid #eee; padd
   </head>
   <body>
     <header>
-      <a href="/view/{{.Name}}">Back</a>
+      <a href="/view/{{.Path}}">Back</a>
     </header>
     <main id="main">
       <h1>{{.Title}}</h1>
-      <p>This is the diff between <a href="/view/{{.Name}}.md~">the backup</a> and <a href="/view/{{.Name}}.md">the current copy</a>.</p>
+      <p>This is the diff between <a href="/view/{{.Path}}.md~">the backup</a> and <a href="/view/{{.Path}}.md">the current copy</a>.</p>
       <pre>
 {{.Diff}}
       </pre>

diff_test.go

@@ -1,10 +1,12 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
+	"net/http"
 	"os"
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestDiff(t *testing.T) {
@@ -24,7 +26,7 @@ Oh so fresh, so warm.`
 	p.save()
 	p.Body = []byte(r)
 	p.save()
-	body := assert.HTTPBody(makeHandler(diffHandler, true),
+	body := assert.HTTPBody(makeHandler(diffHandler, true, http.MethodGet),
 		"GET", "/diff/testdata/diff/bread", nil)
 	assert.Contains(t, body, `<del>breathe</del>`)
 	assert.Contains(t, body, `<ins>whisper</ins>`)
@@ -47,7 +49,7 @@ Mispronouncing words`
 	p.save()
 	p.Body = []byte(r)
 	p.save()
-	body := assert.HTTPBody(makeHandler(diffHandler, true),
+	body := assert.HTTPBody(makeHandler(diffHandler, true, http.MethodGet),
 		"GET", "/diff/testdata/diff/coup%20de%20grace", nil)
 	assert.Contains(t, body, `<del>s</del>`)
 	assert.Contains(t, body, `<ins>ce</ins>`)
@@ -70,6 +72,7 @@ I hate the machine!`
 I shiver at home
 the monitor glares and moans
 my grey heart grows cold`
+	// create s and overwrite it with r
 	p := &Page{Name: "testdata/backup/cold", Body: []byte(s)}
 	p.save()
 	p = &Page{Name: "testdata/backup/cold", Body: []byte(r)}
@@ -78,19 +81,29 @@ my grey heart grows cold`
 	// diff from s to r:
 	assert.Contains(t, body, `<del>fear or cold, who knows?</del>`)
 	assert.Contains(t, body, `<ins>I hate the machine!</ins>`)
+	// save u
 	p = &Page{Name: "testdata/backup/cold", Body: []byte(u)}
 	p.save()
 	body = string(p.Diff())
-	// diff from s to u since r was not 60 min or older
+	// diff from s to u since r was not 60 min or older and so the backup is kept
 	assert.Contains(t, body, `<del>fear or cold, who knows?</del>`)
 	assert.Contains(t, body, `<ins>my grey heart grows cold</ins>`)
 	// set timestamp 2h in the past
 	ts := time.Now().Add(-2 * time.Hour)
 	assert.NoError(t, os.Chtimes("testdata/backup/cold.md~", ts, ts))
+	assert.NoError(t, os.Chtimes("testdata/backup/cold.md", ts, ts))
+	// save r
 	p = &Page{Name: "testdata/backup/cold", Body: []byte(r)}
 	p.save()
 	body = string(p.Diff())
-	// diff from u to r:
+	// diff from u to r since enough time has passed and the old backup is discarded
 	assert.Contains(t, body, `<del>my grey heart grows cold</del>`)
 	assert.Contains(t, body, `<ins>I hate the machine!</ins>`)
+	// save s
+	p = &Page{Name: "testdata/backup/cold", Body: []byte(s)}
+	p.save()
+	body = string(p.Diff())
+	// diff from u to s since this is still "the same" editing window
+	assert.Contains(t, body, `<del>my grey heart grows cold</del>`)
+	assert.Contains(t, body, `<ins>fear or cold, who knows?</ins>`)
 }

edit.html

@@ -3,22 +3,27 @@
   <head>
     <meta charset="utf-8">
     <meta name="format-detection" content="telephone=no">
-    <meta name="viewport" content="width=device-width">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
+    <base href="/view/{{.Dir}}">
     <title>Editing {{.Title}}</title>
     <style>
-html { max-width: 70ch; padding: 2ch; margin: auto; color: #111; background-color: #ffe; }
-form, textarea { width: 100%; }
+html { max-width: 70ch; padding: 1ch; height: calc(100% - 2ch); margin: auto }
+body { hyphens: auto; color: #111; background-color: #ffe; margin: 0; padding: 0; height: 100%; display: flex; flex-flow: column }
+form, textarea { box-sizing: border-box; width: 100%; font-size: inherit }
+#editor { flex: 1 1 auto; display: flex; flex-flow: column }
+textarea { flex: 1 1 auto }
     </style>
   </head>
   <body>
     <h1>Editing {{.Title}}</h1>
-    <form action="/save/{{.Name}}" method="POST">
+    <form id="editor" action="/save/{{.Path}}" method="POST">
       <textarea name="body" rows="20" cols="80" placeholder="# Title
 
 Text" lang="{{.Language}}" autofocus>{{printf "%s" .Body}}</textarea>
       <p><label><input type="checkbox" name="notify" checked> Add link to <a href="changes">the list of changes</a>.</label></p>
       <p><input type="submit" value="Save">
-        <a href="/view/{{.Name}}"><button type="button">Cancel</button></a></p>
+        <button formaction="/preview/{{.Path}}" type="submit">Preview</button>
+        <a href="/view/{{.Path}}"><button type="button">Cancel</button></a></p>
     </form>
   </body>
 </html>

edit_save.go

@@ -41,5 +41,5 @@ func saveHandler(w http.ResponseWriter, r *http.Request, name string) {
 			return
 		}
 	}
-	http.Redirect(w, r, "/view/"+name, http.StatusFound)
+	http.Redirect(w, r, "/view/"+nameEscape(name), http.StatusFound)
 }

edit_save_test.go

@@ -1,12 +1,13 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"net/http"
 	"net/url"
 	"os"
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestEditSave(t *testing.T) {
@@ -16,24 +17,24 @@ func TestEditSave(t *testing.T) {
 	data.Set("body", "Hallo!")
 
 	// View of the non-existing page redirects to the edit page
-	HTTPRedirectTo(t, makeHandler(viewHandler, false),
+	HTTPRedirectTo(t, makeHandler(viewHandler, false, http.MethodGet),
 		"GET", "/view/testdata/save/alex", nil, "/edit/testdata/save/alex")
 	// Edit page can be fetched
-	assert.HTTPStatusCode(t, makeHandler(editHandler, true),
+	assert.HTTPStatusCode(t, makeHandler(editHandler, true, http.MethodGet),
 		"GET", "/edit/testdata/save/alex", nil, 200)
 	// Posting to the save URL saves a page
-	HTTPRedirectTo(t, makeHandler(saveHandler, true),
+	HTTPRedirectTo(t, makeHandler(saveHandler, true, http.MethodPost),
 		"POST", "/save/testdata/save/alex", data, "/view/testdata/save/alex")
 	// Page now contains the text
-	assert.Contains(t, assert.HTTPBody(makeHandler(viewHandler, false),
+	assert.Contains(t, assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet),
 		"GET", "/view/testdata/save/alex", nil),
 		"Hallo!")
 	// Delete the page and you're sent to the empty page
 	data.Set("body", "")
-	HTTPRedirectTo(t, makeHandler(saveHandler, true),
+	HTTPRedirectTo(t, makeHandler(saveHandler, true, http.MethodPost),
 		"POST", "/save/testdata/save/alex", data, "/view/testdata/save/alex")
 	// Viewing the non-existing page redirects to the edit page (like in the beginning)
-	HTTPRedirectTo(t, makeHandler(viewHandler, false),
+	HTTPRedirectTo(t, makeHandler(viewHandler, false, http.MethodGet),
 		"GET", "/view/testdata/save/alex", nil, "/edit/testdata/save/alex")
 }
 
@@ -44,7 +45,7 @@ func TestEditSaveChanges(t *testing.T) {
 	data.Add("notify", "on")
 	today := time.Now().Format("2006-01-02")
 	// Posting to the save URL saves a page
-	HTTPRedirectTo(t, makeHandler(saveHandler, true),
+	HTTPRedirectTo(t, makeHandler(saveHandler, true, http.MethodPost),
 		"POST", "/save/testdata/notification/"+today,
 		data, "/view/testdata/notification/"+today)
 	// The changes.md file was created
@@ -73,15 +74,15 @@ func TestEditId(t *testing.T) {
 	cleanup(t, "testdata/id")
 	data := url.Values{}
 	data.Set("id", "testdata/id/alex")
-	assert.HTTPStatusCode(t, makeHandler(editHandler, true),
+	assert.HTTPStatusCode(t, makeHandler(editHandler, true, http.MethodGet),
 		"GET", "/edit/", data, http.StatusBadRequest,
 		"No slashes in id")
 	data.Set("id", ".alex")
-	assert.HTTPStatusCode(t, makeHandler(editHandler, true),
+	assert.HTTPStatusCode(t, makeHandler(editHandler, true, http.MethodGet),
 		"GET", "/edit/", data, http.StatusForbidden,
 		"No hidden files")
 	data.Set("id", "alex")
-	assert.Contains(t, assert.HTTPBody(makeHandler(editHandler, true),
+	assert.Contains(t, assert.HTTPBody(makeHandler(editHandler, true, http.MethodGet),
 		"GET", "/edit/testdata/id/", data),
 		"Editing testdata/id/alex")
 }

export_cmd.go

@@ -0,0 +1,109 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	htmlTemplate "html/template"
+	"io"
+	"os"
+	"strings"
+	textTemplate "text/template"
+	"time"
+
+	"github.com/google/subcommands"
+)
+
+type exportCmd struct {
+	templateName string
+}
+
+func (cmd *exportCmd) SetFlags(f *flag.FlagSet) {
+	f.StringVar(&cmd.templateName, "template", "feed.html", "template filename")
+}
+
+func (*exportCmd) Name() string     { return "export" }
+func (*exportCmd) Synopsis() string { return "export the whole site as one big RSS feed" }
+func (*exportCmd) Usage() string {
+	return `export:
+  Export the entire site as one big RSS feed. This may allow you to
+  import the whole site into a different content management system.
+  The feed contains every page, in HTML format, so the Markdown files
+  are part of the feed, but none of the other files.
+
+  The RSS feed is printed to stdout so you probably want to redirect
+  it:
+
+    oddmu export > /tmp/export.rss
+`
+}
+
+func (cmd *exportCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	index.load()
+	return exportCli(os.Stdout, cmd.templateName, &index)
+}
+
+// exportCli runs the export command on the command line. In order to make testing easier, it takes a Writer and an
+// indexStore. The Writer is important so that test code can provide a buffer instead of os.Stdout; the indexStore is
+// important so that test code can ensure no other test running in parallel can interfere with the list of known pages
+// (by adding or deleting pages).
+func exportCli(w io.Writer, templateName string, idx *indexStore) subcommands.ExitStatus {
+	loadLanguages()
+	feed := new(Feed)
+	items := []Item{}
+	// feed.Name remains unset
+	feed.Date = time.Now().Format(time.RFC3339)
+	for name, title := range idx.titles {
+		if name == "index" {
+			feed.Title = title
+		}
+		p, err := loadPage(name)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Loading %s: %s\n", name, err)
+			return subcommands.ExitFailure
+		}
+		p.handleTitle(false)
+		p.renderHTML()
+		fi, err := os.Stat(name + ".md")
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Stat %s: %s\n", name, err)
+			return subcommands.ExitFailure
+		}
+		it := Item{Date: fi.ModTime().Format(time.RFC3339)}
+		it.Title = p.Title
+		it.Name = p.Name
+		it.Body = p.Body
+		it.HTML = htmlTemplate.HTML(htmlTemplate.HTMLEscaper(p.HTML))
+		it.Hashtags = p.Hashtags
+		items = append(items, it)
+	}
+	feed.Items = items
+	// No effort is made to work with the templates var.
+	if strings.HasSuffix(templateName, ".html") ||
+		strings.HasSuffix(templateName, ".xml") ||
+		strings.HasSuffix(templateName, ".rss") {
+		w.Write([]byte("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"))
+		t, err := htmlTemplate.ParseFiles(templateName)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Parsing %s: %s\n", templateName, err)
+			return subcommands.ExitFailure
+		}
+		err = t.Execute(w, feed)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Writing feed: %s\n", err)
+			return subcommands.ExitFailure
+		}
+	} else {
+		t, err := textTemplate.ParseFiles(templateName)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Parsing %s: %s\n", templateName, err)
+			return subcommands.ExitFailure
+		}
+		err = t.Execute(w, feed)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Writing feed: %s\n", err)
+			return subcommands.ExitFailure
+		}
+	}
+	return subcommands.ExitSuccess
+}

export_cmd_test.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"bytes"
+	"os"
+	"regexp"
+	"testing"
+
+	"github.com/google/subcommands"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestExportCmd(t *testing.T) {
+	b := new(bytes.Buffer)
+	s := exportCli(b, "feed.html", minimalIndex(t))
+	assert.Equal(t, subcommands.ExitSuccess, s)
+	assert.Contains(t, b.String(), "<title>Oddμ: A minimal wiki</title>")
+	assert.Contains(t, b.String(), "<title>Welcome to Oddμ</title>")
+}
+
+func TestExportCmdLanguage(t *testing.T) {
+	os.Setenv("ODDMU_LANGUAGES", "de,en")
+	loadLanguages()
+	p := Page{Body: []byte("This is an English text. All right then!")}
+	it := Item{Page: p}
+	assert.Equal(t, "en", it.Language())
+}
+
+func TestExportCmdJsonFeed(t *testing.T) {
+	cleanup(t, "testdata/json")
+	os.Mkdir("testdata/json", 0755)
+	assert.NoError(t, os.WriteFile("testdata/json/template.json", []byte(`{
+  "version": "https://jsonfeed.org/version/1.1",
+  "title": "{{.Title}}",
+  "home_page_url": "https://alexschroeder.ch",
+  "others": [],
+  "items": [{{range .Items}}
+    {
+      "id": "{{.Name}}",
+      "url": "https://alexschroeder.ch/view/{{.Name}}",
+      "title": "{{.Title}}",
+      "language": "{{.Language}}"
+      "date_modified": "{{.Date}}",
+      "content_html": "{{.HTML}}",
+      "tags": [{{range .Hashtags}}"{{.}}",{{end}}""],
+    },{{end}}
+    {}
+  ]
+}
+`), 0644))
+	b := new(bytes.Buffer)
+	s := exportCli(b, "testdata/json/template.json", minimalIndex(t))
+	assert.Equal(t, subcommands.ExitSuccess, s)
+	assert.Contains(t, b.String(), `"title": "Oddμ: A minimal wiki"`)
+	assert.Regexp(t, regexp.MustCompile("&lt;h1.*&gt;Welcome to Oddμ&lt;/h1&gt;"), b.String()) // skip id
+}

feed.go

@@ -2,13 +2,22 @@ package main
 
 import (
 	"bytes"
-	"github.com/gomarkdown/markdown"
-	"github.com/gomarkdown/markdown/ast"
 	"html/template"
 	"os"
 	"path"
 	"path/filepath"
+	"strconv"
 	"time"
+
+	"github.com/gomarkdown/markdown"
+	"github.com/gomarkdown/markdown/ast"
+)
+
+type dateSource int
+
+const (
+	ModTime dateSource = iota
+	URL
 )
 
 // Item is a Page plus a Date.
@@ -34,19 +43,46 @@ type Feed struct {
 	// Items are based on the pages linked in list items starting with an asterisk ("*"). Links in
 	// list items starting with a minus ("-") are ignored!
 	Items []Item
+
+	// From is where the item number where the feed starts. It defaults to 0. Prev and From are the item numbers of
+	// The previous and the next page of the feed. N is the number of items per page. Next goes further into the
+	// past.
+	Prev, Next, From, N int
+
+	// When paging through the index or year pages, link to the next or previous years. NextYear goes further into
+	// the past (is smaller).
+	PrevYear, NextYear int
+
+	// Complete is set when there is no pagination.
+	Complete bool
 }
 
 // feed returns a RSS 2.0 feed for any page. The feed items it contains are the pages linked from in list items starting
-// with an asterisk ("*").
-func feed(p *Page, ti time.Time) *Feed {
+// with an asterisk ("*"). The feed starts from a certain item and contains n items. If n is 0, the feed is complete
+// (unpaginated). The
+func feed(p *Page, ti time.Time, from, n int, source dateSource) *Feed {
 	feed := new(Feed)
 	feed.Name = p.Name
 	feed.Title = p.Title
 	feed.Date = ti.Format(time.RFC1123Z)
+	feed.From = from
+	feed.N = n
+	if n == 0 {
+		feed.Complete = true
+	} else if from > n {
+		feed.Prev = from - n
+	} else {
+		year, err := p.BlogYear()
+		if err == nil && p.ArchiveExists(year+1) {
+			feed.PrevYear = year + 1
+		}
+	}
+	to := from + n
 	parser, _ := wikiParser()
 	doc := markdown.Parse(p.Body, parser)
 	items := make([]Item, 0)
 	inListItem := false
+	i := 0
 	ast.WalkFunc(doc, func(node ast.Node, entering bool) ast.WalkStatus {
 		// set the flag if we're in a list item
 		listItem, ok := node.(*ast.ListItem)
@@ -58,33 +94,81 @@ func feed(p *Page, ti time.Time) *Feed {
 		if !inListItem || !entering {
 			return ast.GoToNext
 		}
-		// if we're in a link and it's local
+		// if we're in a link and it's not local
 		link, ok := node.(*ast.Link)
 		if !ok || bytes.Contains(link.Destination, []byte("//")) {
 			return ast.GoToNext
 		}
-		name := path.Join(path.Dir(p.Name), string(link.Destination))
-		fi, err := os.Stat(filepath.FromSlash(name) + ".md")
-		if err != nil {
+		// if we're too early or too late
+		i++
+		if i <= from {
 			return ast.GoToNext
 		}
+		if n > 0 && i > to {
+			// set if it's likely that more items exist
+			feed.Next = to
+			return ast.Terminate
+		}
+		// i counts links, not actual existing pages
+		name := path.Join(p.Dir(), string(link.Destination))
 		p2, err := loadPage(name)
 		if err != nil {
 			return ast.GoToNext
 		}
 		p2.handleTitle(false)
-		p2.renderHtml()
-		it := Item{Date: fi.ModTime().Format(time.RFC1123Z)}
+		p2.renderHTML()
+		date, err := p2.Date(source)
+		if err != nil {
+			return ast.GoToNext
+		}
+		it := Item{Date: date.Format(time.RFC1123Z)}
 		it.Title = p2.Title
 		it.Name = p2.Name
-		it.Html = template.HTML(template.HTMLEscaper(p2.Html))
+		it.HTML = template.HTML(template.HTMLEscaper(p2.HTML))
 		it.Hashtags = p2.Hashtags
 		items = append(items, it)
-		if len(items) >= 10 {
-			return ast.Terminate
-		}
 		return ast.GoToNext
 	})
+	// If there are no more "next" links but there is a next page, add it.
+	if feed.Next == 0 {
+		year, err := p.BlogYear()
+		if err == nil && p.ArchiveExists(year-1) {
+			feed.NextYear = year - 1
+		}
+	}
 	feed.Items = items
 	return feed
 }
+
+// Date returns the page's last modification date if the data source is ModTime. If the data source is URL, then the
+// first 10 characters are parsed as an ISO date string and the time returned is for that date, 0:00, UTC.
+func (p *Page) Date(source dateSource) (time.Time, error) {
+	if source == URL && p.IsBlog() {
+		name := path.Base(p.Name)
+		return time.Parse(time.DateOnly, name[0:10])
+	}
+	return p.ModTime()
+}
+
+// BLogYear returns the current year if the page name is "index". If the page name is a number such as "2026" then
+// this is parsed as an integer and returned.
+func (p *Page) BlogYear() (int, error) {
+	name := path.Base(p.Name)
+	if name == "index" {
+		return time.Now().Year(), nil
+	}
+	ui, err := strconv.ParseUint(name, 10, 16)
+	if err == nil {
+		return int(ui), nil
+	}
+	return 0, err
+}
+
+// ArchiveExists returns true if a page exists in the same directory as the current one with a page name matching
+// the year given.
+func (p *Page) ArchiveExists(year int) bool {
+	name := path.Join(p.Dir(), strconv.Itoa(year))
+	fp := filepath.FromSlash(name) + ".md"
+	_, err := os.Stat(fp)
+	return err == nil
+}

feed.html

@@ -1,11 +1,17 @@
-<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0">
+<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"
+     xmlns:fh="http://purl.org/syndication/history/1.0">
   <channel>
     <docs>http://blogs.law.harvard.edu/tech/rss</docs>
     <title>{{.Title}}</title>
     <link>https://example.org/</link>
     <managingEditor>you@example.org (Your Name)</managingEditor>
     <webMaster>you@example.org (Your Name)</webMaster>
-    <atom:link href="https://example.org/view/{{.Name}}.rss" rel="self" type="application/rss+xml"/>
+    <atom:link href="https://example.org/view/{{.Path}}.rss" rel="self" type="application/rss+xml"/>{{if .From}}
+    <atom:link href="https://example.org/view/{{.Path}}.rss?from={{.Prev}}&amp;n={{.N}}" rel="previous" type="application/rss+xml"/>{{end}}{{if .PrevYear}}
+    <atom:link href="https://example.org/view/{{.Dir}}{{.PrevYear}}.rss?n={{.N}}" rel="previous" type="application/rss+xml"/>{{end}}{{if .Next}}
+    <atom:link href="https://example.org/view/{{.Path}}.rss?from={{.Next}}&amp;n={{.N}}" rel="next" type="application/rss+xml"/>{{end}}{{if .NextYear}}
+    <atom:link href="https://example.org/view/{{.Dir}}{{.NextYear}}.rss?n={{.N}}" rel="next" type="application/rss+xml"/>{{end}}{{if .Complete}}
+    <fh:complete/>{{end}}
     <description>This is the digital garden of Your Name.</description>
     <image>
       <url>https://example.org/view/logo.jpg</url>
@@ -15,9 +21,9 @@
     {{range .Items}}
     <item>
       <title>{{.Title}}</title>
-      <link>https://example.org/view/{{.Name}}</link>
-      <guid>https://example.org/view/{{.Name}}</guid>
-      <description>{{.Html}}</description>
+      <link>https://example.org/view/{{.Path}}</link>
+      <guid>https://example.org/view/{{.Path}}</guid>
+      <description>{{.HTML}}</description>
       <pubDate>{{.Date}}</pubDate>
       {{range .Hashtags}}
       <category>{{.}}</category>

feed_cmd.go

@@ -0,0 +1,90 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/google/subcommands"
+)
+
+type feedCmd struct {
+}
+
+func (*feedCmd) Name() string     { return "feed" }
+func (*feedCmd) Synopsis() string { return "render a page as feed" }
+func (*feedCmd) Usage() string {
+	return `feed <page name> ...:
+  Render one or more pages as a single feed.
+  Use a single - to read Markdown from stdin.
+`
+}
+
+func (cmd *feedCmd) SetFlags(f *flag.FlagSet) {
+}
+
+func (cmd *feedCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	if len(f.Args()) == 0 {
+		fmt.Fprint(os.Stderr, cmd.Usage())
+		return subcommands.ExitFailure
+	}
+	return feedCli(os.Stdout, f.Args())
+}
+
+func feedCli(w io.Writer, args []string) subcommands.ExitStatus {
+	if len(args) == 1 && args[0] == "-" {
+		body, err := io.ReadAll(os.Stdin)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Cannot read from stdin: %s\n", err)
+			return subcommands.ExitFailure
+		}
+		p := &Page{Name: "stdin", Body: body}
+		return p.printFeed(w, time.Now())
+	}
+	for _, name := range args {
+		if !strings.HasSuffix(name, ".md") {
+			fmt.Fprintf(os.Stderr, "%s does not end in '.md'\n", name)
+			return subcommands.ExitFailure
+		}
+		name = name[0 : len(name)-3]
+		p, err := loadPage(name)
+		p.handleTitle(false)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Cannot load %s: %s\n", name, err)
+			return subcommands.ExitFailure
+		}
+		ti, _ := p.ModTime()
+		status := p.printFeed(w, ti)
+		if status != subcommands.ExitSuccess {
+			return status
+		}
+	}
+	return subcommands.ExitSuccess
+}
+
+// printFeed prints the complete feed for a page (unpaginated).
+func (p *Page) printFeed(w io.Writer, ti time.Time) subcommands.ExitStatus {
+	f := feed(p, ti, 0, 0, URL)
+	if len(f.Items) == 0 {
+		fmt.Fprintf(os.Stderr, "Empty feed for %s\n", p.Name)
+		return subcommands.ExitFailure
+	}
+	_, err := w.Write([]byte(`<?xml version="1.0" encoding="UTF-8"?>`))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Cannot write prefix: %s\n", err)
+		return subcommands.ExitFailure
+	}
+	loadTemplates()
+	templates.RLock()
+	defer templates.RUnlock()
+	err = templates.template["feed.html"].Execute(w, f)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Cannot execute template: %s\n", err)
+		return subcommands.ExitFailure
+	}
+	return subcommands.ExitSuccess
+}

feed_cmd_test.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/google/subcommands"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestFeedCmd(t *testing.T) {
+	cleanup(t, "testdata/complete")
+	p := &Page{Name: "testdata/complete/2025-12-01", Body: []byte("# 2025-12-01\n")}
+	p.save()
+	p = &Page{Name: "testdata/complete/index", Body: []byte(`# Index
+* [2025-12-01](2025-12-01)
+`)}
+	p.save()
+
+	b := new(bytes.Buffer)
+	s := feedCli(b, []string{"testdata/complete/index.md"})
+	assert.Equal(t, subcommands.ExitSuccess, s)
+	assert.Contains(t, b.String(), "<fh:complete/>")
+	assert.Contains(t, b.String(), "<title>2025-12-01</title>")
+	assert.Contains(t, b.String(), "<pubDate>Mon, 01 Dec 2025 00:00:00") // ignore timezone
+}

feed_test.go

@@ -1,25 +1,27 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
+	"fmt"
 	"net/http"
+	"net/url"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestFeed(t *testing.T) {
 	assert.Contains(t,
-		assert.HTTPBody(makeHandler(viewHandler, false), "GET", "/view/index.rss", nil),
-		"Welcome to Oddµ")
+		assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/index.rss", nil),
+		"Welcome to Oddμ")
 }
 
 func TestNoFeed(t *testing.T) {
 	assert.HTTPStatusCode(t,
-		makeHandler(viewHandler, false), "GET", "/view/no-feed.rss", nil, http.StatusNotFound)
+		makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/no-feed.rss", nil, http.StatusNotFound)
 }
 
 func TestFeedItems(t *testing.T) {
 	cleanup(t, "testdata/feed")
-	index.load()
 
 	p1 := &Page{Name: "testdata/feed/cactus", Body: []byte(`# Cactus
 Green head and white hair
@@ -44,7 +46,7 @@ Writing poems about plants.
 * [My Dragon Tree](dragon)`)}
 	p3.save()
 
-	body := assert.HTTPBody(makeHandler(viewHandler, false), "GET", "/view/testdata/feed/plants.rss", nil)
+	body := assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/testdata/feed/plants.rss", nil)
 	assert.Contains(t, body, "<title>Plants</title>")
 	assert.Contains(t, body, "<title>Cactus</title>")
 	assert.Contains(t, body, "<title>Dragon</title>")
@@ -53,3 +55,148 @@ Writing poems about plants.
 	assert.Contains(t, body, "<category>Succulent</category>")
 	assert.Contains(t, body, "<category>Palmtree</category>")
 }
+
+func TestFeedPagination(t *testing.T) {
+	cleanup(t, "testdata/pagination")
+
+	p := &Page{Name: "testdata/pagination/one", Body: []byte("# One\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/two", Body: []byte("# Two\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/three", Body: []byte("# Three\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/four", Body: []byte("# Four\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/five", Body: []byte("# Five\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/six", Body: []byte("# Six\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/seven", Body: []byte("# Seven\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/eight", Body: []byte("# Eight\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/nine", Body: []byte("# Nine\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/ten", Body: []byte("# Ten\n")}
+	p.save()
+
+	p = &Page{Name: "testdata/pagination/index", Body: []byte(`# Index
+* [one](one)
+* [two](two)
+* [three](three)
+* [four](four)
+* [five](five)
+* [six](six)
+* [seven](seven)
+* [eight](eight)
+* [nine](nine)
+* [ten](ten)
+`)}
+	p.save()
+
+	body := assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/testdata/pagination/index.rss", nil)
+	assert.Contains(t, body, "<title>One</title>")
+	assert.Contains(t, body, "<title>Ten</title>")
+	assert.NotContains(t, body, `<atom:link href="https://example.org/view/testdata/pagination/index.rss?from=10&n=10" rel="next" type="application/rss+xml"/>`)
+
+	p = &Page{Name: "testdata/pagination/eleven", Body: []byte("# Eleven\n")}
+	p.save()
+	p = &Page{Name: "testdata/pagination/index", Body: []byte(`# Index
+* [one](one)
+* [two](two)
+* [three](three)
+* [four](four)
+* [five](five)
+* [six](six)
+* [seven](seven)
+* [eight](eight)
+* [nine](nine)
+* [ten](ten)
+* [eleven](eleven)
+`)}
+	p.save()
+
+	body = assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/testdata/pagination/index.rss", nil)
+	assert.NotContains(t, body, "<title>Eleven</title>")
+	assert.Contains(t, body, `<atom:link href="https://example.org/view/testdata/pagination/index.rss?from=10&amp;n=10" rel="next" type="application/rss+xml"/>`)
+
+	params := url.Values{}
+	params.Set("n", "0")
+	body = assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/testdata/pagination/index.rss", params)
+	assert.Contains(t, body, "<title>Eleven</title>")
+	assert.Contains(t, body, `<fh:complete/>`)
+
+	params = url.Values{}
+	params.Set("n", "3")
+	body = assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/testdata/pagination/index.rss", params)
+	assert.Contains(t, body, "<title>One</title>")
+	assert.Contains(t, body, "<title>Three</title>")
+	assert.NotContains(t, body, "<title>Four</title>")
+	assert.Contains(t, body, `<atom:link href="https://example.org/view/testdata/pagination/index.rss?from=3&amp;n=3" rel="next" type="application/rss+xml"/>`)
+
+	params = url.Values{}
+	params.Set("from", "3")
+	params.Set("n", "3")
+	body = assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/testdata/pagination/index.rss", params)
+	assert.NotContains(t, body, "<title>Three</title>")
+	assert.Contains(t, body, "<title>Four</title>")
+	assert.Contains(t, body, "<title>Six</title>")
+	assert.NotContains(t, body, "<title>Seven</title>")
+	assert.Contains(t, body, `<atom:link href="https://example.org/view/testdata/pagination/index.rss?from=0&amp;n=3" rel="previous" type="application/rss+xml"/>`)
+	assert.Contains(t, body, `<atom:link href="https://example.org/view/testdata/pagination/index.rss?from=6&amp;n=3" rel="next" type="application/rss+xml"/>`)
+
+	params = url.Values{}
+	params.Set("from", "2")
+	params.Set("n", "3")
+	body = assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET", "/view/testdata/pagination/index.rss", params)
+	assert.NotContains(t, body, "<title>Two</title>")
+	assert.Contains(t, body, "<title>Three</title>")
+	assert.Contains(t, body, "<title>Five</title>")
+	assert.NotContains(t, body, "<title>Six</title>")
+	assert.Contains(t, body, `<atom:link href="https://example.org/view/testdata/pagination/index.rss?from=0&amp;n=3" rel="previous" type="application/rss+xml"/>`)
+	assert.Contains(t, body, `<atom:link href="https://example.org/view/testdata/pagination/index.rss?from=5&amp;n=3" rel="next" type="application/rss+xml"/>`)
+}
+
+func TestFeedYearArchives(t *testing.T) {
+	cleanup(t, "testdata/archives")
+	p := &Page{Name: "testdata/archives/index", Body: []byte(`# Archives
+my bent fingers hurt
+keyboard rattling in the dark
+but no child in sight
+`)}
+	p.save()
+	body := assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET",
+		"/view/testdata/archives/index.rss", nil)
+	year, err := p.BlogYear()
+	assert.Greater(t, year, 0)
+	assert.NoError(t, err)
+	prevLink := fmt.Sprintf(`<atom:link href="https://example.org/view/testdata/archives/%d.rss?n=10" rel="previous" type="application/rss+xml"/>`, year+1)
+	nextLink := fmt.Sprintf(`<atom:link href="https://example.org/view/testdata/archives/%d.rss?n=10" rel="next" type="application/rss+xml"/>`, year-1)
+	assert.NotContains(t, body, prevLink)
+	assert.NotContains(t, body, nextLink)
+
+	p = &Page{Name: fmt.Sprintf("testdata/archives/%d", year-1), Body: []byte(`# Previously
+I have seen it all
+invasion and denial
+and cold winter hearts
+`)}
+	p.save()
+
+	body = assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET",
+		"/view/testdata/archives/index.rss", nil)
+	assert.NotContains(t, body, prevLink)
+	assert.Contains(t, body, nextLink)
+
+	p = &Page{Name: fmt.Sprintf("testdata/archives/%d", year+1), Body: []byte(`# Coming
+A night of thunder
+lightning, children, it's the war
+of our New Year's Eve
+`)}
+	p.save()
+
+	body = assert.HTTPBody(makeHandler(viewHandler, false, http.MethodGet), "GET",
+		"/view/testdata/archives/index.rss", nil)
+	assert.Contains(t, body, prevLink)
+	assert.Contains(t, body, nextLink)
+
+}

go.mod

@@ -1,14 +1,17 @@
-module alexschroeder.ch/cgit/oddmu
+module src.alexschroeder.ch/oddmu
 
-go 1.21.0
+go 1.22
+
+toolchain go1.22.3
 
 require (
-	github.com/bashdrew/goheif v0.0.0-20230406184952-7a08ca9c9bdd
 	github.com/disintegration/imaging v1.6.2
 	github.com/edwvee/exiffix v0.0.0-20210922235313-0f6cbda5e58f
 	github.com/fsnotify/fsnotify v1.7.0
 	github.com/gabriel-vasile/mimetype v1.4.3
-	github.com/gomarkdown/markdown v0.0.0-20231222211730-1d6d20845b47
+	github.com/gen2brain/heic v0.3.1
+	github.com/gen2brain/webp v0.5.2
+	github.com/gomarkdown/markdown v0.0.0-20250207164621-7a1f277a159e
 	github.com/google/subcommands v1.2.0
 	github.com/hexops/gotextdiff v1.0.3
 	github.com/microcosm-cc/bluemonday v1.0.26
@@ -22,15 +25,17 @@ require (
 require (
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/ebitengine/purego v0.8.1 // indirect
 	github.com/gorilla/css v1.0.1 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rivo/uniseg v0.4.6 // indirect
 	github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd // indirect
 	github.com/shopspring/decimal v1.3.1 // indirect
+	github.com/tetratelabs/wazero v1.8.1 // indirect
 	golang.org/x/image v0.15.0 // indirect
 	golang.org/x/net v0.20.0 // indirect
-	golang.org/x/sys v0.16.0 // indirect
+	golang.org/x/sys v0.21.0 // indirect
 	google.golang.org/protobuf v1.32.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,20 +1,24 @@
 github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
 github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
-github.com/bashdrew/goheif v0.0.0-20230406184952-7a08ca9c9bdd h1:SxkQeH4jjXT0zMgiRgkiIQjIvWfe9vXuTAmE3cfcQrU=
-github.com/bashdrew/goheif v0.0.0-20230406184952-7a08ca9c9bdd/go.mod h1:p1sbxRy+MY71fEWHcfRmerC8WUYXDFCExF9A7aXwp98=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/disintegration/imaging v1.6.2 h1:w1LecBlG2Lnp8B3jk5zSuNqd7b4DXhcjwek1ei82L+c=
 github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
+github.com/ebitengine/purego v0.8.1 h1:sdRKd6plj7KYW33EH5As6YKfe8m9zbN9JMrOjNVF/BE=
+github.com/ebitengine/purego v0.8.1/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
 github.com/edwvee/exiffix v0.0.0-20210922235313-0f6cbda5e58f h1:RMnUwTnNR070mFAEIoqMYjNirHj8i0h79VXTYyBCyVA=
 github.com/edwvee/exiffix v0.0.0-20210922235313-0f6cbda5e58f/go.mod h1:KoE3Ti1qbQXCb3s/XGj0yApHnbnNnn1bXTtB5Auq/Vc=
 github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
 github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
 github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
 github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
-github.com/gomarkdown/markdown v0.0.0-20231222211730-1d6d20845b47 h1:k4Tw0nt6lwro3Uin8eqoET7MDA4JnT8YgbCjc/g5E3k=
-github.com/gomarkdown/markdown v0.0.0-20231222211730-1d6d20845b47/go.mod h1:JDGcbDT52eL4fju3sZ4TeHGsQwhG9nbDV21aMyhwPoA=
+github.com/gen2brain/heic v0.3.1 h1:ClY5YTdXdIanw7pe9ZVUM9XcsqH6CCCa5CZBlm58qOs=
+github.com/gen2brain/heic v0.3.1/go.mod h1:m2sVIf02O7wfO8mJm+PvE91lnq4QYJy2hseUon7So10=
+github.com/gen2brain/webp v0.5.2 h1:aYdjbU/2L98m+bqUdkYMOIY93YC+EN3HuZLMaqgMD9U=
+github.com/gen2brain/webp v0.5.2/go.mod h1:Nb3xO5sy6MeUAHhru9H3GT7nlOQO5dKRNNlE92CZrJw=
+github.com/gomarkdown/markdown v0.0.0-20250207164621-7a1f277a159e h1:ESHlT0RVZphh4JGBz49I5R6nTdC8Qyc08vU25GQHzzQ=
+github.com/gomarkdown/markdown v0.0.0-20250207164621-7a1f277a159e/go.mod h1:JDGcbDT52eL4fju3sZ4TeHGsQwhG9nbDV21aMyhwPoA=
 github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
 github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/subcommands v1.2.0 h1:vWQspBTo2nEqTUFita5/KeEWlUL8kQObDFbub/EN9oE=
@@ -53,6 +57,8 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/tetratelabs/wazero v1.8.1 h1:NrcgVbWfkWvVc4UtT4LRLDf91PsOzDzefMdwhLfA550=
+github.com/tetratelabs/wazero v1.8.1/go.mod h1:yAI0XTsMBhREkM/YDAK/zNou3GoiAce1P6+rp/wQhjs=
 golang.org/x/exp v0.0.0-20240119083558-1b970713d09a h1:Q8/wZp0KX97QFTc2ywcOE0YRjZPVIx+MXInMzdvQqcA=
 golang.org/x/exp v0.0.0-20240119083558-1b970713d09a/go.mod h1:idGWGoKP1toJGkd5/ig9ZLuPcZBC3ewk7SzmH0uou08=
 golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
@@ -60,8 +66,8 @@ golang.org/x/image v0.15.0 h1:kOELfmgrmJlw4Cdb7g/QGuB3CvDrXbqEIww/pNtNBm8=
 golang.org/x/image v0.15.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
 golang.org/x/net v0.20.0 h1:aCL9BSgETF1k+blQaYUBx9hJ9LOGP3gAVemcZlf1Kpo=
 golang.org/x/net v0.20.0/go.mod h1:z8BVo6PvndSri0LbOE3hAn0apkU+1YvI6E70E9jsnvY=
-golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
-golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
 google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=

hashtags_cmd.go

@@ -0,0 +1,208 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"regexp"
+	"sort"
+	"strings"
+
+	"github.com/gomarkdown/markdown"
+	"github.com/gomarkdown/markdown/ast"
+	"github.com/google/subcommands"
+	"github.com/hexops/gotextdiff"
+	"github.com/hexops/gotextdiff/myers"
+	"github.com/hexops/gotextdiff/span"
+)
+
+type hashtagsCmd struct {
+	update bool
+	dryRun bool
+}
+
+func (cmd *hashtagsCmd) SetFlags(f *flag.FlagSet) {
+	f.BoolVar(&cmd.update, "update", false, "create and update hashtag pages")
+	f.BoolVar(&cmd.dryRun, "dry-run", false, "only report the changes it would make")
+}
+
+func (*hashtagsCmd) Name() string     { return "hashtags" }
+func (*hashtagsCmd) Synopsis() string { return "hashtag overview" }
+func (*hashtagsCmd) Usage() string {
+	return `hashtags:
+  Count the use of all hashtags and list them, separated by a tabulator.
+`
+}
+
+func (cmd *hashtagsCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	if cmd.update {
+		return hashtagsUpdateCli(os.Stdout, cmd.dryRun)
+	}
+	return hashtagsCli(os.Stdout)
+}
+
+// hashtagsCli runs the hashtags command on the command line. It is used
+// here with an io.Writer for easy testing.
+func hashtagsCli(w io.Writer) subcommands.ExitStatus {
+	index.load()
+	index.RLock()
+	defer index.RUnlock()
+
+	type hashtag struct {
+		label string
+		count int
+	}
+
+	hashtags := []hashtag{}
+
+	for token, docids := range index.token {
+		hashtags = append(hashtags, hashtag{label: token, count: len(docids)})
+	}
+
+	sort.Slice(hashtags, func(i, j int) bool {
+		return hashtags[i].count > hashtags[j].count
+	})
+
+	fmt.Fprintln(w, "Rank\tHashtag\tCount")
+	for i, hashtag := range hashtags {
+		fmt.Fprintf(w, "%d\t%s\t%d\n", i+1, hashtag.label, hashtag.count)
+	}
+
+	return subcommands.ExitSuccess
+}
+
+// hashtagsUpdateCli runs the hashtags command on the command line and creates and updates the hashtag pages in the
+// current directory. That is, pages in subdirectories are skipped! It is used here with an io.Writer for easy testing.
+func hashtagsUpdateCli(w io.Writer, dryRun bool) subcommands.ExitStatus {
+	index.load()
+	// no locking necessary since this is for the command-line
+	namesMap := make(map[string]string)
+	for hashtag, docids := range index.token {
+		if len(docids) <= 5 {
+			if dryRun {
+				fmt.Fprintf(w, "Skipping #%s because there are not enough entries (%d)\n", hashtag, len(docids))
+			}
+			continue
+		}
+		title, ok := namesMap[hashtag]
+		if !ok {
+			title = hashtagName(namesMap, hashtag, docids)
+			namesMap[hashtag] = title
+		}
+		pageName := strings.ReplaceAll(title, " ", "_")
+		h, err := loadPage(pageName)
+		original := ""
+		new := false
+		if err != nil {
+			new = true
+			h = &Page{Name: pageName, Body: []byte("# " + title + "\n\n#" + pageName + "\n\nBlog posts:\n\n")}
+		} else {
+			original = string(h.Body)
+		}
+		for _, docid := range docids {
+			name := index.documents[docid]
+			if strings.Contains(name, "/") {
+				continue
+			}
+			p, err := loadPage(name)
+			if err != nil {
+				fmt.Fprintf(w, "Loading %s: %s\n", name, err)
+				return subcommands.ExitFailure
+			}
+			if !p.IsBlog() {
+				continue
+			}
+			p.handleTitle(false)
+			if p.Title == "" {
+				p.Title = p.Name
+			}
+			esc := nameEscape(p.Base())
+			link := "* [" + p.Title + "](" + esc + ")\n"
+			// I guess & used to get escaped and now no longer does
+			re := regexp.MustCompile(`(?m)^\* \[[^\]]+\]\(` + strings.ReplaceAll(esc, "&", "(&|%26)") + `\)\n`)
+			addLinkToPage(h, link, re)
+		}
+		// only save if something changed
+		if string(h.Body) != original {
+			if dryRun {
+				if new {
+					fmt.Fprintf(w, "Creating %s.md\n", title)
+				} else {
+					fmt.Fprintf(w, "Updating %s.md\n", title)
+				}
+				fn := h.Name + ".md"
+				edits := myers.ComputeEdits(span.URIFromPath(fn), original, string(h.Body))
+				diff := fmt.Sprint(gotextdiff.ToUnified(fn+"~", fn, original, edits))
+				fmt.Fprint(w, diff)
+			} else {
+				err = h.save()
+				if err != nil {
+					fmt.Fprintf(w, "Saving hashtag %s failed: %s", hashtag, err)
+					return subcommands.ExitFailure
+				}
+			}
+		}
+	}
+	return subcommands.ExitSuccess
+}
+
+// Go through all the documents in the same directory and look for hashtag matches in the rendered HTML in order to
+// determine the most likely capitalization.
+func hashtagName(namesMap map[string]string, hashtag string, docids []docid) string {
+	candidate := make(map[string]int)
+	var mostPopular string
+	for _, docid := range docids {
+		name := index.documents[docid]
+		if strings.Contains(name, "/") {
+			continue
+		}
+		p, err := loadPage(name)
+		if err != nil {
+			continue
+		}
+		// parsing finds all the hashtags
+		parser, _ := wikiParser()
+		doc := markdown.Parse(p.Body, parser)
+		ast.WalkFunc(doc, func(node ast.Node, entering bool) ast.WalkStatus {
+			if entering {
+				if v, ok := node.(*ast.Link); ok {
+					for _, attr := range v.AdditionalAttributes {
+						if attr == `class="tag"` {
+							tagName := []byte("")
+							ast.WalkFunc(v, func(node ast.Node, entering bool) ast.WalkStatus {
+								if entering && node.AsLeaf() != nil {
+									tagName = append(tagName, node.AsLeaf().Literal...)
+								}
+								return ast.GoToNext
+							})
+							tag := string(tagName[1:])
+							if strings.EqualFold(hashtag, strings.ReplaceAll(tag, " ", "_")) {
+								_, ok := candidate[tag]
+								if ok {
+									candidate[tag]++
+								} else {
+									candidate[tag] = 1
+								}
+							}
+						}
+					}
+				}
+			}
+			return ast.GoToNext
+		})
+		count := 0
+		for key, val := range candidate {
+			if val > count {
+				mostPopular = key
+				count = val
+			}
+		}
+		// shortcut
+		if count >= 5 {
+			return mostPopular
+		}
+	}
+	return mostPopular
+}

hashtags_cmd_test.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/google/subcommands"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHashtagsCmd(t *testing.T) {
+	cleanup(t, "testdata/hashtag")
+	p := &Page{Name: "testdata/hashtag/hash", Body: []byte(`# Hash
+
+I hope for a time
+not like today, relentless,
+just crocus blooming
+
+#Crocus`)}
+	p.save()
+	b := new(bytes.Buffer)
+	s := hashtagsCli(b)
+	assert.Equal(t, subcommands.ExitSuccess, s)
+	x := b.String()
+	assert.Contains(t, x, "crocus\t")
+}

highlight.go

@@ -4,10 +4,8 @@ import (
 	"regexp"
 )
 
-// highlight splits the query string q into terms and highlights them
-// using the bold tag. Return the highlighted string.
-// This assumes that q already has all its meta characters quoted.
-func highlight(q string, re *regexp.Regexp, s string) string {
+// highlight matches for the regular expression using the bold tag.
+func highlight(re *regexp.Regexp, s string) string {
 	s = re.ReplaceAllString(s, "<b>$1</b>")
 	return s
 }

highlight_test.go

@@ -16,7 +16,7 @@ No birds to be heard.`
 
 	q := "window"
 	re, _ := re(q)
-	r := highlight(q, re, s)
+	r := highlight(re, s)
 	if r != h {
 		t.Logf("The highlighting is wrong in ｢%s｣", r)
 		t.Fail()
@@ -35,7 +35,7 @@ I hear the fountain`
 
 	q := "shout out"
 	re, _ := re(q)
-	r := highlight(q, re, s)
+	r := highlight(re, s)
 	if r != h {
 		t.Logf("The highlighting is wrong in ｢%s｣", r)
 		t.Fail()

html_cmd.go

@@ -4,53 +4,87 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"github.com/google/subcommands"
+	"html/template"
 	"io"
 	"os"
+	"strings"
+
+	"github.com/google/subcommands"
 )
 
 type htmlCmd struct {
-	useTemplate bool
+	template string
 }
 
 func (*htmlCmd) Name() string     { return "html" }
 func (*htmlCmd) Synopsis() string { return "render a page as HTML" }
 func (*htmlCmd) Usage() string {
-	return `html [-view] <page name> ...:
+	return `html [-template <template name>] <page name> ...:
   Render one or more pages as HTML.
+  Use a single - to read Markdown from stdin.
 `
 }
 
 func (cmd *htmlCmd) SetFlags(f *flag.FlagSet) {
-	f.BoolVar(&cmd.useTemplate, "view", false, "use the 'view.html' template.")
+	f.StringVar(&cmd.template, "template", "",
+		"use the given HTML file as a template (probably view.html or static.html).")
 }
 
 func (cmd *htmlCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
-	return htmlCli(os.Stdout, cmd.useTemplate, f.Args())
+	return htmlCli(os.Stdout, cmd.template, f.Args())
 }
 
-func htmlCli(w io.Writer, useTemplate bool, args []string) subcommands.ExitStatus {
-	for _, arg := range args {
-		p, err := loadPage(arg)
+func htmlCli(w io.Writer, template string, args []string) subcommands.ExitStatus {
+	if len(args) == 1 && args[0] == "-" {
+		body, err := io.ReadAll(os.Stdin)
 		if err != nil {
-			fmt.Fprintf(os.Stderr, "Cannot load %s: %s\n", arg, err)
+			fmt.Fprintf(w, "Cannot read from stdin: %s\n", err)
 			return subcommands.ExitFailure
 		}
-		if useTemplate {
-			p.handleTitle(true)
-			p.renderHtml()
-			t := "view.html"
-			loadTemplates()
-			err := templates.template[t].Execute(w, p)
-			if err != nil {
-				fmt.Fprintf(os.Stderr, "Cannot execute %s template for %s: %s\n", t, arg, err)
-				return subcommands.ExitFailure
-			}
-		} else {
-			// do not handle title
-			p.renderHtml()
-			fmt.Fprintln(w, p.Html)
+		p := &Page{Name: "stdin", Body: body}
+		return p.printHTML(w, template)
+	}
+	for _, name := range args {
+		if !strings.HasSuffix(name, ".md") {
+			fmt.Fprintf(os.Stderr, "%s does not end in '.md'\n", name)
+			return subcommands.ExitFailure
+		}
+		name = name[0 : len(name)-3]
+		p, err := loadPage(name)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Cannot load %s: %s\n", name, err)
+			return subcommands.ExitFailure
+		}
+		status := p.printHTML(w, template)
+		if status != subcommands.ExitSuccess {
+			return status
 		}
 	}
 	return subcommands.ExitSuccess
 }
+
+func (p *Page) printHTML(w io.Writer, fn string) subcommands.ExitStatus {
+	if fn == "" {
+		// do not handle title
+		p.renderHTML()
+		_, err := fmt.Fprintln(w, p.HTML)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Cannot write to stdout: %s\n", err)
+			return subcommands.ExitFailure
+		}
+		return subcommands.ExitSuccess
+	}
+	p.handleTitle(true)
+	p.renderHTML()
+	t, err := template.ParseFiles(fn)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Cannot parse template %s for %s: %s\n", fn, p.Name, err)
+		return subcommands.ExitFailure
+	}
+	err = t.Execute(w, p)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Cannot execute template %s for %s: %s\n", fn, p.Name, err)
+		return subcommands.ExitFailure
+	}
+	return subcommands.ExitSuccess
+}

html_cmd_test.go

@@ -2,16 +2,17 @@ package main
 
 import (
 	"bytes"
+	"testing"
+
 	"github.com/google/subcommands"
 	"github.com/stretchr/testify/assert"
-	"testing"
 )
 
 func TestHtmlCmd(t *testing.T) {
 	b := new(bytes.Buffer)
-	s := htmlCli(b, false, []string{"index"})
+	s := htmlCli(b, "", []string{"index.md"})
 	assert.Equal(t, subcommands.ExitSuccess, s)
-	r := `<h1 id="welcome-to-oddµ">Welcome to Oddµ</h1>
+	r := `<h1 id="welcome-to-oddμ">Welcome to Oddμ</h1>
 
 <p>Hello! 🙃</p>
 

index.go

@@ -5,23 +5,34 @@
 package main
 
 import (
-	"golang.org/x/exp/constraints"
+	"html/template"
 	"io/fs"
 	"log"
 	"path/filepath"
 	"sort"
 	"strings"
 	"sync"
+
+	"golang.org/x/exp/constraints"
 )
 
 type docid uint
 
+// ImageData holds the data used to search for images using the alt-text. Title is the alt-text; Name is the complete
+// URL including path (which is important since the image link itself only has the URL relative to the page in which it
+// is found; and Html is a copy of the Title with highlighting of a term as applied when searching. This is temporary.
+// It depends on the fact that Title is always plain text.
+type ImageData struct {
+	Title, Name string
+	HTML        template.HTML
+}
+
 // indexStore controls access to the maps used for search. Make sure to lock and unlock as appropriate.
 type indexStore struct {
 	sync.RWMutex
 
-	// next_id is the number of the next document added to the index
-	next_id docid
+	// nextID is the number of the next document added to the index
+	nextID docid
 
 	// index is an inverted index mapping tokens to document ids.
 	token map[string][]docid
@@ -31,6 +42,9 @@ type indexStore struct {
 
 	// titles is a map, mapping page names to titles.
 	titles map[string]string
+
+	// images is a map, mapping pages names to alt text to an array of image data.
+	images map[string][]ImageData
 }
 
 var index indexStore
@@ -41,17 +55,20 @@ func init() {
 
 // reset the index. This assumes that the index is locked. It's useful for tests.
 func (idx *indexStore) reset() {
-	idx.next_id = 0
+	idx.nextID = 0
 	idx.token = make(map[string][]docid)
 	idx.documents = make(map[docid]string)
 	idx.titles = make(map[string]string)
+	idx.images = make(map[string][]ImageData)
 }
 
 // addDocument adds the text as a new document. This assumes that the index is locked!
+// The hashtags (only!) are used as tokens. They are stored in lower case.
 func (idx *indexStore) addDocument(text []byte) docid {
-	id := idx.next_id
-	idx.next_id++
+	id := idx.nextID
+	idx.nextID++
 	for _, token := range hashtags(text) {
+		token = strings.ToLower(token)
 		ids := idx.token[token]
 		// Don't add same ID more than once. Checking the last
 		// position of the []docid works because the id is
@@ -102,6 +119,7 @@ func (idx *indexStore) deletePageName(name string) {
 		delete(idx.documents, id)
 	}
 	delete(idx.titles, name)
+	delete(idx.images, name)
 }
 
 // remove the page from the index. Do this when deleting a page. This assumes that the index is unlocked.
@@ -122,23 +140,22 @@ func (idx *indexStore) load() (int, error) {
 }
 
 // walk reads a file and adds it to the index. This assumes that the index is locked.
-func (idx *indexStore) walk(path string, info fs.FileInfo, err error) error {
+func (idx *indexStore) walk(fp string, info fs.FileInfo, err error) error {
 	if err != nil {
 		return err
 	}
 	// skip hidden directories and files
-	if path != "." && strings.HasPrefix(filepath.Base(path), ".") {
+	if fp != "." && strings.HasPrefix(filepath.Base(fp), ".") {
 		if info.IsDir() {
 			return filepath.SkipDir
-		} else {
-			return nil
 		}
-	}
-	// skipp all but page files
-	if !strings.HasSuffix(path, ".md") {
 		return nil
 	}
-	p, err := loadPage(strings.TrimSuffix(path, ".md"))
+	// skipp all but page files
+	if !strings.HasSuffix(fp, ".md") {
+		return nil
+	}
+	p, err := loadPage(strings.TrimSuffix(filepath.ToSlash(fp), ".md"))
 	if err != nil {
 		return err
 	}
@@ -153,6 +170,7 @@ func (idx *indexStore) addPage(p *Page) {
 	idx.documents[id] = p.Name
 	p.handleTitle(false)
 	idx.titles[p.Name] = p.Title
+	idx.images[p.Name] = p.images()
 }
 
 // add a page to the index. This assumes that the index is unlocked.
@@ -177,8 +195,8 @@ func (idx *indexStore) update(p *Page) {
 	idx.add(p)
 }
 
-// search searches the index for a query string and returns page
-// names.
+// search searches the index. The query string is parsed for tokens. Each token is turned to lower cased and looked up
+// in the index. Each page in the result must contain all the tokens. Returns page names.
 func (idx *indexStore) search(q string) []string {
 	idx.RLock()
 	defer idx.RUnlock()
@@ -187,6 +205,7 @@ func (idx *indexStore) search(q string) []string {
 	if len(hashtags) > 0 {
 		var r []docid
 		for _, token := range hashtags {
+			token = strings.ToLower(token)
 			if ids, ok := idx.token[token]; ok {
 				if r == nil {
 					r = ids
@@ -219,11 +238,12 @@ func intersection[T constraints.Ordered](a []T, b []T) []T {
 	r := make([]T, 0, maxLen)
 	var i, j int
 	for i < len(a) && j < len(b) {
-		if a[i] < b[j] {
+		switch {
+		case a[i] < b[j]:
 			i++
-		} else if a[i] > b[j] {
+		case a[i] > b[j]:
 			j++
-		} else {
+		default:
 			r = append(r, a[i])
 			i++
 			j++

index.md

@@ -1,4 +1,5 @@
-# Welcome to Oddµ
+
+# Welcome to Oddμ
 
 Hello! 🙃
 

index_test.go

@@ -1,9 +1,10 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"strings"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestIndexAdd(t *testing.T) {
@@ -11,8 +12,8 @@ func TestIndexAdd(t *testing.T) {
 	idx.reset()
 	idx.Lock()
 	defer idx.Unlock()
-	tag := "#hello"
-	id := idx.addDocument([]byte("oh hi " + tag))
+	tag := "hello"
+	id := idx.addDocument([]byte("oh hi #" + tag))
 	assert.Contains(t, idx.token, tag)
 	idx.deleteDocument(id)
 	assert.NotContains(t, idx.token, tag)
@@ -21,7 +22,7 @@ func TestIndexAdd(t *testing.T) {
 // TestIndex relies on README.md being indexed
 func TestIndex(t *testing.T) {
 	index.load()
-	q := "Oddµ"
+	q := "Oddμ"
 	pages, _ := search(q, "", "", 1, false)
 	assert.NotZero(t, len(pages))
 	for _, p := range pages {
@@ -31,10 +32,19 @@ func TestIndex(t *testing.T) {
 	}
 }
 
+// Lower case hashtag!
 func TestSearchHashtag(t *testing.T) {
+	cleanup(t, "testdata/search-hashtag")
+	p := &Page{Name: "testdata/search-hashtag/search", Body: []byte(`# Search
+
+I'm back in this room
+Shelf, table, chair, and shelf again
+Where are my glasses?
+
+#Searching`)}
+	p.save()
 	index.load()
-	q := "#like_this"
-	pages, _ := search(q, "", "", 1, false)
+	pages, _ := search("#searching", "", "", 1, false)
 	assert.NotZero(t, len(pages))
 }
 

languages.go

@@ -2,9 +2,10 @@ package main
 
 import (
 	"errors"
-	"github.com/pemistahl/lingua-go"
 	"os"
 	"strings"
+
+	"github.com/pemistahl/lingua-go"
 )
 
 // getLanguages returns the environment variable ODDMU_LANGUAGES or all languages.

languages_test.go

@@ -1,9 +1,10 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"os"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestAllLanguage(t *testing.T) {

links_cmd.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+
+	"github.com/google/subcommands"
+)
+
+type linksCmd struct {
+}
+
+func (cmd *linksCmd) SetFlags(f *flag.FlagSet) {
+}
+
+func (*linksCmd) Name() string     { return "links" }
+func (*linksCmd) Synopsis() string { return "list outgoing links for a page" }
+func (*linksCmd) Usage() string {
+	return `links <page name> ...:
+  Lists all the links on a page. Use a single - to read Markdown from stdin.
+`
+}
+
+func (cmd *linksCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	return linksCli(os.Stdout, f.Args())
+}
+
+// linksCli runs the links command on the command line. It is used
+// here with an io.Writer for easy testing.
+func linksCli(w io.Writer, args []string) subcommands.ExitStatus {
+	if len(args) == 1 && args[0] == "-" {
+		body, err := io.ReadAll(os.Stdin)
+		if err != nil {
+			fmt.Fprintf(w, "Cannot read from stdin: %s\n", err)
+			return subcommands.ExitFailure
+		}
+		p := &Page{Body: body}
+		for _, link := range p.links() {
+			fmt.Fprintln(w, link)
+		}
+		return subcommands.ExitSuccess
+	}
+	for _, name := range args {
+		if !strings.HasSuffix(name, ".md") {
+			fmt.Fprintf(os.Stderr, "%s does not end in '.md'\n", name)
+			return subcommands.ExitFailure
+		}
+		name = name[0 : len(name)-3]
+		p, err := loadPage(name)
+		if err != nil {
+			fmt.Fprintf(w, "Loading %s: %s\n", name, err)
+			return subcommands.ExitFailure
+		}
+		for _, link := range p.links() {
+			fmt.Fprintln(w, link)
+		}
+	}
+	return subcommands.ExitSuccess
+}

links_cmd_test.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/google/subcommands"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLinksCmd(t *testing.T) {
+	b := new(bytes.Buffer)
+	s := linksCli(b, []string{"README.md"})
+	assert.Equal(t, subcommands.ExitSuccess, s)
+	x := b.String()
+	assert.Contains(t, x, "https://alexschroeder.ch/view/oddmu/oddmu.1\n")
+}

list_cmd.go

@@ -4,11 +4,12 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"github.com/google/subcommands"
 	"io"
 	"os"
 	"path/filepath"
 	"strings"
+
+	"github.com/google/subcommands"
 )
 
 type listCmd struct {
@@ -20,7 +21,7 @@ func (cmd *listCmd) SetFlags(f *flag.FlagSet) {
 }
 
 func (*listCmd) Name() string     { return "list" }
-func (*listCmd) Synopsis() string { return "List pages with name and title." }
+func (*listCmd) Synopsis() string { return "list pages with name and title" }
 func (*listCmd) Usage() string {
 	return `list [-dir string]:
   List all pages with name and title, separated by a tabulator.

list_cmd_test.go

@@ -2,9 +2,10 @@ package main
 
 import (
 	"bytes"
+	"testing"
+
 	"github.com/google/subcommands"
 	"github.com/stretchr/testify/assert"
-	"testing"
 )
 
 func TestListCmd(t *testing.T) {
@@ -12,8 +13,8 @@ func TestListCmd(t *testing.T) {
 	s := listCli(b, "", nil)
 	assert.Equal(t, subcommands.ExitSuccess, s)
 	x := b.String()
-	assert.Contains(t, x, "README\tOddµ: A minimal wiki\n")
-	assert.Contains(t, x, "index\tWelcome to Oddµ\n")
+	assert.Contains(t, x, "README\tOddμ: A minimal wiki\n")
+	assert.Contains(t, x, "index\tWelcome to Oddμ\n")
 }
 
 func TestListSubdirCmd(t *testing.T) {

man/Makefile

@@ -3,6 +3,20 @@ MAN=$(patsubst %.txt,%,${TEXT})
 HTML=$(patsubst %.txt,%.html,${TEXT})
 MD=$(patsubst %.txt,%.md,${TEXT})
 
+help:
+	@echo Help for Oddmu Documentation
+	@echo ============================
+	@echo make man
+	@echo "    regenerate man pages"
+	@echo make html
+	@echo "    generate HTML pages"
+	@echo make md
+	@echo "    generate Markdown pages"
+	@echo make clean
+	@echo "    delete HTML and Markdown pages"
+	@echo make realclean
+	@echo "    delete HTML, Markdown and man pages"
+
 man: ${MAN}
 
 %: %.txt
@@ -11,33 +25,31 @@ man: ${MAN}
 html: ${HTML}
 
 %.html: %.md
-	echo '<!DOCTYPE html>' > $@
-	oddmu html $(basename $<) | sed --regexp-extended \
+	@echo Making $@
+	@echo '<!DOCTYPE html>' > $@
+	@oddmu html $< | sed --regexp-extended \
 	  -e 's/<a href="(oddmu[a-z.-]*.[1-9])">([^<>]*)<\/a>/<a href="\1.html">\2<\/a>/g' >> $@
 
 md: ${MD}
 
 %.md: %.txt
-	sed --regexp-extended \
-	  -e 's/\*([^*]+)\*/**\1**/g' \
-	  -e 's/_(oddmu[a-z.-]*)_\(([1-9])\)/[\1(\2)](\1.\2)/g' \
-	  -e 's/\b_([^_]+)_\b/*\1*/g' \
-	  -e 's/^# /## /' \
-	  -e 's/#([^ #])/\\#\1/' \
-	  -e 's/^([A-Z.-]*\([1-9]\))( ".*")?$$/# \1/' \
-	  < $< > $@
+	@echo Making $@
+	@perl scdoc-to-markdown < $< > $@
 
 README.md: ../README.md
-	sed --regexp-extended \
+	@echo Making $@
+	@sed --regexp-extended \
 	  -e 's/\]\(.*\/(.*)\.txt\)/](\1)/' \
 	  < $< > $@
 
 upload: ${MD} README.md
-	rsync --itemize-changes --archive *.md sibirocobombus:alexschroeder.ch/wiki/oddmu/
+	rsync --itemize-changes --archive *.md ../README.md sibirocobombus:alexschroeder.ch/wiki/oddmu/
 	make clean
 
 clean:
-	rm --force ${HTML} ${MD} README.md
+	@echo Removing HTML and Markdown files
+	@rm --force ${HTML} ${MD} README.md
 
 realclean: clean
-	rm --force ${MAN}
+	@echo Removing man pages
+	@rm --force ${MAN}

man/oddmu-apache.5

@@ -5,13 +5,13 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-APACHE" "5" "2024-02-19"
+.TH "ODDMU-APACHE" "5" "2025-07-16"
 .PP
 .SH NAME
 .PP
 oddmu-apache - how to setup Apache as a reverse proxy for Oddmu
 .PP
-.SS DESCRIPTION
+.SH DESCRIPTION
 .PP
 The oddmu program serves the current working directory as a wiki on port 8080.\&
 This is an unpriviledged port so an ordinary user account can do this.\&
@@ -22,7 +22,7 @@ The best way to protect the wiki against vandalism and spam is to use a regular
 web server as reverse proxy.\& This page explains how to setup Apache on Debian to
 do this.\&
 .PP
-.SS CONFIGURATION
+.SH CONFIGURATION
 .PP
 HTTPS is not part of Oddmu.\& You probably want to configure this in your
 webserver.\& I guess you could use stunnel, too.\& If you'\&re using Apache, you can
@@ -48,7 +48,7 @@ ServerAdmin alex@alexschroeder\&.ch
 <VirtualHost *:443>
   ServerName transjovian\&.org
   SSLEngine on
-  ProxyPassMatch "^/((view|diff|edit|save|add|append|upload|drop|search|archive)/(\&.*))?$" 
+  ProxyPassMatch "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive)/(\&.*))?$" 
                  "http://localhost:8080/$1"
 </VirtualHost>
 .fi
@@ -132,7 +132,7 @@ ServerAdmin alex@alexschroeder\&.ch
 <VirtualHost *:443>
   ServerName transjovian\&.org
   SSLEngine on
-  ProxyPassMatch "^/((view|diff|edit|save|add|append|upload|drop|search|archive)/(\&.*))?$" 
+  ProxyPassMatch "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive)/(\&.*))?$" 
                  "http://localhost:8080/$1"
 </VirtualHost>
 .fi
@@ -144,15 +144,6 @@ Instead of having Oddmu listen on a TCP port, you can have it listen on a
 Unix-domain socket.\& This requires socket activation.\& An example of configuring
 the service is given in \fIoddmu.\&service(5)\fR.\&
 .PP
-To test just the unix domain socket, use \fIncat(1)\fR:
-.PP
-.nf
-.RS 4
-echo -e "GET /view/index HTTP/1\&.1rnHost: localhostrnrn" 
-  | ncat --unixsock /run/oddmu/oddmu\&.sock
-.fi
-.RE
-.PP
 On the Apache side, you can proxy to the socket directly.\& This sends all
 requests to the socket:
 .PP
@@ -179,7 +170,7 @@ In that case, you need to use the ProxyPassMatch directive.\&
 .PP
 .nf
 .RS 4
-ProxyPassMatch "^/((view|diff|edit|save|add|append|upload|drop|search|archive)/(\&.*))?$" 
+ProxyPassMatch "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive)/(\&.*))?$" 
                "unix:/run/oddmu/oddmu\&.sock|http://localhost/$1"
 .fi
 .RE
@@ -198,7 +189,7 @@ A workaround is to add the redirect manually and drop the question-mark:
 .nf
 .RS 4
 RedirectMatch "^/$" "/view/index"
-ProxyPassMatch "^/((view|diff|edit|save|add|append|upload|drop|search|archive)/(\&.*))$" 
+ProxyPassMatch "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive)/(\&.*))$" 
                "unix:/run/oddmu/oddmu\&.sock|http://localhost/$1"
 .fi
 .RE
@@ -272,10 +263,10 @@ expression, all directories matching the regular expression are excluded.\& See
 .PP
 In the following example, ODDMU_FILTER is set to "^secret/".\&
 .PP
-http://transjovian.\&org/search/index?\&q=something does not search the "secret/"
+"http://transjovian.\&org/search/index?\&q=something" does not search the "secret/"
 directory and its subdirectories are excluded.\&
 .PP
-http://transjovian.\&org/search/secret/index?\&q=something searches just the
+"http://transjovian.\&org/search/secret/index?\&q=something" searches just the
 "secret" directory and its subdirectories.\&
 .PP
 You need to configure the web server to prevent access to the "secret/"
@@ -283,7 +274,7 @@ directory:
 .PP
 .nf
 .RS 4
-<LocationMatch "^/(edit|save|add|append|upload|drop|(view|search|archive)/secret)/">
+<LocationMatch "^/(edit|save|add|append|upload|drop|(view|preview|search|archive)/secret)/">
   AuthType Basic
   AuthName "Password Required"
   AuthUserFile /home/oddmu/\&.htpasswd

man/oddmu-apache.5.txt

@@ -4,7 +4,7 @@ ODDMU-APACHE(5)
 
 oddmu-apache - how to setup Apache as a reverse proxy for Oddmu
 
-## DESCRIPTION
+# DESCRIPTION
 
 The oddmu program serves the current working directory as a wiki on port 8080.
 This is an unpriviledged port so an ordinary user account can do this.
@@ -15,7 +15,7 @@ The best way to protect the wiki against vandalism and spam is to use a regular
 web server as reverse proxy. This page explains how to setup Apache on Debian to
 do this.
 
-## CONFIGURATION
+# CONFIGURATION
 
 HTTPS is not part of Oddmu. You probably want to configure this in your
 webserver. I guess you could use stunnel, too. If you're using Apache, you can
@@ -40,7 +40,7 @@ ServerAdmin alex@alexschroeder.ch
 <VirtualHost *:443>
   ServerName transjovian.org
   SSLEngine on
-  ProxyPassMatch "^/((view|diff|edit|save|add|append|upload|drop|search|archive)/(.*))?$" \
+  ProxyPassMatch "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive)/(.*)|sitemap\.xml)?$" \
                  "http://localhost:8080/$1"
 </VirtualHost>
 ```
@@ -106,13 +106,13 @@ ServerAdmin alex@alexschroeder.ch
   ServerName transjovian.org
   ProxyPassMatch "^/((view|diff|search|archive)/(.*))?$" \
                  "http://localhost:8080/$1"
-  RedirectMatch  "^/((edit|save|add|append|upload|drop)/(.*))?$" \
+  RedirectMatch  "^/((edit|save|add|append|upload|drop)/(.*)|sitemap\.xml)?$" \
                  "https://transjovian.org/$1"
 </VirtualHost>
 <VirtualHost *:443>
   ServerName transjovian.org
   SSLEngine on
-  ProxyPassMatch "^/((view|diff|edit|save|add|append|upload|drop|search|archive)/(.*))?$" \
+  ProxyPassMatch "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive)/(.*)|sitemap\.xml)?$" \
                  "http://localhost:8080/$1"
 </VirtualHost>
 ```
@@ -123,13 +123,6 @@ Instead of having Oddmu listen on a TCP port, you can have it listen on a
 Unix-domain socket. This requires socket activation. An example of configuring
 the service is given in _oddmu.service(5)_.
 
-To test just the unix domain socket, use _ncat(1)_:
-
-```
-echo -e "GET /view/index HTTP/1.1\r\nHost: localhost\r\n\r\n" \
-  | ncat --unixsock /run/oddmu/oddmu.sock
-```
-
 On the Apache side, you can proxy to the socket directly. This sends all
 requests to the socket:
 
@@ -151,7 +144,7 @@ You probably want to serve some static files as well (see *Serve static files*).
 In that case, you need to use the ProxyPassMatch directive.
 
 ```
-ProxyPassMatch "^/((view|diff|edit|save|add|append|upload|drop|search|archive)/(.*))?$" \
+ProxyPassMatch "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive)/(.*)|sitemap\.xml)?$" \
                "unix:/run/oddmu/oddmu.sock|http://localhost/$1"
 ```
 
@@ -166,7 +159,7 @@ A workaround is to add the redirect manually and drop the question-mark:
 
 ```
 RedirectMatch "^/$" "/view/index"
-ProxyPassMatch "^/((view|diff|edit|save|add|append|upload|drop|search|archive)/(.*))$" \
+ProxyPassMatch "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive)/(.*)|sitemap\.xml)$" \
                "unix:/run/oddmu/oddmu.sock|http://localhost/$1"
 ```
 
@@ -220,8 +213,9 @@ The way Oddmu handles subdirectories is that all files and directories are
 visible, except for "hidden" files and directories (whose name starts with a
 period). Specifically, do not rely on Apache to hide locations in subdirectories
 from public view. Search reveals the existence of these pages and produces an
-extract, even if users cannot follow the links. Archive links pack all the
-subdirectories, including locations you may have hidden from view using Apache.
+extract, even if users cannot follow the links. The Sitemap lists all pages,
+including subdirectories. Archive links pack all the subdirectories, including
+locations you may have hidden from view using Apache.
 
 If you to treat subdirectories as separate sites, you need to set the
 environment variable ODDMU_FILTER to a regular expression matching the those
@@ -231,17 +225,17 @@ _oddmu-filter_(7).
 
 In the following example, ODDMU_FILTER is set to "^secret/".
 
-http://transjovian.org/search/index?q=something does not search the "secret/"
+"http://transjovian.org/search/index?q=something" does not search the "secret/"
 directory and its subdirectories are excluded.
 
-http://transjovian.org/search/secret/index?q=something searches just the
+"http://transjovian.org/search/secret/index?q=something" searches just the
 "secret" directory and its subdirectories.
 
 You need to configure the web server to prevent access to the "secret/"
 directory:
 
 ```
-<LocationMatch "^/(edit|save|add|append|upload|drop|(view|search|archive)/secret)/">
+<LocationMatch "^/(edit|save|add|append|upload|drop|(view|preview|search|archive)/secret)/">
   AuthType Basic
   AuthName "Password Required"
   AuthUserFile /home/oddmu/.htpasswd
@@ -275,8 +269,8 @@ Disallow: /
 Your site now serves "/robots.txt" without interfering with the wiki, and
 without needing a wiki page.
 
-Another option would be to create a CSS file and use it with a <link> element in
-all the templates instead of relying on the <style> element.
+Another option would be to create a CSS file and use it with a \<link\> element in
+all the templates instead of relying on the \<style\> element.
 
 The "view.html" template would start as follows:
 
@@ -351,10 +345,10 @@ https://httpd.apache.org/docs/current/mod/mod_proxy.html
 "Robot exclusion standard" on Wikipedia.
 https://en.wikipedia.org/wiki/Robot_exclusion_standard
 
-"<style>: The Style Information element"
+"\<style\>: The Style Information element"
 https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style
 
-"<link>: The External Resource Link element"
+"\<link\>: The External Resource Link element"
 https://developer.mozilla.org/en-US/docs/Web/HTML/Element/link
 
 # AUTHORS

man/oddmu-export.1

@@ -0,0 +1,79 @@
+.\" Generated by scdoc 1.11.3
+.\" Complete documentation for this program is not available as a GNU info page
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.nh
+.ad l
+.\" Begin generated content:
+.TH "ODDMU-EXPORT" "1" "2025-08-31"
+.PP
+.SH NAME
+.PP
+oddmu-export - export all pages into one file
+.PP
+.SH SYNOPSIS
+.PP
+\fBoddmu export\fR [\fB-template\fR \fIfilename\fR]
+.PP
+.SH DESCRIPTION
+.PP
+The "export" subcommand prints a RSS file containing all the pages to stdout.\&
+You probably want to redirect this into a file so that you can upload and import
+it somewhere.\&
+.PP
+Note that this only handles pages (Markdown files).\& All other files (images,
+PDFs, whatever else you uploaded) are not part of the feed and have to be
+uploaded to the new platform using some other way.\&
+.PP
+The \fB-template\fR option specifies the template to use.\& If the template filename
+ends in \fI.\&xml\fR, \fI.\&html\fR or \fI.\&rss\fR, it is assumed to contain XML and the optional
+XML preamble is printed and appropriate escaping rules are used.\&
+.PP
+.SH FILES
+.PP
+By default, the export uses the \fB\fRfeed.\&html\fB\fR template in the current directory.\&
+.PP
+.SH EXAMPLES
+.PP
+Export all the pages into a big XML file:
+.PP
+.nf
+.RS 4
+env ODDMU_LANGUAGES=de,en oddmu export > /tmp/export\&.xml
+.fi
+.RE
+.PP
+Alternatively, consider a template file like the following, to generate a JSON
+feed.\& The rule to disallow a comma at the end of arrays means that we need to
+add an empty tag and an empty item, unfortunately:
+.PP
+.nf
+.RS 4
+{
+  "version": "https://jsonfeed\&.org/version/1\&.1",
+  "title": "{{\&.Title}}",
+  "home_page_url": "https://alexschroeder\&.ch",
+  "others": [],
+  "items": [{{range \&.Items}}
+    {
+      "id": "{{\&.Name}}",
+      "url": "https://alexschroeder\&.ch/view/{{\&.Name}}",
+      "title": "{{\&.Title}}",
+      "content_html": "{{\&.Html}}",
+      "date_modified": "{{\&.Date}}",
+      "tags": [{{range \&.Hashtags}}"{{\&.}}",{{end}}""],
+      "language": "{{\&.Language}}"
+    },{{end}}
+    {}
+  ]
+}
+.fi
+.RE
+.PP
+.SH SEE ALSO
+.PP
+\fIoddmu\fR(1), \fIoddmu-templates\fR(5), \fIoddmu-static\fR(1)
+.PP
+.SH AUTHORS
+.PP
+Maintained by Alex Schroeder <alex@gnu.\&org>.\&

man/oddmu-export.1.txt

@@ -0,0 +1,68 @@
+ODDMU-EXPORT(1)
+
+# NAME
+
+oddmu-export - export all pages into one file
+
+# SYNOPSIS
+
+*oddmu export* [*-template* _filename_]
+
+# DESCRIPTION
+
+The "export" subcommand prints a RSS file containing all the pages to stdout.
+You probably want to redirect this into a file so that you can upload and import
+it somewhere.
+
+Note that this only handles pages (Markdown files). All other files (images,
+PDFs, whatever else you uploaded) are not part of the feed and have to be
+uploaded to the new platform using some other way.
+
+The *-template* option specifies the template to use. If the template filename
+ends in _.xml_, _.html_ or _.rss_, it is assumed to contain XML and the optional
+XML preamble is printed and appropriate escaping rules are used.
+
+# FILES
+
+By default, the export uses the **feed.html** template in the current directory.
+
+# EXAMPLES
+
+Export all the pages into a big XML file:
+
+```
+env ODDMU_LANGUAGES=de,en oddmu export > /tmp/export.xml
+```
+
+Alternatively, consider a template file like the following, to generate a JSON
+feed. The rule to disallow a comma at the end of arrays means that we need to
+add an empty tag and an empty item, unfortunately:
+
+```
+{
+  "version": "https://jsonfeed.org/version/1.1",
+  "title": "{{.Title}}",
+  "home_page_url": "https://alexschroeder.ch",
+  "others": [],
+  "items": [{{range .Items}}
+    {
+      "id": "{{.Name}}",
+      "url": "https://alexschroeder.ch/view/{{.Name}}",
+      "title": "{{.Title}}",
+      "content_html": "{{.Html}}",
+      "date_modified": "{{.Date}}",
+      "tags": [{{range .Hashtags}}"{{.}}",{{end}}""],
+      "language": "{{.Language}}"
+    },{{end}}
+    {}
+  ]
+}
+```
+
+# SEE ALSO
+
+_oddmu_(1), _oddmu-templates_(5), _oddmu-static_(1)
+
+# AUTHORS
+
+Maintained by Alex Schroeder <alex@gnu.org>.

man/oddmu-feed.1

@@ -0,0 +1,59 @@
+.\" Generated by scdoc 1.11.3
+.\" Complete documentation for this program is not available as a GNU info page
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.nh
+.ad l
+.\" Begin generated content:
+.TH "ODDMU-FEED" "1" "2025-12-31"
+.PP
+.SH NAME
+.PP
+oddmu-feed - render Oddmu page feed
+.PP
+.SH SYNOPSIS
+.PP
+\fBoddmu feed\fR \fIpage-name\fR .\&.\&.\&
+.PP
+.SH DESCRIPTION
+.PP
+The "feed" subcommand opens the given Markdown files and writes the resulting
+RSS files without item limit (ordinarily, this default is 10 items per feed).\&
+This uses the "feed.\&html" template.\& Use "-" as the page name if you want to read
+Markdown from \fBstdin\fR.\&
+.PP
+Unlike the feeds generated by the \fBstatic\fR subcommand, the \fBfeed\fR command does
+not limit the feed to the ten most recent items.\& Instead, all items on the list
+are turned into feed items.\&
+.PP
+Furthermore, if the items on the list are blog posts (their page name starts
+with an ISO date), then this ISO date is used for the last update date to the
+page instead of the last modification time of the file.\& The idea, more or less,
+is that this feed is an archive feed and that in this context the creation date
+is more important than the last modification date.\&
+.PP
+.SH EXAMPLES
+.PP
+Generate "emacs.\&rss" from "emacs.\&md":
+.PP
+.nf
+.RS 4
+oddmu feed emacs\&.md
+.fi
+.RE
+.PP
+Alternatively:
+.PP
+.nf
+.RS 4
+oddmu feed - < emacs\&.md > emacs\&.rss
+.fi
+.RE
+.PP
+.SH SEE ALSO
+.PP
+\fIoddmu\fR(1), \fIoddmu-export\fR(1), \fIoddmu-static\fR(1)
+.PP
+.SH AUTHORS
+.PP
+Maintained by Alex Schroeder <alex@gnu.\&org>.\&

man/oddmu-feed.1.txt

@@ -0,0 +1,48 @@
+ODDMU-FEED(1)
+
+# NAME
+
+oddmu-feed - render Oddmu page feed
+
+# SYNOPSIS
+
+*oddmu feed* _page-name_ ...
+
+# DESCRIPTION
+
+The "feed" subcommand opens the given Markdown files and writes the resulting
+RSS files without item limit (ordinarily, this default is 10 items per feed).
+This uses the "feed.html" template. Use "-" as the page name if you want to read
+Markdown from *stdin*.
+
+Unlike the feeds generated by the *static* subcommand, the *feed* command does
+not limit the feed to the ten most recent items. Instead, all items on the list
+are turned into feed items.
+
+Furthermore, if the items on the list are blog posts (their page name starts
+with an ISO date), then this ISO date is used for the last update date to the
+page instead of the last modification time of the file. The idea, more or less,
+is that this feed is an archive feed and that in this context the creation date
+is more important than the last modification date.
+
+# EXAMPLES
+
+Generate "emacs.rss" from "emacs.md":
+
+```
+oddmu feed emacs.md
+```
+
+Alternatively:
+
+```
+oddmu feed - < emacs.md > emacs.rss
+```
+
+# SEE ALSO
+
+_oddmu_(1), _oddmu-export_(1), _oddmu-static_(1)
+
+# AUTHORS
+
+Maintained by Alex Schroeder <alex@gnu.org>.

man/oddmu-filter.7

@@ -5,7 +5,7 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-FILTER" "7" "2024-02-19"
+.TH "ODDMU-FILTER" "7" "2024-09-30"
 .PP
 .SH NAME
 .PP
@@ -18,22 +18,17 @@ not just a single page.\& These actions walk the directory tree, including all
 subdirectories.\& In some cases, this is not desirable.\&
 .PP
 Sometimes, subdirectories are separate sites, like the sites of other projects
-or different people.\& Essentially, the subdirectory acts as a different site.\&
-Depending on how you think about it, you might not want to include those "sites"
-in searches or archives of the whole site.\&
-.PP
-What'\&s important in this situation is whether the visitor is looking at the
-"main site" (a page further up in the directory tree) or at a particular page in
-a "separate site".\&
+or different people.\& Depending on how you think about it, you might not want to
+include those "sites" in searches or archives of the whole site.\&
 .PP
 Since directory tree actions always start in the directory the visitor is
-currenly looking at, directory tree actions starting in a "separate site"
+currently looking at, directory tree actions starting in a "separate site"
 automatically act as expected.\& The action is limited to that subdirectory tree.\&
 .PP
 When visitors look at a page in the "main site", however, directory tree actions
 must skip any sub directories that are part of a "separate site".\&
 .PP
-The way to identify separate sates is via the environment variable ODDMU_FILTER.\&
+The way to identify separate sites is via the environment variable ODDMU_FILTER.\&
 It'\&s value is a regular expression matching separate sites.\&
 .PP
 .SH EXAMPLES

man/oddmu-filter.7.txt

@@ -6,27 +6,22 @@ oddmu-filter - keeping subdirectories separate
 
 # DESCRIPTION
 
-There are actions such as searching and archiving that act on multiple pages,
-not just a single page. These actions walk the directory tree, including all
-subdirectories. In some cases, this is not desirable.
+There are actions such as producing the sitemap, searching and archiving that
+act on multiple pages, not just a single page. These actions walk the directory
+tree, including all subdirectories. In some cases, this is not desirable.
 
 Sometimes, subdirectories are separate sites, like the sites of other projects
-or different people. Essentially, the subdirectory acts as a different site.
-Depending on how you think about it, you might not want to include those "sites"
-in searches or archives of the whole site.
-
-What's important in this situation is whether the visitor is looking at the
-"main site" (a page further up in the directory tree) or at a particular page in
-a "separate site".
+or different people. Depending on how you think about it, you might not want to
+include those "sites" in searches, sitemaps or archives of the whole site.
 
 Since directory tree actions always start in the directory the visitor is
-currenly looking at, directory tree actions starting in a "separate site"
+currently looking at, directory tree actions starting in a "separate site"
 automatically act as expected. The action is limited to that subdirectory tree.
 
 When visitors look at a page in the "main site", however, directory tree actions
 must skip any sub directories that are part of a "separate site".
 
-The way to identify separate sates is via the environment variable ODDMU_FILTER.
+The way to identify separate sites is via the environment variable ODDMU_FILTER.
 It's value is a regular expression matching separate sites.
 
 # EXAMPLES

man/oddmu-hashtags.1

@@ -0,0 +1,66 @@
+.\" Generated by scdoc 1.11.3
+.\" Complete documentation for this program is not available as a GNU info page
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.nh
+.ad l
+.\" Begin generated content:
+.TH "ODDMU-HASHTAGS" "1" "2025-08-09"
+.PP
+.SH NAME
+.PP
+oddmu-hashtags - work with hashtags
+.PP
+.SH SYNOPSIS
+.PP
+\fBoddmu hashtags\fR
+.PP
+\fBoddmu hashtags -update\fR [\fB-dry-run\fR]
+.PP
+.SH DESCRIPTION
+.PP
+By default, the "hashtags" subcommand counts all the hashtags used and lists
+them, separated by a TAB character.\&
+.PP
+With the \fB-update\fR flag, the hashtag pages are update with links to all the blog
+pages having the corresponding tag.\& This only necessary when migrating a
+collection of Markdown files.\& Ordinarily, Oddmu maintains the hashtag pages
+automatically.\& When writing pages offline, use \fIoddmu-notify\fR(1) to update the
+hashtag pages.\&
+.PP
+Use the \fB-dry-run\fR flag to see what would change with the \fB-update\fR flag without
+actually changing any files.\&
+.PP
+.SH EXAMPLES
+.PP
+List the top 10 hashtags.\& This requires 11 lines because of the header line.\&
+.PP
+.nf
+.RS 4
+oddmu hashtags | head -n 11
+.fi
+.RE
+.PP
+See what kind of changes Oddmu would suggest:
+.PP
+.nf
+.RS 4
+oddmu hashtags -update -dry-run
+.fi
+.RE
+.PP
+And then do it:
+.PP
+.nf
+.RS 4
+oddmu hashtags -update
+.fi
+.RE
+.PP
+.SH SEE ALSO
+.PP
+\fIoddmu\fR(1)
+.PP
+.SH AUTHORS
+.PP
+Maintained by Alex Schroeder <alex@gnu.\&org>.\&

man/oddmu-hashtags.1.txt

@@ -0,0 +1,53 @@
+ODDMU-HASHTAGS(1)
+
+# NAME
+
+oddmu-hashtags - work with hashtags
+
+# SYNOPSIS
+
+*oddmu hashtags*
+
+*oddmu hashtags -update* [*-dry-run*]
+
+# DESCRIPTION
+
+By default, the "hashtags" subcommand counts all the hashtags used and lists
+them, separated by a TAB character.
+
+With the *-update* flag, the hashtag pages are update with links to all the blog
+pages having the corresponding tag. This only necessary when migrating a
+collection of Markdown files. Ordinarily, Oddmu maintains the hashtag pages
+automatically. When writing pages offline, use _oddmu-notify_(1) to update the
+hashtag pages.
+
+Use the *-dry-run* flag to see what would change with the *-update* flag without
+actually changing any files.
+
+# EXAMPLES
+
+List the top 10 hashtags. This requires 11 lines because of the header line.
+
+```
+oddmu hashtags | head -n 11
+```
+
+See what kind of changes Oddmu would suggest:
+
+```
+oddmu hashtags -update -dry-run
+```
+
+And then do it:
+
+```
+oddmu hashtags -update
+```
+
+# SEE ALSO
+
+_oddmu_(1)
+
+# AUTHORS
+
+Maintained by Alex Schroeder <alex@gnu.org>.

man/oddmu-html.1

@@ -5,40 +5,50 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-HTML" "1" "2024-02-26"
+.TH "ODDMU-HTML" "1" "2025-04-05"
 .PP
 .SH NAME
 .PP
-oddmu-html - render Oddmu page HTML from the command-line
+oddmu-html - render Oddmu page HTML
 .PP
 .SH SYNOPSIS
 .PP
-\fBoddmu html\fR [-view] \fIpage-name\fR
+\fBoddmu html\fR [\fB\fR-template\fB\fR \fItemplate-name\fR] \fIpage-name\fR
 .PP
 .SH DESCRIPTION
 .PP
-The "html" subcommand opens the Markdown file for the given page name (appending
-the ".\&md" extension) and prints the HTML to STDOUT without invoking the
-"view.\&html" template.\&
+The "html" subcommand opens the given Markdown file and prints the resulting
+HTML to STDOUT without invoking the "view.\&html" template.\& Use "-" as the page
+name if you want to read Markdown from \fBstdin\fR.\&
 .PP
 .SH OPTIONS
 .PP
-\fB-view\fR
+\fB\fR-template\fB\fR \fItemplate-name\fR
 .RS 4
-Use the "view.\&html" template to render the page.\& Without this, the HTML
-lacks html and body tags.\&
+Use the given template to render the page.\& Without this, the HTML lacks
+html and body tags.\& The only two options that make sense are "view.\&html"
+and "static.\&html".\&
 .PP
 .RE
-.SH EXAMPLE
+.SH EXAMPLES
 .PP
-Generate the HTML for "README.\&md":
+Generate "README.\&html" from "README.\&md":
 .PP
 .nf
 .RS 4
-oddmu html README
+oddmu html README\&.md > README\&.html
 .fi
 .RE
 .PP
+Alternatively:
+.PP
+.nf
+.RS 4
+oddmu html - < README\&.md > README\&.html
+.fi
+.RE
+.PP
+.PP
 .SH ENVIRONMENT
 .PP
 The ODDMU_WEBFINGER environment variable has no effect in this situation.\&

man/oddmu-html.1.txt

@@ -2,32 +2,40 @@ ODDMU-HTML(1)
 
 # NAME
 
-oddmu-html - render Oddmu page HTML from the command-line
+oddmu-html - render Oddmu page HTML
 
 # SYNOPSIS
 
-*oddmu html* [-view] _page-name_
+*oddmu html* [**-template** _template-name_] _page-name_
 
 # DESCRIPTION
 
-The "html" subcommand opens the Markdown file for the given page name (appending
-the ".md" extension) and prints the HTML to STDOUT without invoking the
-"view.html" template.
+The "html" subcommand opens the given Markdown file and prints the resulting
+HTML to STDOUT without invoking the "view.html" template. Use "-" as the page
+name if you want to read Markdown from *stdin*.
 
 # OPTIONS
 
-*-view*
-	Use the "view.html" template to render the page. Without this, the HTML
-	lacks html and body tags.
+**-template** _template-name_
+	Use the given template to render the page. Without this, the HTML lacks
+	html and body tags. The only two options that make sense are "view.html"
+	and "static.html".
 
-# EXAMPLE
+# EXAMPLES
 
-Generate the HTML for "README.md":
+Generate "README.html" from "README.md":
 
 ```
-oddmu html README
+oddmu html README.md > README.html
 ```
 
+Alternatively:
+
+```
+oddmu html - < README.md > README.html
+```
+
+
 # ENVIRONMENT
 
 The ODDMU_WEBFINGER environment variable has no effect in this situation.

man/oddmu-links.1

@@ -0,0 +1,29 @@
+.\" Generated by scdoc 1.11.3
+.\" Complete documentation for this program is not available as a GNU info page
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.nh
+.ad l
+.\" Begin generated content:
+.TH "ODDMU-LINKS" "1" "2025-04-05"
+.PP
+.SH NAME
+.PP
+oddmu-links - list outgoing links for pages
+.PP
+.SH SYNOPSIS
+.PP
+\fBoddmu links\fR  \fIpage names.\&.\&.\&\fR
+.PP
+.SH DESCRIPTION
+.PP
+The "links" subcommand lists outgoing links for one or more Markdown files.\& Use
+"-" as the page name if you want to read Markdown from \fBstdin\fR.\&
+.PP
+.SH SEE ALSO
+.PP
+\fIoddmu\fR(1), \fIoddmu-missing\fR(1)
+.PP
+.SH AUTHORS
+.PP
+Maintained by Alex Schroeder <alex@gnu.\&org>.\&

man/oddmu-links.1.txt

@@ -0,0 +1,22 @@
+ODDMU-LINKS(1)
+
+# NAME
+
+oddmu-links - list outgoing links for pages
+
+# SYNOPSIS
+
+*oddmu links*  _page names..._
+
+# DESCRIPTION
+
+The "links" subcommand lists outgoing links for one or more Markdown files. Use
+"-" as the page name if you want to read Markdown from *stdin*.
+
+# SEE ALSO
+
+_oddmu_(1), _oddmu-missing_(1)
+
+# AUTHORS
+
+Maintained by Alex Schroeder <alex@gnu.org>.

man/oddmu-list.1

@@ -5,11 +5,11 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-LIST" "1" "2024-02-24"
+.TH "ODDMU-LIST" "1" "2025-08-31"
 .PP
 .SH NAME
 .PP
-oddmu-list - list page names and titles from the command-line
+oddmu-list - list page names and titles
 .PP
 .SH SYNOPSIS
 .PP
@@ -31,7 +31,7 @@ subdirectory are listed, and the directory is stripped from the page name.\&
 Limit the list to a particular directory.\&
 .PP
 .RE
-.SH EXAMPLE
+.SH EXAMPLES
 .PP
 Create list of links to pages in the "dad" directory, filter it for date pages
 (starting with "2"), format it as a list of links and sort in reverse order.\&

man/oddmu-list.1.txt

@@ -2,7 +2,7 @@ ODDMU-LIST(1)
 
 # NAME
 
-oddmu-list - list page names and titles from the command-line
+oddmu-list - list page names and titles
 
 # SYNOPSIS
 
@@ -22,7 +22,7 @@ subdirectory are listed, and the directory is stripped from the page name.
 *-dir* _string_
 	Limit the list to a particular directory.
 
-# EXAMPLE
+# EXAMPLES
 
 Create list of links to pages in the "dad" directory, filter it for date pages
 (starting with "2"), format it as a list of links and sort in reverse order.

man/oddmu-missing.1

@@ -5,11 +5,11 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-MISSING" "1" "2024-02-17"
+.TH "ODDMU-MISSING" "1" "2024-08-29"
 .PP
 .SH NAME
 .PP
-oddmu-missing - list missing pages from the command-line
+oddmu-missing - list missing pages
 .PP
 .SH SYNOPSIS
 .PP
@@ -26,7 +26,7 @@ that start with a slash "/" and links that start with a known URL schema
 .PP
 Notably, links that start with ".\&.\&/" are reported as missing.\&
 .PP
-.SH EXAMPLE
+.SH EXAMPLES
 .PP
 Looking for broken links:
 .PP

man/oddmu-missing.1.txt

@@ -2,7 +2,7 @@ ODDMU-MISSING(1)
 
 # NAME
 
-oddmu-missing - list missing pages from the command-line
+oddmu-missing - list missing pages
 
 # SYNOPSIS
 
@@ -19,7 +19,7 @@ that start with a slash "/" and links that start with a known URL schema
 
 Notably, links that start with "../" are reported as missing.
 
-# EXAMPLE
+# EXAMPLES
 
 Looking for broken links:
 

man/oddmu-nginx.5

@@ -5,29 +5,29 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-NGINX" "5" "2024-02-19"
+.TH "ODDMU-NGINX" "5" "2025-07-16"
 .PP
 .SH NAME
 .PP
-oddmu-nginx - how to setup Nginx as a reverse proxy for Oddmu
+oddmu-nginx - how to setup nginx as a reverse proxy for Oddmu
 .PP
-.SS DESCRIPTION
+.SH DESCRIPTION
 .PP
 The oddmu program serves the current working directory as a wiki on port 8080.\&
 This is an unpriviledged port so an ordinary user account can do this.\&
 .PP
-This page explains how to setup NGINX on Debian to act as a reverse proxy for
-Oddmu.\& Once this is done, you can use NGINX to provide HTTPS, request users to
+This page explains how to setup nginx on Debian to act as a reverse proxy for
+Oddmu.\& Once this is done, you can use nginx to provide HTTPS, request users to
 authenticate themselves, and so on.\&
 .PP
-.SS CONFIGURATION
+.SH CONFIGURATION
 .PP
 The site is defined in "/etc/nginx/sites-available/default", in the \fIserver\fR
 section.\& Add a new \fIlocation\fR section after the existing \fIlocation\fR section:
 .PP
 .nf
 .RS 4
-location ~ ^/(view|diff|edit|save|add|append|upload|drop|search|archive)/ {
+location ~ ^/(view|preview|diff|edit|save|add|append|upload|drop|search|archive)/ {
         proxy_pass http://localhost:8080;
 }
 .fi
@@ -38,6 +38,12 @@ get passed on to Oddmu.\& They are essentially disabled.\& Somebody on the same
 machine pointing their browser at http://localhost:8080/ directly would still
 have access to all the actions, of course.\&
 .PP
+.SS Access
+.PP
+Access control is not part of Oddmu.\& By default, the wiki is editable by all.\&
+This is most likely not what you want unless you'\&re running it stand-alone,
+unconnected to the Internet – a personal memex on your laptop, for example.\&
+.PP
 To restrict access to some actions, use two different \fIlocation\fR sections:
 .PP
 .nf
@@ -73,6 +79,49 @@ alex:$1$DOwphABk$W4VmR9p8t2\&.htxF6ctXHX\&.
 .fi
 .RE
 .PP
+These instructions create user accounts with passwords just for Oddmu.\&
+These users are not real users on the web server and don'\&t have access to a
+shell, mail, or any other service.\&
+.PP
+.SS Using a Unix-domain Socket
+.PP
+Instead of having Oddmu listen on a TCP port, you can have it listen on a
+Unix-domain socket.\& This requires socket activation.\& An example of configuring
+the service is given in \fIoddmu.\&service\fR(5).\&
+.PP
+On the nginx side, you can proxy to the socket using an \fIupstream\fR section.\& This
+sends all requests to the socket.\& Use the upstream name as the server name for
+\fIproxy_pass\fR.\& Add something like the configuration below to your existing nginx
+server configuration.\& On a Debian system, that'\&d be in
+"/etc/nginx/sites-available/default".\&
+.PP
+.nf
+.RS 4
+location ~ ^/(view|preview|diff|edit|save|add|append|upload|drop|search|archive)/ {
+  proxy_pass http://unix:/run/oddmu/oddmu\&.sock:;
+}
+.fi
+.RE
+.PP
+Reload the configuration:
+.PP
+.nf
+.RS 4
+sudo systemd reload nginx
+.fi
+.RE
+.PP
+Now, all traffic between the web server and the wiki goes over the socket at
+"/run/oddmu/oddmu.\&sock".\&
+.PP
+To test it on the command-line, use a tool like \fIcurl(1)\fR.\&
+.PP
+.nf
+.RS 4
+curl http://localhost/view/index
+.fi
+.RE
+.PP
 .SH SEE ALSO
 .PP
 \fIoddmu\fR(1), \fIoddmu-apache\fR(5)

man/oddmu-nginx.5.txt

@@ -2,24 +2,24 @@ ODDMU-NGINX(5)
 
 # NAME
 
-oddmu-nginx - how to setup Nginx as a reverse proxy for Oddmu
+oddmu-nginx - how to setup nginx as a reverse proxy for Oddmu
 
-## DESCRIPTION
+# DESCRIPTION
 
 The oddmu program serves the current working directory as a wiki on port 8080.
 This is an unpriviledged port so an ordinary user account can do this.
 
-This page explains how to setup NGINX on Debian to act as a reverse proxy for
-Oddmu. Once this is done, you can use NGINX to provide HTTPS, request users to
+This page explains how to setup nginx on Debian to act as a reverse proxy for
+Oddmu. Once this is done, you can use nginx to provide HTTPS, request users to
 authenticate themselves, and so on.
 
-## CONFIGURATION
+# CONFIGURATION
 
 The site is defined in "/etc/nginx/sites-available/default", in the _server_
 section. Add a new _location_ section after the existing _location_ section:
 
 ```
-location ~ ^/(view|diff|edit|save|add|append|upload|drop|search|archive)/ {
+location ~ ^/(view|preview|diff|edit|save|add|append|upload|drop|search|sitemap|archive)/ {
         proxy_pass http://localhost:8080;
 }
 ```
@@ -29,6 +29,12 @@ get passed on to Oddmu. They are essentially disabled. Somebody on the same
 machine pointing their browser at http://localhost:8080/ directly would still
 have access to all the actions, of course.
 
+## Access
+
+Access control is not part of Oddmu. By default, the wiki is editable by all.
+This is most likely not what you want unless you're running it stand-alone,
+unconnected to the Internet – a personal memex on your laptop, for example.
+
 To restrict access to some actions, use two different _location_ sections:
 
 ```
@@ -58,6 +64,43 @@ using this password:
 alex:$1$DOwphABk$W4VmR9p8t2.htxF6ctXHX.
 ```
 
+These instructions create user accounts with passwords just for Oddmu.
+These users are not real users on the web server and don't have access to a
+shell, mail, or any other service.
+
+## Using a Unix-domain Socket
+
+Instead of having Oddmu listen on a TCP port, you can have it listen on a
+Unix-domain socket. This requires socket activation. An example of configuring
+the service is given in _oddmu.service_(5).
+
+On the nginx side, you can proxy to the socket using an _upstream_ section. This
+sends all requests to the socket. Use the upstream name as the server name for
+_proxy_pass_. Add something like the configuration below to your existing nginx
+server configuration. On a Debian system, that'd be in
+"/etc/nginx/sites-available/default".
+
+```
+location ~ ^/(view|preview|diff|edit|save|add|append|upload|drop|search|sitemap|archive)/ {
+  proxy_pass http://unix:/run/oddmu/oddmu.sock:;
+}
+```
+
+Reload the configuration:
+
+```
+sudo systemd reload nginx
+```
+
+Now, all traffic between the web server and the wiki goes over the socket at
+"/run/oddmu/oddmu.sock".
+
+To test it on the command-line, use a tool like _curl(1)_.
+
+```
+curl http://localhost/view/index
+```
+
 # SEE ALSO
 
 _oddmu_(1), _oddmu-apache_(5)

man/oddmu-notify.1

@@ -5,7 +5,7 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-NOTIFY" "1" "2024-02-17"
+.TH "ODDMU-NOTIFY" "1" "2025-04-05"
 .PP
 .SH NAME
 .PP
@@ -17,8 +17,8 @@ oddmu-notify - add links to changes.\&md, index.\&md, and hashtag pages
 .PP
 .SH DESCRIPTION
 .PP
-The "notify" subcommand takes all the page names provided (without the ".\&md"
-extension) and adds links to it from other pages.\&
+The "notify" subcommand takes all the Markdown files provided and adds links to
+these pages from other pages.\&
 .PP
 A new link is added to the \fBchanges\fR page in the current directory if it doesn'\&t
 exist.\& The current date of the machine Oddmu is running on is used as the
@@ -49,7 +49,7 @@ using the asterisk ('\&*'\&).\& If no such list exists, a new one is started at
 bottom of the page.\& This allows you to have a different unnumbered list further
 up on the page, as long as it uses the minus for items ('\&-'\&).\&
 .PP
-.SH EXAMPLE
+.SH EXAMPLES
 .PP
 After writing the file "2023-11-05-climate.\&md" containing the hashtag
 "#Climate", add links to it from "index.\&md", "changes.\&md", and "Climate.\&md" (if
@@ -57,7 +57,7 @@ it exists):
 .PP
 .nf
 .RS 4
-oddmu notify 2023-11-05-climate
+oddmu notify 2023-11-05-climate\&.md
 .fi
 .RE
 .PP

man/oddmu-notify.1.txt

@@ -10,8 +10,8 @@ oddmu-notify - add links to changes.md, index.md, and hashtag pages
 
 # DESCRIPTION
 
-The "notify" subcommand takes all the page names provided (without the ".md"
-extension) and adds links to it from other pages.
+The "notify" subcommand takes all the Markdown files provided and adds links to
+these pages from other pages.
 
 A new link is added to the *changes* page in the current directory if it doesn't
 exist. The current date of the machine Oddmu is running on is used as the
@@ -42,14 +42,14 @@ using the asterisk ('\*'). If no such list exists, a new one is started at the
 bottom of the page. This allows you to have a different unnumbered list further
 up on the page, as long as it uses the minus for items ('-').
 
-# EXAMPLE
+# EXAMPLES
 
 After writing the file "2023-11-05-climate.md" containing the hashtag
 "#Climate", add links to it from "index.md", "changes.md", and "Climate.md" (if
 it exists):
 
 ```
-oddmu notify 2023-11-05-climate
+oddmu notify 2023-11-05-climate.md
 ```
 
 The changes file might look as follows:

man/oddmu-releases.7

@@ -1,20 +1,295 @@
-.\" Generated by scdoc 1.11.3
+.\" Generated by scdoc 1.11.4
 .\" Complete documentation for this program is not available as a GNU info page
 .ie \n(.g .ds Aq \(aq
 .el       .ds Aq '
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-RELEASES" "7" "2024-03-10"
+.TH "ODDMU-RELEASES" "7" "2026-01-01"
 .PP
 .SH NAME
 .PP
-oddmu-releases - what'\&s new in this releases?\&
+oddmu-releases - what'\&s new?\&
 .PP
 .SH DESCRIPTION
 .PP
 This page lists user-visible features and template changes to consider.\&
 .PP
+.SS 1.20 (unreleased)
+.PP
+Add -shrink and -glob options to the \fIstatic\fR subcommand.\&
+.PP
+Some tools were used to check the code (goimports, golint, gocritic).\&
+Unfortunately, the resulting changes necessitates a change in the templates
+("feed.\&html", "preview.\&html", "search.\&html", "static.\&html", "view.\&html"):
+"{{.\&Html}}" must be changed to "{{.\&HTML}}".\& One way to do this:
+.PP
+.nf
+.RS 4
+find \&. -regex \&'\&.*/(feed|preview|search|static|view).html\&' 
+  -exec sed -i~ \&'s/{{\&.Html}}/{{\&.HTML}}/g\&' \&'{}\&' \&'+\&'
+.fi
+.RE
+.PP
+The \fIfeed\fR subcommand uses the page URL to extract a pubDate instead of relying
+on the file'\&s last modified time.\& For a complete feed (an archive), the last
+modified time is less important.\&
+.PP
+The feed for the index page is paginated, like other feeds.\& But since it grows
+faster than any of the feeds for hashtag pages, presumably, an extra features
+was added: on the first and on the last page of the feed, a link to the next or
+the previous year is added, if such a page exists.\& This works if at beginning of
+every year, you move all the entries on to a dedicated year page.\& You need to
+add the necessary links to the feed template ("feed.\&html").\& See
+\fIoddmu-templates\fR(5) for more.\&
+.PP
+Example:
+.PP
+.nf
+.RS 4
+<rss xmlns:atom="http://www\&.w3\&.org/2005/Atom" version="2\&.0"
+     xmlns:fh="http://purl\&.org/syndication/history/1\&.0">
+  …
+  {{if \&.PrevYear}}
+    <atom:link href="https://example\&.org/view/{{\&.Dir}}{{\&.PrevYear}}\&.rss?n={{\&.N}}"
+     rel="previous" type="application/rss+xml"/>
+  {{end}}
+  {{if \&.NextYear}}
+    <atom:link href="https://example\&.org/view/{{\&.Dir}}{{\&.NextYear}}\&.rss?n={{\&.N}}"
+     rel="next" type="application/rss+xml"/>
+  {{end}}
+  …
+.fi
+.RE
+.PP
+.SS 1.19 (2025)
+.PP
+Add \fIfeed\fR subcommand.\& This produces a "complete" feed.\&
+.PP
+Add feed pagination for the \fIfeed\fR action.\& This produces a "paginated" feed.\&
+.PP
+See RFC 5005 for more information.\&
+.PP
+If you like the idea of feed pagination (not a given since that also helps bots
+scrape your site!\&) you need to add the necessary links to the feed template
+("feed.\&html").\& See \fIoddmu-templates\fR(5) for more.\&
+.PP
+Example, adding the feed history namespace:
+.PP
+.nf
+.RS 4
+<rss xmlns:atom="http://www\&.w3\&.org/2005/Atom" version="2\&.0"
+     xmlns:fh="http://purl\&.org/syndication/history/1\&.0">
+  …
+  {{if \&.From}}
+  <atom:link rel="previous" type="application/rss+xml"
+   href="https://example\&.org/view/{{\&.Path}}\&.rss?from={{\&.Prev}}&amp;n={{\&.N}}"/>
+  {{end}}
+  {{if \&.Next}}
+  <atom:link rel="next" type="application/rss+xml"
+   href="https://example\&.org/view/{{\&.Path}}\&.rss?from={{\&.Next}}&amp;n={{\&.N}}"/>
+  {{end}}
+  {{if \&.Complete}}<fh:complete/>{{end}}
+  …
+.fi
+.RE
+.PP
+.SS 1.18 (2025)
+.PP
+The \fIhashtags\fR gained the option of checking and fixing the hashtag pages by
+adding missing links to tagged blog pages.\& See \fIoddmu-hashtags\fR(1) for more.\&
+.PP
+In an effort to remove features that can be handled by the web server, the
+\fIlist\fR, \fIdelete\fR and \fIrename\fR actions were removed again.\& See \fIoddmu-webdav\fR(5)
+for a better solution.\&
+.PP
+You probably need to remove a sentence linking to the list action from the
+upload template ("upload.\&html").\&
+.PP
+.SS 1.17 (2025)
+.PP
+You need to update the upload template ("upload.\&html").\& Many things have
+changed!\& See \fIoddmu-templates\fR(5) for more.\&
+.PP
+You probably want to ensure that the upload link on the view template
+("view.\&html") and others, if you added it, has a \fIfilename\fR and \fIpagename\fR
+parameters.\&
+.PP
+Example:
+.PP
+.nf
+.RS 4
+<a href="/upload/{{\&.Dir}}?filename={{\&.Base}}-1\&.jpg&pagename={{\&.Base}}">Upload</a>
+.fi
+.RE
+.PP
+You need to change {{.\&Name}} to {{.\&Path}} when it is used in URLs, in the list
+template ("list.\&html").\& If you don'\&t do this, file deleting and rename may not
+work on files containing a comma, a semicolon, a questionmark or a hash
+character.\& This fix was necessary because URLs for files containing a
+questionmark or a hash character would end the path at this character and treat
+the rest as a query parameter or fragment, respectively.\&
+.PP
+Updated the example themes.\& Some of my sites got a text area that tries to take
+all the vertical space available.\& This is great for monitors in portrait mode.\&
+.PP
+\fIlist\fR action now skips dot files.\&
+.PP
+.SS 1.16 (2025)
+.PP
+Add support for WebP images for uploading and resizing.\&
+.PP
+You need to change {{.\&Name}} to {{.\&Path}} in HTML templates where pages are
+concerned.\& If you don'\&t do this, your page names (i.\&e.\& filenames for pages) may
+not include a comma, a semicolon, a questionmark or a hash sign.\& This fix was
+necessary because file uploads of filenames with non-ASCII characters ended up
+double-encoded.\&
+.PP
+Note that on the "list.\&html" template, {{.\&Name}} refers to file instead of a
+page and File.\&Path() isn'\&t implemented, yet.\& This is fixed in the next release.\&
+.PP
+Improved the example themes.\& The chat theme got better list styling and better
+upload functionality with automatic "add" button; the plain theme got rocket
+links via JavaScript; the alexschroeder.\&ch theme got a preview button and better
+image support for upload and search; the transjovian.\&org theme got better image
+support for upload.\&
+.PP
+Switch the \fIhtml\fR, \fIlink\fR, \fInotify\fR and \fItoc\fR subcommand to take filenames
+(including the `.\&md` suffix) instead of page names (without the `.\&md` suffix).\&
+.PP
+.SS 1.15 (2025)
+.PP
+Fix the hashtag detection.\& This was necessary to cut down on the many false
+positives.\& They were most obvious with the \fIhashtags\fR subcommand.\& Now the
+Markdown parser is used at startup to index the pages, making startup slower
+(about twice as long with my blog).\& The Markdown parser is also used to parse
+search terms (where it makes little difference).\&
+.PP
+Fix the timestamp for backup files.\& This was necessary because the diff didn'\&t
+work as intended.\&
+.PP
+.SS 1.14 (2024)
+.PP
+Add \fIlist\fR, \fIdelete\fR and \fIrename\fR actions.\&
+.PP
+This requires a change to your web server setup if you are using a it as a
+reverse proxy because you need to pass these new actions along to Oddmu,
+together with appropriate permission checks.\&
+.PP
+See \fIoddmu-apache\fR(5) or \fIoddmu-nginx\fR(5) for example.\&
+.PP
+In addition to that, you might want a link to the \fIlist\fR action from one of the
+existing templates.\& For example, from upload.\&html:
+.PP
+.nf
+.RS 4
+<p>You can rename and delete files <a href="/list/{{\&.Dir}}">from the file list</a>\&.
+.fi
+.RE
+.PP
+The following line was added to the "preview.\&html" and "edit.\&html" template:
+.PP
+.nf
+.RS 4
+<base href="/view/{{\&.Dir}}">
+.fi
+.RE
+.PP
+You might want to do that as well, if you have your own.\& Without this, links in
+the preview cannot be followed as they all point to \fB/preview\fR instead of
+\fB/view\fR and the link to the list of changes cannot be followed from the edit
+page: it leads to editing the list of changes.\&
+.PP
+.SS 1.13 (2024)
+.PP
+Add \fIexport\fR subcommand.\&
+.PP
+.SS 1.12 (2024)
+.PP
+Add \fIhashtags\fR, \fIlinks\fR and \fItoc\fR subcommands.\&
+.PP
+Support searching for multiple words using all sorts of quotation marks.\& That
+means that it is now impossible to search for words that begin with such a
+quotation mark.\&
+.PP
+These are the quotation marks currently supported: '\&foo'\& "foo" ‘foo’ ‚foo‘ ’foo’
+“foo” „foo“ ”foo” «foo» »foo« ‹foo› ›foo‹ ｢foo｣ 「ｆｏｏ」 『ｆｏｏ』 – any such
+quoted text is searched as-is, including whitespace.\&
+.PP
+Add loading="lazy" for images in search.\&html
+.PP
+If you want to take advantage of this, you'\&ll need to adapt your "search.\&html"
+template accordingly.\& Use like this, for example:
+.PP
+.nf
+.RS 4
+{{range \&.Items}}
+<article lang="{{\&.Language}}">
+  <p><a class="result" href="/view/{{\&.Name}}">{{\&.Title}}</a>
+    <span class="score">{{\&.Score}}</span></p>
+  <blockquote>{{\&.Html}}</blockquote>
+  {{range \&.Images}}
+  <p class="image"><a href="/view/{{\&.Name}}"><img loading="lazy" src="/view/{{\&.Name}}"></a><br/>{{\&.Html}}
+  {{end}}
+</article>
+{{end}}
+.fi
+.RE
+.PP
+.SS 1.11 (2024)
+.PP
+The HTML renderer option for smart fractions support was removed.\& Therefore, 1/8
+no longer turns into ⅛ or ¹⁄₈.\& The benefit is that something like "doi:
+10.\&1017/9781009157926.\&007" doesn'\&t turn into "doi: 10.\&1017⁄9781009157926.\&007".\&
+If you need to change this, take a look at the \fIwikiRenderer\fR function.\&
+.PP
+When search terms (excluding hashtags) match the alt text given for an image,
+that image is part of the data available to the search template.\&
+.PP
+If you want to take advantage of this, you'\&ll need to adapt your "search.\&html"
+template accordingly.\& Use like this, for example:
+.PP
+.nf
+.RS 4
+{{range \&.Items}}
+<article lang="{{\&.Language}}">
+  <p><a class="result" href="/view/{{\&.Name}}">{{\&.Title}}</a>
+    <span class="score">{{\&.Score}}</span></p>
+  <blockquote>{{\&.Html}}</blockquote>
+  {{range \&.Images}}
+  <p class="image"><a href="/view/{{\&.Name}}"><img class="last" src="/view/{{\&.Name}}"></a><br/>{{\&.Html}}
+  {{end}}
+</article>
+{{end}}
+.fi
+.RE
+.PP
+.SS 1.10 (2024)
+.PP
+You can now preview edits instead of saving them.\&
+.PP
+.PD 0
+.IP \(bu 4
+a preview button was added to "edit.\&html"
+.IP \(bu 4
+a new "preview.\&html" was added
+.PD
+.PP
+If you want to take advantage of this, you'\&ll need to adapt your templates
+accordingly.\& The "preview.\&html" template is a mix of "view.\&html" and
+"edit.\&html".\&
+.PP
+There is an optional change to make to copies of \fIupload.\&html\fR if you upload
+multiple images at a time.\& Instead of showing just the link to the last upload,
+you can now show the link (and the images or links, if you want to) to all the
+files uploaded.\& Use like this, for example:
+.PP
+.nf
+.RS 4
+Links:<tt>{{range \&.Actual}}<br>![]({{\&.}}){{end}}</tt>
+.fi
+.RE
+.PP
 .SS 1.9 (2024)
 .PP
 There is a change to make to copies of \fIupload.\&html\fR if subdirectories are being

man/oddmu-releases.7.txt

@@ -2,12 +2,265 @@ ODDMU-RELEASES(7)
 
 # NAME
 
-oddmu-releases - what's new in this releases?
+oddmu-releases - what's new?
 
 # DESCRIPTION
 
 This page lists user-visible features and template changes to consider.
 
+## 1.20 (unreleased)
+
+Add -shrink and -glob options to the _static_ subcommand.
+
+Some tools were used to check the code (goimports, golint, gocritic).
+Unfortunately, the resulting changes necessitates a change in the templates
+("feed.html", "preview.html", "search.html", "static.html", "view.html"):
+"{{.Html}}" must be changed to "{{.HTML}}". One way to do this:
+
+```
+find . -regex '.*/\(feed\|preview\|search\|static\|view\)\.html' \
+  -exec sed -i~ 's/{{.Html}}/{{.HTML}}/g' '{}' '+'
+```
+
+The _feed_ subcommand uses the page URL to extract a pubDate instead of relying
+on the file's last modified time. For a complete feed (an archive), the last
+modified time is less important.
+
+The feed for the index page is paginated, like other feeds. But since it grows
+faster than any of the feeds for hashtag pages, presumably, an extra features
+was added: on the first and on the last page of the feed, a link to the next or
+the previous year is added, if such a page exists. This works if at beginning of
+every year, you move all the entries on to a dedicated year page. You need to
+add the necessary links to the feed template ("feed.html"). See
+_oddmu-templates_(5) for more.
+
+Example:
+
+```
+<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"
+     xmlns:fh="http://purl.org/syndication/history/1.0">
+  …
+  {{if .PrevYear}}
+    <atom:link href="https://example.org/view/{{.Dir}}{{.PrevYear}}.rss?n={{.N}}"
+     rel="previous" type="application/rss+xml"/>
+  {{end}}
+  {{if .NextYear}}
+    <atom:link href="https://example.org/view/{{.Dir}}{{.NextYear}}.rss?n={{.N}}"
+     rel="next" type="application/rss+xml"/>
+  {{end}}
+  …
+```
+
+## 1.19 (2025)
+
+Add _feed_ subcommand. This produces a "complete" feed.
+
+Add feed pagination for the _feed_ action. This produces a "paginated" feed.
+
+See RFC 5005 for more information.
+
+If you like the idea of feed pagination (not a given since that also helps bots
+scrape your site!) you need to add the necessary links to the feed template
+("feed.html"). See _oddmu-templates_(5) for more.
+
+Example, adding the feed history namespace:
+
+```
+<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"
+     xmlns:fh="http://purl.org/syndication/history/1.0">
+  …
+  {{if .From}}
+  <atom:link rel="previous" type="application/rss+xml"
+   href="https://example.org/view/{{.Path}}.rss?from={{.Prev}}&amp;n={{.N}}"/>
+  {{end}}
+  {{if .Next}}
+  <atom:link rel="next" type="application/rss+xml"
+   href="https://example.org/view/{{.Path}}.rss?from={{.Next}}&amp;n={{.N}}"/>
+  {{end}}
+  {{if .Complete}}<fh:complete/>{{end}}
+  …
+```
+
+## 1.18 (2025)
+
+The _hashtags_ gained the option of checking and fixing the hashtag pages by
+adding missing links to tagged blog pages. See _oddmu-hashtags_(1) for more.
+
+In an effort to remove features that can be handled by the web server, the
+_list_, _delete_ and _rename_ actions were removed again. See _oddmu-webdav_(5)
+for a better solution.
+
+You probably need to remove a sentence linking to the list action from the
+upload template ("upload.html").
+
+## 1.17 (2025)
+
+You need to update the upload template ("upload.html"). Many things have
+changed! See _oddmu-templates_(5) for more.
+
+You probably want to ensure that the upload link on the view template
+("view.html") and others, if you added it, has a _filename_ and _pagename_
+parameters.
+
+Example:
+
+```
+<a href="/upload/{{.Dir}}?filename={{.Base}}-1.jpg&pagename={{.Base}}">Upload</a>
+```
+
+You need to change {{.Name}} to {{.Path}} when it is used in URLs, in the list
+template ("list.html"). If you don't do this, file deleting and rename may not
+work on files containing a comma, a semicolon, a questionmark or a hash
+character. This fix was necessary because URLs for files containing a
+questionmark or a hash character would end the path at this character and treat
+the rest as a query parameter or fragment, respectively.
+
+Updated the example themes. Some of my sites got a text area that tries to take
+all the vertical space available. This is great for monitors in portrait mode.
+
+_list_ action now skips dot files.
+
+## 1.16 (2025)
+
+Add support for WebP images for uploading and resizing.
+
+You need to change {{.Name}} to {{.Path}} in HTML templates where pages are
+concerned. If you don't do this, your page names (i.e. filenames for pages) may
+not include a comma, a semicolon, a questionmark or a hash sign. This fix was
+necessary because file uploads of filenames with non-ASCII characters ended up
+double-encoded.
+
+Note that on the "list.html" template, {{.Name}} refers to file instead of a
+page and File.Path() isn't implemented, yet. This is fixed in the next release.
+
+Improved the example themes. The chat theme got better list styling and better
+upload functionality with automatic "add" button; the plain theme got rocket
+links via JavaScript; the alexschroeder.ch theme got a preview button and better
+image support for upload and search; the transjovian.org theme got better image
+support for upload.
+
+Switch the _html_, _link_, _notify_ and _toc_ subcommand to take filenames
+(including the `.md` suffix) instead of page names (without the `.md` suffix).
+
+## 1.15 (2025)
+
+Fix the hashtag detection. This was necessary to cut down on the many false
+positives. They were most obvious with the _hashtags_ subcommand. Now the
+Markdown parser is used at startup to index the pages, making startup slower
+(about twice as long with my blog). The Markdown parser is also used to parse
+search terms (where it makes little difference).
+
+Fix the timestamp for backup files. This was necessary because the diff didn't
+work as intended.
+
+## 1.14 (2024)
+
+Add _list_, _delete_ and _rename_ actions.
+
+This requires a change to your web server setup if you are using a it as a
+reverse proxy because you need to pass these new actions along to Oddmu,
+together with appropriate permission checks.
+
+See _oddmu-apache_(5) or _oddmu-nginx_(5) for example.
+
+In addition to that, you might want a link to the _list_ action from one of the
+existing templates. For example, from upload.html:
+
+```
+<p>You can rename and delete files <a href="/list/{{.Dir}}">from the file list</a>.
+```
+
+The following line was added to the "preview.html" and "edit.html" template:
+
+```
+<base href="/view/{{.Dir}}">
+```
+
+You might want to do that as well, if you have your own. Without this, links in
+the preview cannot be followed as they all point to */preview* instead of
+*/view* and the link to the list of changes cannot be followed from the edit
+page: it leads to editing the list of changes.
+
+## 1.13 (2024)
+
+Add _export_ subcommand.
+
+## 1.12 (2024)
+
+Add _hashtags_, _links_ and _toc_ subcommands.
+
+Support searching for multiple words using all sorts of quotation marks. That
+means that it is now impossible to search for words that begin with such a
+quotation mark.
+
+These are the quotation marks currently supported: 'foo' "foo" ‘foo’ ‚foo‘ ’foo’
+“foo” „foo“ ”foo” «foo» »foo« ‹foo› ›foo‹ ｢foo｣ 「ｆｏｏ」 『ｆｏｏ』 – any such
+quoted text is searched as-is, including whitespace.
+
+Add loading="lazy" for images in search.html
+
+If you want to take advantage of this, you'll need to adapt your "search.html"
+template accordingly. Use like this, for example:
+
+```
+{{range .Items}}
+<article lang="{{.Language}}">
+  <p><a class="result" href="/view/{{.Name}}">{{.Title}}</a>
+    <span class="score">{{.Score}}</span></p>
+  <blockquote>{{.Html}}</blockquote>
+  {{range .Images}}
+  <p class="image"><a href="/view/{{.Name}}"><img loading="lazy" src="/view/{{.Name}}"></a><br/>{{.Html}}
+  {{end}}
+</article>
+{{end}}
+```
+
+## 1.11 (2024)
+
+The HTML renderer option for smart fractions support was removed. Therefore, 1/8
+no longer turns into ⅛ or ¹⁄₈. The benefit is that something like "doi:
+10.1017/9781009157926.007" doesn't turn into "doi: 10.1017⁄9781009157926.007".
+If you need to change this, take a look at the _wikiRenderer_ function.
+
+When search terms (excluding hashtags) match the alt text given for an image,
+that image is part of the data available to the search template.
+
+If you want to take advantage of this, you'll need to adapt your "search.html"
+template accordingly. Use like this, for example:
+
+```
+{{range .Items}}
+<article lang="{{.Language}}">
+  <p><a class="result" href="/view/{{.Name}}">{{.Title}}</a>
+    <span class="score">{{.Score}}</span></p>
+  <blockquote>{{.Html}}</blockquote>
+  {{range .Images}}
+  <p class="image"><a href="/view/{{.Name}}"><img class="last" src="/view/{{.Name}}"></a><br/>{{.Html}}
+  {{end}}
+</article>
+{{end}}
+```
+
+## 1.10 (2024)
+
+You can now preview edits instead of saving them.
+
+- a preview button was added to "edit.html"
+- a new "preview.html" was added
+
+If you want to take advantage of this, you'll need to adapt your templates
+accordingly. The "preview.html" template is a mix of "view.html" and
+"edit.html".
+
+There is an optional change to make to copies of _upload.html_ if you upload
+multiple images at a time. Instead of showing just the link to the last upload,
+you can now show the link (and the images or links, if you want to) to all the
+files uploaded. Use like this, for example:
+
+```
+Links:<tt>{{range .Actual}}<br>![]({{.}}){{end}}</tt>
+```
+
 ## 1.9 (2024)
 
 There is a change to make to copies of _upload.html_ if subdirectories are being

man/oddmu-replace.1

@@ -5,11 +5,11 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-REPLACE" "1" "2024-02-17"
+.TH "ODDMU-REPLACE" "1" "2025-03-05"
 .PP
 .SH NAME
 .PP
-oddmu-replace - replace text in Oddmu pages from the command-line
+oddmu-replace - replace text in Oddmu pages
 .PP
 .SH SYNOPSIS
 .PP
@@ -36,13 +36,13 @@ the term is a regular expression and the replacement can contain
 backreferences ($1, $2, $3, etc.\&) to capture groups.\&
 .PP
 .RE
-.SH EXAMPLE
+.SH EXAMPLES
 .PP
 Replace "Oddmu" in the Markdown files of the current directory:
 .PP
 .nf
 .RS 4
-oddmu replace Oddmu Oddµ
+oddmu replace Oddmu Oddμ
 .fi
 .RE
 .PP

man/oddmu-replace.1.txt

@@ -2,7 +2,7 @@ ODDMU-REPLACE(1)
 
 # NAME
 
-oddmu-replace - replace text in Oddmu pages from the command-line
+oddmu-replace - replace text in Oddmu pages
 
 # SYNOPSIS
 
@@ -25,12 +25,12 @@ the current directory and its subdirectories.
 	the term is a regular expression and the replacement can contain
 	backreferences ($1, $2, $3, etc.) to capture groups.
 
-# EXAMPLE
+# EXAMPLES
 
 Replace "Oddmu" in the Markdown files of the current directory:
 
 ```
-oddmu replace Oddmu Oddµ
+oddmu replace Oddmu Oddμ
 ```
 
 Result:

man/oddmu-search.1

@@ -5,11 +5,11 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-SEARCH" "1" "2024-02-17"
+.TH "ODDMU-SEARCH" "1" "2025-03-05"
 .PP
 .SH NAME
 .PP
-oddmu-search - search the Oddmu pages from the command-line
+oddmu-search - search the Oddmu pages
 .PP
 .SH SYNOPSIS
 .PP
@@ -17,8 +17,9 @@ oddmu-search - search the Oddmu pages from the command-line
 .PP
 .SH DESCRIPTION
 .PP
-The "search" subcommand searches the Markdown files in the current
-directory.\&
+The "search" subcommand resursively searches the Markdown files in the current
+directory tree.\& That is, the files in the current directory and all its child
+directories are searched.\&
 .PP
 Be default, this returns a Markdown-formatted list suitable for pasting into
 Oddmu pages.\&
@@ -26,6 +27,10 @@ Oddmu pages.\&
 If a directory is provided, only files from the tree starting at that
 subdirectory are listed, and the directory is stripped from the page name.\&
 .PP
+If multiple terms are provided, they are all concatenated into a single,
+space-separated query string.\& That is, searching for the terms A B and the term
+"A B" is equivalent.\&
+.PP
 See \fIoddmu-search\fR(7) for more information of how pages are searched, sorted and
 scored.\&
 .PP
@@ -37,7 +42,7 @@ Limit search to a particular directory.\&
 .RE
 \fB-extract\fR
 .RS 4
-Print search extracts for interactive use from the command-line.\&
+Print search extracts for interactive use
 .RE
 \fB-page\fR \fIn\fR
 .RS 4
@@ -49,22 +54,32 @@ shown.\& This option allows you to view other pages.\&
 Ignore pagination and just print a long list of results.\&
 .PP
 .RE
-.SH EXAMPLE
+.SH EXAMPLES
 .PP
-Search for "oddmu" in the Markdown files of the current directory:
+Search for the two words "Alex" and "Schroeder".\& All of the following are
+equivalent: Alex Schroeder, Schroeder Alex, "Alex Schroeder", "Schroeder Alex".\&
+The ordering of terms does not matter.\&
 .PP
 .nf
 .RS 4
-oddmu search oddmu
+~/src/oddmu $ oddmu search Alex Schroeder
+Search for Alex Schroeder, page 1: 3 results
+* [Alex Schroeder theme](themes/alexschroeder\&.ch/README)
+* [Oddμ: A minimal wiki](README)
+* [Themes](themes/index)
 .fi
 .RE
 .PP
-Result:
+Search for the exact phrase "Alex Schroeder".\& In order to pass the quotes to
+Oddmu, a second level of quotes is required.\& All of the following are
+equivalent: '\&"Alex Schroeder"'\&, "'\&Alex Schroeder'\&", \e"Alex\e Schroeder\e",
+\e"Alex Schroeder\e".\&
 .PP
 .nf
 .RS 4
-Search oddmu: 1 result
-* [Oddµ: A minimal wiki](README) (5)
+~/src/oddmu $ oddmu search "\&'Alex Schroeder\&'"
+Search for \&'Alex Schroeder\&', page 1: 1 result
+* [Alex Schroeder theme](themes/alexschroeder\&.ch/README)
 .fi
 .RE
 .PP

man/oddmu-search.1.txt

@@ -2,7 +2,7 @@ ODDMU-SEARCH(1)
 
 # NAME
 
-oddmu-search - search the Oddmu pages from the command-line
+oddmu-search - search the Oddmu pages
 
 # SYNOPSIS
 
@@ -10,8 +10,9 @@ oddmu-search - search the Oddmu pages from the command-line
 
 # DESCRIPTION
 
-The "search" subcommand searches the Markdown files in the current
-directory.
+The "search" subcommand resursively searches the Markdown files in the current
+directory tree. That is, the files in the current directory and all its child
+directories are searched.
 
 Be default, this returns a Markdown-formatted list suitable for pasting into
 Oddmu pages.
@@ -19,6 +20,10 @@ Oddmu pages.
 If a directory is provided, only files from the tree starting at that
 subdirectory are listed, and the directory is stripped from the page name.
 
+If multiple terms are provided, they are all concatenated into a single,
+space-separated query string. That is, searching for the terms A B and the term
+"A B" is equivalent.
+
 See _oddmu-search_(7) for more information of how pages are searched, sorted and
 scored.
 
@@ -27,26 +32,36 @@ scored.
 *-dir* _string_
 	Limit search to a particular directory.
 *-extract*
-	Print search extracts for interactive use from the command-line.
+	Print search extracts for interactive use
 *-page* _n_
 	Search results are paginated and by default only the first page is
 	shown. This option allows you to view other pages.
 *-all*
 	Ignore pagination and just print a long list of results.
 
-# EXAMPLE
+# EXAMPLES
 
-Search for "oddmu" in the Markdown files of the current directory:
+Search for the two words "Alex" and "Schroeder". All of the following are
+equivalent: Alex Schroeder, Schroeder Alex, "Alex Schroeder", "Schroeder Alex".
+The ordering of terms does not matter.
 
 ```
-oddmu search oddmu
+~/src/oddmu $ oddmu search Alex Schroeder
+Search for Alex Schroeder, page 1: 3 results
+* [Alex Schroeder theme](themes/alexschroeder.ch/README)
+* [Oddμ: A minimal wiki](README)
+* [Themes](themes/index)
 ```
 
-Result:
+Search for the exact phrase "Alex Schroeder". In order to pass the quotes to
+Oddmu, a second level of quotes is required. All of the following are
+equivalent: '"Alex Schroeder"', "'Alex Schroeder'", \\"Alex\\ Schroeder\\",
+\\"Alex Schroeder\\".
 
 ```
-Search oddmu: 1 result
-* [Oddµ: A minimal wiki](README) (5)
+~/src/oddmu $ oddmu search "'Alex Schroeder'"
+Search for 'Alex Schroeder', page 1: 1 result
+* [Alex Schroeder theme](themes/alexschroeder.ch/README)
 ```
 
 # SEE ALSO

man/oddmu-search.7

@@ -5,7 +5,7 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-SEARCH" "7" "2024-02-19"
+.TH "ODDMU-SEARCH" "7" "2025-03-05"
 .PP
 .SH NAME
 .PP
@@ -57,9 +57,9 @@ exactly (without the leading '\&#'\&) is listed first, even if it doesn'\&t cont
 the hashtag.\& It is assumed that this page offers some kind of introduction to
 people searching for the hashtag.\&
 .PP
-Example: When people click on the hashtag "#Oddµ" and a page named "Oddµ" exists
-(in other words, the file "Oddµ.\&md" exists), it is prepended to the results even
-if it doesn'\&t have the hashtag "#Oddµ" and even if it has a title of "Oddµ, a
+Example: When people click on the hashtag "#Oddμ" and a page named "Oddμ" exists
+(in other words, the file "Oddμ.\&md" exists), it is prepended to the results even
+if it doesn'\&t have the hashtag "#Oddμ" and even if it has a title of "Oddμ, a
 minimal wiki" (which wouldn'\&t be an exact match).\&
 .PP
 The score and highlighting of snippets is used to help visitors decide which

man/oddmu-search.7.txt

@@ -44,9 +44,9 @@ exactly (without the leading '#') is listed first, even if it doesn't contain
 the hashtag. It is assumed that this page offers some kind of introduction to
 people searching for the hashtag.
 
-Example: When people click on the hashtag "#Oddµ" and a page named "Oddµ" exists
-(in other words, the file "Oddµ.md" exists), it is prepended to the results even
-if it doesn't have the hashtag "#Oddµ" and even if it has a title of "Oddµ, a
+Example: When people click on the hashtag "#Oddμ" and a page named "Oddμ" exists
+(in other words, the file "Oddμ.md" exists), it is prepended to the results even
+if it doesn't have the hashtag "#Oddμ" and even if it has a title of "Oddμ, a
 minimal wiki" (which wouldn't be an exact match).
 
 The score and highlighting of snippets is used to help visitors decide which

man/oddmu-sitemap.1.txt

@@ -0,0 +1,38 @@
+ODDMU-SITEMAP(1)
+
+# NAME
+
+oddmu-sitemap - print static sitemap.xml
+
+# SYNOPSIS
+
+*oddmu sitemap* [-base URL]
+
+# DESCRIPTION
+
+The "sitemap" subcommand prints the list of all pages in Sitemap format. Oddmu
+already serves the sitemap at the URL "/sitemap.xml" but if you'd prefer to
+provide a static file, use this command and redirect the output to a file called
+"sitemap.xml" in your document root at regular intervals.
+
+If you do this, don't proxy the "/sitemap" URL in the web server configuration.
+
+Your "robots.txt" file, if you have one, should point at the sitemap you
+provide.
+
+# OPTIONS
+
+*-base* _URL_
+	The base URL is something like "https://example.org/view/".
+*-filter* _regexp_
+	A regular expression matching the pages to exclude from the sitemap.
+	This emulates the effect of the ODDMU_FILTER environment variable.
+
+# SEE ALSO
+
+_oddmu_(1), _oddmu-filter_(7), _oddmu-apache_(1), _oddmu-nginx_(1),
+https://www.sitemaps.org/
+
+# AUTHORS
+
+Maintained by Alex Schroeder <alex@gnu.org>.

man/oddmu-static.1

@@ -1,11 +1,11 @@
-.\" Generated by scdoc 1.11.3
+.\" Generated by scdoc 1.11.4
 .\" Complete documentation for this program is not available as a GNU info page
 .ie \n(.g .ds Aq \(aq
 .el       .ds Aq '
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-STATIC" "1" "2024-03-12"
+.TH "ODDMU-STATIC" "1" "2025-12-05"
 .PP
 .SH NAME
 .PP
@@ -13,7 +13,7 @@ oddmu-static - create a static copy of the site
 .PP
 .SH SYNOPSIS
 .PP
-\fBoddmu static\fR \fIdir-name\fR
+\fBoddmu static\fR [\fB\fR-jobs\fB\fR \fIn\fR] [\fB\fR-glob\fB\fR \fIpattern\fR] [\fB\fR-shrink\fB\fR] \fIdir-name\fR
 .PP
 .SH DESCRIPTION
 .PP
@@ -28,22 +28,22 @@ pages get ".\&html" appended.\&
 If a page has a name case-insensitively matching a hashtag, a feed file is
 generated (ending with ".\&rss") if any suitable links are found.\& A suitable link
 for a feed item must appear in a bullet list item using an asterisk ("*").\& If
-no feed items are found, no feed is written.\&
+no feed items are found, no feed is written.\& The feed is limited to the ten most
+recent items.\&
 .PP
 Hidden files and directories (starting with a ".\&") and backup files (ending with
-a "~") are skipped.\&
+a "\(ti") are skipped.\&
 .PP
 All other files are \fIhard linked\fR.\& This is done to save space: on a typical blog
 the images take a lot more space than the text.\& On my blog in 2023 I had 2.\&62
 GiB of JPG files and 0.\&02 GiB of Markdown files.\& There is no point in copying
 all those images, most of the time.\&
 .PP
-Note, however: Hard links cannot span filesystems.\& A hard link is just an extra
-name for the same file.\& This is why the destination directory for the static
-site has to be on same filesystem as the current directory, if it contains any
-other files besides Markdown files.\&
+As hard links cannot span filesystems, all other files are \fIcopied\fR if the
+destination directory for the static site is not on same filesystem as the
+current directory.\&
 .PP
-Furthermore, in-place editing changes the file for all names.\& Avoid editing the
+Note that in-place editing changes the file for all names.\& Avoid editing the
 hard-linked files (anything that'\&s not a HTML file) in the destination
 directory, just to be on the safe side.\& Usually you should be fine, as an editor
 moves the file that'\&s being edited to a backup file and creates a new file.\& But
@@ -51,7 +51,36 @@ then again, who knows.\& A SQLite file, for example, would change in-place, and
 therefore making changes to it in the destination directory would change the
 original, too.\&
 .PP
-.SH EXAMPLE
+.SH OPTIONS
+.PP
+\fB\fR-jobs\fB\fR \fIn\fR
+.RS 4
+By default, two jobs are used to process the files.\& If your machine has
+more cores, you can increase the number of jobs.\&
+.PP
+.RE
+\fB\fR-glob\fB\fR \fIpattern\fR
+.RS 4
+By default, all files are used for the static export.\& You can limit the
+files used by providing a shell file name pattern.\& A "*" matches any
+number of characters; a "?\&" matches exactly one character; "[a-z]"
+matches a character listed, including ranges; "[\(haa-z]" matches a
+character not listed, including ranges; "\e" a backslash escapes the
+following character.\& You must use quotes around the pattern if you are
+using a shell as the shell would otherwise expand the pattern, resulting
+in the error "Exactly one target directory is required".\&
+.PP
+.PP
+.RE
+\fB\fR-shrink\fB\fR
+.RS 4
+By default, images are linked or copied.\& With this option, JPEG, PNG and
+WebP files are scaled down if more than 800 pixels wide and the quality
+is set to 10% for JPEG and WebP files.\& This is \fIvery bad quality\fR but
+the result is that these image files are very small.\&
+.PP
+.RE
+.SH EXAMPLES
 .PP
 Generate a static copy of the site, but only loading language detection for
 German and English, significantly reducing the time it takes to generate the
@@ -89,7 +118,11 @@ speed language determination up.\&
 .PP
 .SH SEE ALSO
 .PP
-\fIoddmu\fR(1), \fIoddmu-templates\fR(5)
+See \fIoddmu\fR(1) and \fIoddmu-templates\fR(5) for general information.\&
+.PP
+See \fIoddmu-html\fR(1) for a subcommand that converts individual pages file to HTML
+and see \fIoddmu-feed\fR(1) for a subcommand that generates feeds for individual
+files.\&
 .PP
 .SH AUTHORS
 .PP

man/oddmu-static.1.txt

@@ -6,7 +6,7 @@ oddmu-static - create a static copy of the site
 
 # SYNOPSIS
 
-*oddmu static* _dir-name_
+*oddmu static* [**-jobs** _n_] [**-glob** _pattern_] [**-shrink**] _dir-name_
 
 # DESCRIPTION
 
@@ -21,7 +21,8 @@ pages get ".html" appended.
 If a page has a name case-insensitively matching a hashtag, a feed file is
 generated (ending with ".rss") if any suitable links are found. A suitable link
 for a feed item must appear in a bullet list item using an asterisk ("\*"). If
-no feed items are found, no feed is written.
+no feed items are found, no feed is written. The feed is limited to the ten most
+recent items.
 
 Hidden files and directories (starting with a ".") and backup files (ending with
 a "~") are skipped.
@@ -31,12 +32,11 @@ the images take a lot more space than the text. On my blog in 2023 I had 2.62
 GiB of JPG files and 0.02 GiB of Markdown files. There is no point in copying
 all those images, most of the time.
 
-Note, however: Hard links cannot span filesystems. A hard link is just an extra
-name for the same file. This is why the destination directory for the static
-site has to be on same filesystem as the current directory, if it contains any
-other files besides Markdown files.
+As hard links cannot span filesystems, all other files are _copied_ if the
+destination directory for the static site is not on same filesystem as the
+current directory.
 
-Furthermore, in-place editing changes the file for all names. Avoid editing the
+Note that in-place editing changes the file for all names. Avoid editing the
 hard-linked files (anything that's not a HTML file) in the destination
 directory, just to be on the safe side. Usually you should be fine, as an editor
 moves the file that's being edited to a backup file and creates a new file. But
@@ -44,7 +44,30 @@ then again, who knows. A SQLite file, for example, would change in-place, and
 therefore making changes to it in the destination directory would change the
 original, too.
 
-# EXAMPLE
+# OPTIONS
+
+**-jobs** _n_
+	By default, two jobs are used to process the files. If your machine has
+	more cores, you can increase the number of jobs.
+
+**-glob** _pattern_
+	By default, all files are used for the static export. You can limit the
+	files used by providing a shell file name pattern. A "\*" matches any
+	number of characters; a "?" matches exactly one character; "[a-z]"
+	matches a character listed, including ranges; "[^a-z]" matches a
+	character not listed, including ranges; "\\" a backslash escapes the
+	following character. You must use quotes around the pattern if you are
+	using a shell as the shell would otherwise expand the pattern, resulting
+	in the error "Exactly one target directory is required".
+	
+
+**-shrink**
+	By default, images are linked or copied. With this option, JPEG, PNG and
+	WebP files are scaled down if more than 800 pixels wide and the quality
+	is set to 10% for JPEG and WebP files. This is _very bad quality_ but
+	the result is that these image files are very small.
+
+# EXAMPLES
 
 Generate a static copy of the site, but only loading language detection for
 German and English, significantly reducing the time it takes to generate the
@@ -80,7 +103,11 @@ speed language determination up.
 
 # SEE ALSO
 
-_oddmu_(1), _oddmu-templates_(5)
+See _oddmu_(1) and _oddmu-templates_(5) for general information.
+
+See _oddmu-html_(1) for a subcommand that converts individual pages file to HTML
+and see _oddmu-feed_(1) for a subcommand that generates feeds for individual
+files.
 
 # AUTHORS
 

man/oddmu-templates.5

@@ -1,11 +1,11 @@
-.\" Generated by scdoc 1.11.3
+.\" Generated by scdoc 1.11.4
 .\" Complete documentation for this program is not available as a GNU info page
 .ie \n(.g .ds Aq \(aq
 .el       .ds Aq '
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU-TEMPLATES" "5" "2024-03-14" "File Formats Manual"
+.TH "ODDMU-TEMPLATES" "5" "2026-01-01" "File Formats Manual"
 .PP
 .SH NAME
 .PP
@@ -13,9 +13,8 @@ oddmu-templates - how to write the templates
 .PP
 .SH SYNOPSIS
 .PP
-These files act as HTML templates: \fIadd.\&html\fR, \fIdiff.\&html\fR, \fIedit.\&html\fR,
-\fIfeed.\&html\fR, \fIsearch.\&html\fR, \fIstatic.\&html\fR, \fIupload.\&html\fR and \fIview.\&html\fR.\& They
-contain special placeholders in double bracers {{like this}}.\&
+Some HTML files act as templates.\& They contain special placeholders in double
+bracers {{like this}}.\&
 .PP
 .SH DESCRIPTION
 .PP
@@ -32,6 +31,10 @@ placeholders.\&
 .IP \(bu 4
 \fIfeed.\&html\fR uses a \fIfeed\fR
 .IP \(bu 4
+\fIlist.\&html\fR uses a \fIlist\fR
+.IP \(bu 4
+\fIpreview.\&html\fR uses a \fIpage\fR
+.IP \(bu 4
 \fIsearch.\&html\fR uses a \fIsearch\fR
 .IP \(bu 4
 \fIstatic.\&html\fR uses a \fIpage\fR
@@ -41,6 +44,29 @@ placeholders.\&
 \fIview.\&html\fR uses a \fIpage\fR
 .PD
 .PP
+The following property lists always indicate whether the property is
+percent-encoded or not.\& In theory, the html/template package would handle this.\&
+The problem is that the package gives special treatment to the semicolon, comma,
+question-mark and hash-sign as these are potential separators in a URL.\&
+.PP
+Consider the following:
+.PP
+.nf
+.RS 4
+<a href="{{\&.Name}}">{{\&.Name}}</a>
+.fi
+.RE
+.PP
+If \fI.\&Name\fR is "#foo", the html/template package treats it as a URL fragment
+inside the attribute instead of a file path that needs to be escaped to
+"%23foo".\& The same problem arises if \fI.\&Name\fR is "foo?\&" as the questionmark is
+not escaped and therefore treated as the separator between URL path and query
+parameters instead of being part of the name.\&
+.PP
+The consequences for template authors is that the properties that are
+percent-encoded must be used in links where as the regular properties must be
+used outside of links.\&
+.PP
 .SS Page
 .PP
 A page has the following properties:
@@ -48,14 +74,14 @@ A page has the following properties:
 \fI{{.\&Title}}\fR is the page title.\& If the page doesn'\&t provide its own title, the
 page name is used.\&
 .PP
-\fI{{.\&Name}}\fR is the page name, escaped for use in URLs.\& More specifically, it is
-percent-escaped except for the slashes.\& The page name doesn'\&t include the \fI.\&md\fR
-extension.\&
+\fI{{.\&Name}}\fR is the page name.\& The page name doesn'\&t include the \fI.\&md\fR extension.\&
 .PP
-\fI{{.\&Dir}}\fR is the page directory, percent-escaped except for the slashes.\&
+\fI{{.\&Path}}\fR is the page name, percent-encoded.\&
+.PP
+\fI{{.\&Dir}}\fR is the page directory, percent-encoded.\&
 .PP
 \fI{{.\&Base}}\fR is the basename of the current file (without the directory and
-without the \fI.\&md\fR extension), escaped for use in URLs.\&
+without the \fI.\&md\fR extension), percent-encoded.\&
 .PP
 \fI{{.\&Language}}\fR is the suspected language of the page.\& This is used to set the
 language on the \fIview.\&html\fR template.\& See "Non-English hyphenation" below.\&
@@ -77,14 +103,16 @@ For \fIsearch.\&html\fR, it is a page summary, with bold matches, as HTML.\&
 For \fIfeed.\&html\fR, it is the escaped (!\&) HTML of the feed item.\&
 .PD
 .PP
-\fI{{.\&Score}}\fR is a numerical score.\& It is only computed for \fIsearch.\&html\fR.\&
-.PP
 \fI{{.\&IsBlog}}\fR says whether the current page has a name starting with an ISO
 date.\&
 .PP
 \fI{{.\&Today}}\fR is the current date, in ISO format.\& This is useful for "new page"
 like links or forms (see \fBEXAMPLE\fR below).\&
 .PP
+\fI{{.\&Parents}}\fR is the array of links to parent pages (see \fBEXAMPLE\fR below).\& To
+refer to them, you need to use a \fI{{range .\&Parents}}\fR … \fI{{end}}\fR construct.\& A
+link has to properties, \fI{{.\&Title}}\fR and \fI{{.\&Url}}\fR.\&
+.PP
 \fI{{.\&Diff}}\fR is the page diff for \fIdiff.\&html\fR.\& It is only computed on demand so
 it can be used in other templates, too.\& It probably doesn'\&t make much sense to
 do so, however.\&
@@ -104,15 +132,77 @@ An item is a page plus a date.\& All the properties of a page can be used (see
 .PP
 \fI{{.\&Date}}\fR is the date of the last update to the page, in RFC 822 format.\&
 .PP
+In order to paginate feeds, the following attributes are also available in the
+feed:
+.PP
+\fI{{.\&From}}\fR is the item number where the feed starts.\& The first page starts at
+0.\& This can be passed to Oddmu via the query parameter \fIfrom\fR.\&
+.PP
+\fI{{.\&N}}\fR is the number items per page.\& The default is 10.\& This can be passed to
+Oddmu via the query parameter \fIn\fR.\& If this is set to 0, the feed is not
+paginated.\&
+.PP
+\fI{{.\&Complete}}\fR is a boolean that is true if the feed is not paginated.\& Such a
+feed cannot have a previous or next page.\&
+.PP
+\fI{{.\&Prev}}\fR is the item number where the previous page of the feed starts.\& On
+the first page, it'\&s value is 0 instead of -10.\& You need to test if \fI{{.\&From}}\fR
+is non-zero (in which case this is not the first page) before using \fI{{.\&Prev}}\fR.\&
+.PP
+\fI{{.\&Next}}\fR is the item number where the next feed starts, if there are any
+items left.\& If there are none, it'\&s value is 0.\&
+.PP
+\fI{{.\&PrevYear}}\fR is the year for the previous yearly archive.\& This is added on
+the index page or on year pages.\& Year pages are pages whose name is just a
+number (presumably a year).\& The property is only set on the first page of the
+feed, if the previous year page exists.\& The previous year is one higher than the
+year currently shown (if on a year page) or the current year (if looking at the
+index), since the feed goes backwards in time as new entries appear at the top.\&
+When looking at the page "2024" the previous page is "2025".\& Strangely enough,
+if the current year is 2026 but a page "2027" already exists, and the feed for
+the index page is generated, then "2027" (in the future) is the previous page.\&
+If the current year is 2026, the feed of the index page points to "2025" as the
+next year, if it exists.\& When the feed for "2025" is generated, however, the
+previous year is not set, assuming that the "2026" page does not yet exist and
+it is strange to consider the index page "the previous year" of "2025" in 2026.\&
+This might change in the future.\& If it isn'\&t set, it'\&s value is 0.\&
+.PP
+\fI{{.\&NextYear}}\fR is the year for the next yearly archive.\& See above for an
+explanation.\& The next year is one lower than the year currently shown (if on a
+year page) or the current year (if looking at the index).\& If it isn'\&t set, it'\&s
+value is 0.\&
+.PP
+.SS List
+.PP
+The list contains a directory name and an array of files.\&
+.PP
+\fI{{.\&Dir}}\fR is the directory name that is being listed, percent-encoded.\&
+.PP
+\fI{{.\&Files}}\fR is the array of files.\& To refer to them, you need to use a \fI{{range
+Files}}\fR … \fI{{end}}\fR construct.\&
+.PP
+Each file has the following attributes:
+.PP
+\fI{{.\&Name}}\fR is the filename.\& The ".\&md" suffix for Markdown files is part of the
+name (unlike page names).\&
+.PP
+\fI{{.\&Path}}\fR is the page name, percent-encoded.\&
+.PP
+\fI{{.\&Title}}\fR is the page title, if the file in question is a Markdown file.\&
+.PP
+\fI{{.\&IsDir}}\fR is a boolean used to indicate that this file is a directory.\&
+.PP
+\fI{{.\&IsUp}}\fR is a boolean used to indicate the entry for the parent directory
+(the first file in the array, unless the directory being listed is the top
+directory).\& The filename of this file is ".\&.\&".\&
+.PP
+\fI{{.\&Date}}\fR is the last modification date of the file.\&
+.PP
 .SS Search
 .PP
 \fI{{.\&Query}}\fR is the query string.\&
 .PP
-\fI{{.\&Dir}}\fR is the directory in which the search starts, percent-escaped except
-for the slashes.\&
-.PP
-\fI{{.\&Items}}\fR is an array of pages (see \fBPage\fR above).\& To refer to them, you need
-to use a \fI{{range .\&Items}}\fR … \fI{{end}}\fR construct.\&
+\fI{{.\&Dir}}\fR is the directory in which the search starts, percent-encoded.\&
 .PP
 \fI{{.\&Previous}}\fR, \fI{{.\&Page}}\fR and \fI{{.\&Next}}\fR are the previous, current and next
 page number in the results since doing arithmetics in templates is hard.\& The
@@ -123,18 +213,44 @@ available.\&
 .PP
 \fI{{.\&Results}}\fR indicates if there were any search results at all.\&
 .PP
+\fI{{.\&Items}}\fR is an array of results.\& To refer to them, you need to use a
+\fI{{range .\&Items}}\fR … \fI{{end}}\fR construct.\&
+.PP
+A result is a page plus a score and possibly images.\& All the properties of a
+page can be used (see \fBPage\fR above).\&
+.PP
+\fI{{.\&Score}}\fR is a numerical score.\& It is only computed for \fIsearch.\&html\fR.\&
+.PP
+\fI{{.\&Images}}\fR are the images where the alt-text matches at least one of the
+query terms (but not predicates and not hashtags since those apply to the page
+as a whole).\& To refer to them, you need to use a \fI{{range .\&Images}}\fR … \fI{{end}}\fR
+construct.\&
+.PP
+Each image has three properties:
+.PP
+\fI{{.\&Title}}\fR is the alt-text of the image.\& It can never be empty because images
+are only listed if a search term matches.\&
+.PP
+\fI{{.\&Name}}\fR is the file name for use in URLs.\&
+.PP
+\fI{{.\&Html}}\fR the image alt-text with a bold tag used to highlight the first
+search term that matched.\&
+.PP
 .SS Upload
 .PP
 \fI{{.\&Dir}}\fR is the directory where the uploaded file ends up, based on the URL
-path, percent-escaped except for the slashes.\&
+path, percent-encoded.\&
 .PP
-\fI{{.\&Name}}\fR is the \fIfilename\fR query parameter.\&
+\fI{{.\&FileName}}\fR is the \fIfilename\fR query parameter used to suggested a filename.\&
 .PP
-\fI{{.\&Last}}\fR is the filename of the last image uploaded.\&
+\fI{{.\&FilePath}}\fR is the filename, percent-encoded.\&
 .PP
-\fI{{.\&Image}}\fR is a boolean to indicate whether the last file uploaded has a file
-name indicating an image or not (such as ending in \fI.\&jpg\fR).\& If so, a thumbnail
-can be shown by the template, for example.\&
+\fI{{.\&Name}}\fR is the \fIpagename\fR query parameter used to indicate where to append
+links to the files.\&
+.PP
+\fI{{.\&Path}}\fR is the page name, percent-encoded.\&
+.PP
+\fI{{.\&Title}}\fR is the title of the page, if it exists.\&
 .PP
 \fI{{.\&MaxWidth}}\fR is the \fImaxwidth\fR query parameter, i.\&e.\& the value used for the
 previous image uploaded.\&
@@ -144,6 +260,22 @@ previous image uploaded.\&
 .PP
 \fI{{.\&Today}}\fR is the current date, in ISO format.\&
 .PP
+\fI{{.\&Uploads}}\fR an array of files already uploaded, based on the \fIuploads\fR query
+parameter.\& To refer to them, you need to use a \fI{{range .\&Uploads}}\fR … \fI{{end}}\fR
+construct.\& This is required because the \fIdrop\fR action redirects back to the
+\fIupload\fR action, so after saving one or more files, you can upload even more
+files.\&
+.PP
+Each upload has the following attributes:
+.PP
+\fI{{.\&Name}}\fR is the filename.\&
+.PP
+\fI{{.\&Path}}\fR is the file name, percent-encoded.\&
+.PP
+\fI{{.\&Image}}\fR is a boolean to indicate whether the upload is an image or not
+(such as ending in \fI.\&jpg\fR).\& If so, a thumbnail can be shown by the template, for
+example.\&
+.PP
 .SS Non-English hyphenation
 .PP
 Automatic hyphenation by the browser requires two things: The style sheet must
@@ -157,18 +289,18 @@ use a small number of languages – or just a single language!\& – you can set
 environment variable ODDMU_LANGUAGES to a comma-separated list of ISO 639-1
 codes, e.\&g.\& "en" or "en,de,fr,pt".\&
 .PP
-"view.\&html" is used the template to render a single page and so the language
-detected is added to the "html" element.\&
+"view.\&html" is used to render a single page and so the language detected is
+added to the "html" element.\&
 .PP
 "search.\&html" is the template used to render search results and so "en" is used
 for the "html" element and the language detected for every page in the search
 result is added to the "article" element for each snippet.\&
 .PP
-"edit.\&html" and "add.\&html" are the templates used to edit a page and at that
-point, the language isn'\&t known, so "en" is used for the "html" element and no
-language is used for the "textarea" element.\&
+"edit.\&html" and "add.\&html" are the templates used to edit a page.\& If the page
+already exists, its language is used for the "textarea" element.\& If the page is
+new, no language is used for the "textarea" element.\&
 .PP
-.SH EXAMPLE
+.SH EXAMPLES
 .PP
 The following link in a template takes people to today'\&s page.\& If no such page
 exists, they are redirected to the edit form where it can be created.\&
@@ -202,6 +334,16 @@ itself is a blog page.\& Useful for \fIadd.\&html\fR:
 .fi
 .RE
 .PP
+The following adds a list of links to parent directories.\& Useful for \fIview.\&html\fR:
+.PP
+.nf
+.RS 4
+<nav>
+{{range \&.Parents}}/ <a href="{{\&.Url}}">{{\&.Title}}</a>{{end}}
+</nav>
+.fi
+.RE
+.PP
 .SH NOTES
 .PP
 The templates are always used as-is, irrespective of the current directory.\&

man/oddmu-templates.5.txt

@@ -6,9 +6,8 @@ oddmu-templates - how to write the templates
 
 # SYNOPSIS
 
-These files act as HTML templates: _add.html_, _diff.html_, _edit.html_,
-_feed.html_, _search.html_, _static.html_, _upload.html_ and _view.html_. They
-contain special placeholders in double bracers {{like this}}.
+Some HTML files act as templates. They contain special placeholders in double
+bracers {{like this}}.
 
 # DESCRIPTION
 
@@ -19,11 +18,34 @@ placeholders.
 - _diff.html_ uses a _page_
 - _edit.html_ uses a _page_
 - _feed.html_ uses a _feed_
+- _preview.html_ uses a _page_
 - _search.html_ uses a _search_
+- _sitemap.html_ uses a _sitemap_
 - _static.html_ uses a _page_
 - _upload.html_ uses an _upload_
 - _view.html_ uses a _page_
 
+The following property lists always indicate whether the property is
+percent-encoded or not. In theory, the html/template package would handle this.
+The problem is that the package gives special treatment to the semicolon, comma,
+question-mark and hash-sign as these are potential separators in a URL.
+
+Consider the following:
+
+```
+<a href="{{.Name}}">{{.Name}}</a>
+```
+
+If _.Name_ is "#foo", the html/template package treats it as a URL fragment
+inside the attribute instead of a file path that needs to be escaped to
+"%23foo". The same problem arises if _.Name_ is "foo?" as the questionmark is
+not escaped and therefore treated as the separator between URL path and query
+parameters instead of being part of the name.
+
+The consequences for template authors is that the properties that are
+percent-encoded must be used in links where as the regular properties must be
+used outside of links.
+
 ## Page
 
 A page has the following properties:
@@ -31,14 +53,14 @@ A page has the following properties:
 _{{.Title}}_ is the page title. If the page doesn't provide its own title, the
 page name is used.
 
-_{{.Name}}_ is the page name, escaped for use in URLs. More specifically, it is
-percent-escaped except for the slashes. The page name doesn't include the _.md_
-extension.
+_{{.Name}}_ is the page name. The page name doesn't include the _.md_ extension.
 
-_{{.Dir}}_ is the page directory, percent-escaped except for the slashes.
+_{{.Path}}_ is the page name, percent-encoded.
+
+_{{.Dir}}_ is the page directory, percent-encoded.
 
 _{{.Base}}_ is the basename of the current file (without the directory and
-without the _.md_ extension), escaped for use in URLs.
+without the _.md_ extension), percent-encoded.
 
 _{{.Language}}_ is the suspected language of the page. This is used to set the
 language on the _view.html_ template. See "Non-English hyphenation" below.
@@ -55,14 +77,16 @@ _{{.Html}}_ contains some sort of HTML that depends on the template used.
 - For _search.html_, it is a page summary, with bold matches, as HTML.
 - For _feed.html_, it is the escaped (!) HTML of the feed item.
 
-_{{.Score}}_ is a numerical score. It is only computed for _search.html_.
-
 _{{.IsBlog}}_ says whether the current page has a name starting with an ISO
 date.
 
 _{{.Today}}_ is the current date, in ISO format. This is useful for "new page"
 like links or forms (see *EXAMPLE* below).
 
+_{{.Parents}}_ is the array of links to parent pages (see *EXAMPLE* below). To
+refer to them, you need to use a _{{range .Parents}}_ … _{{end}}_ construct. A
+link has to properties, _{{.Title}}_ and _{{.Url}}_.
+
 _{{.Diff}}_ is the page diff for _diff.html_. It is only computed on demand so
 it can be used in other templates, too. It probably doesn't make much sense to
 do so, however.
@@ -82,15 +106,51 @@ An item is a page plus a date. All the properties of a page can be used (see
 
 _{{.Date}}_ is the date of the last update to the page, in RFC 822 format.
 
+In order to paginate feeds, the following attributes are also available in the
+feed:
+
+_{{.From}}_ is the item number where the feed starts. The first page starts at
+0. This can be passed to Oddmu via the query parameter _from_.
+
+_{{.N}}_ is the number items per page. The default is 10. This can be passed to
+Oddmu via the query parameter _n_. If this is set to 0, the feed is not
+paginated.
+
+_{{.Complete}}_ is a boolean that is true if the feed is not paginated. Such a
+feed cannot have a previous or next page.
+
+_{{.Prev}}_ is the item number where the previous page of the feed starts. On
+the first page, it's value is 0 instead of -10. You need to test if _{{.From}}_
+is non-zero (in which case this is not the first page) before using _{{.Prev}}_.
+
+_{{.Next}}_ is the item number where the next feed starts, if there are any
+items left. If there are none, it's value is 0.
+
+_{{.PrevYear}}_ is the year for the previous yearly archive. This is added on
+the index page or on year pages. Year pages are pages whose name is just a
+number (presumably a year). The property is only set on the first page of the
+feed, if the previous year page exists. The previous year is one higher than the
+year currently shown (if on a year page) or the current year (if looking at the
+index), since the feed goes backwards in time as new entries appear at the top.
+When looking at the page "2024" the previous page is "2025". Strangely enough,
+if the current year is 2026 but a page "2027" already exists, and the feed for
+the index page is generated, then "2027" (in the future) is the previous page.
+If the current year is 2026, the feed of the index page points to "2025" as the
+next year, if it exists. When the feed for "2025" is generated, however, the
+previous year is not set, assuming that the "2026" page does not yet exist and
+it is strange to consider the index page "the previous year" of "2025" in 2026.
+This might change in the future. If it isn't set, it's value is 0.
+
+_{{.NextYear}}_ is the year for the next yearly archive. See above for an
+explanation. The next year is one lower than the year currently shown (if on a
+year page) or the current year (if looking at the index). If it isn't set, it's
+value is 0.
+
 ## Search
 
 _{{.Query}}_ is the query string.
 
-_{{.Dir}}_ is the directory in which the search starts, percent-escaped except
-for the slashes.
-
-_{{.Items}}_ is an array of pages (see *Page* above). To refer to them, you need
-to use a _{{range .Items}}_ … _{{end}}_ construct.
+_{{.Dir}}_ is the directory in which the search starts, percent-encoded.
 
 _{{.Previous}}_, _{{.Page}}_ and _{{.Next}}_ are the previous, current and next
 page number in the results since doing arithmetics in templates is hard. The
@@ -101,18 +161,54 @@ _{{.More}}_ indicates if there are any more search results.
 
 _{{.Results}}_ indicates if there were any search results at all.
 
+_{{.Items}}_ is an array of results. To refer to them, you need to use a
+_{{range .Items}}_ … _{{end}}_ construct.
+
+A result is a page plus a score and possibly images. All the properties of a
+page can be used (see *Page* above).
+
+_{{.Score}}_ is a numerical score. It is only computed for _search.html_.
+
+_{{.Images}}_ are the images where the alt-text matches at least one of the
+query terms (but not predicates and not hashtags since those apply to the page
+as a whole). To refer to them, you need to use a _{{range .Images}}_ … _{{end}}_
+construct.
+
+Each image has three properties:
+
+_{{.Title}}_ is the alt-text of the image. It can never be empty because images
+are only listed if a search term matches.
+
+_{{.Name}}_ is the file name for use in URLs.
+
+_{{.Html}}_ the image alt-text with a bold tag used to highlight the first
+search term that matched.
+
+## Sitemap
+
+The sitemap contains a list of URLs, each with its location:
+
+_{{.URL}}_ is the list of URLs.
+
+Each URL has the following attributes:
+
+_{{.Loc}}_ with the actual page URL.
+
 ## Upload
 
 _{{.Dir}}_ is the directory where the uploaded file ends up, based on the URL
-path, percent-escaped except for the slashes.
+path, percent-encoded.
 
-_{{.Name}}_ is the _filename_ query parameter.
+_{{.FileName}}_ is the _filename_ query parameter used to suggested a filename.
 
-_{{.Last}}_ is the filename of the last image uploaded.
+_{{.FilePath}}_ is the filename, percent-encoded.
 
-_{{.Image}}_ is a boolean to indicate whether the last file uploaded has a file
-name indicating an image or not (such as ending in _.jpg_). If so, a thumbnail
-can be shown by the template, for example.
+_{{.Name}}_ is the _pagename_ query parameter used to indicate where to append
+links to the files.
+
+_{{.Path}}_ is the page name, percent-encoded.
+
+_{{.Title}}_ is the title of the page, if it exists.
 
 _{{.MaxWidth}}_ is the _maxwidth_ query parameter, i.e. the value used for the
 previous image uploaded.
@@ -122,6 +218,22 @@ previous image uploaded.
 
 _{{.Today}}_ is the current date, in ISO format.
 
+_{{.Uploads}}_ an array of files already uploaded, based on the _uploads_ query
+parameter. To refer to them, you need to use a _{{range .Uploads}}_ … _{{end}}_
+construct. This is required because the _drop_ action redirects back to the
+_upload_ action, so after saving one or more files, you can upload even more
+files.
+
+Each upload has the following attributes:
+
+_{{.Name}}_ is the filename.
+
+_{{.Path}}_ is the file name, percent-encoded.
+
+_{{.Image}}_ is a boolean to indicate whether the upload is an image or not
+(such as ending in _.jpg_). If so, a thumbnail can be shown by the template, for
+example.
+
 ## Non-English hyphenation
 
 Automatic hyphenation by the browser requires two things: The style sheet must
@@ -135,18 +247,18 @@ use a small number of languages – or just a single language! – you can set t
 environment variable ODDMU_LANGUAGES to a comma-separated list of ISO 639-1
 codes, e.g. "en" or "en,de,fr,pt".
 
-"view.html" is used the template to render a single page and so the language
-detected is added to the "html" element.
+"view.html" is used to render a single page and so the language detected is
+added to the "html" element.
 
 "search.html" is the template used to render search results and so "en" is used
 for the "html" element and the language detected for every page in the search
 result is added to the "article" element for each snippet.
 
-"edit.html" and "add.html" are the templates used to edit a page and at that
-point, the language isn't known, so "en" is used for the "html" element and no
-language is used for the "textarea" element.
+"edit.html" and "add.html" are the templates used to edit a page. If the page
+already exists, its language is used for the "textarea" element. If the page is
+new, no language is used for the "textarea" element.
 
-# EXAMPLE
+# EXAMPLES
 
 The following link in a template takes people to today's page. If no such page
 exists, they are redirected to the edit form where it can be created.
@@ -174,6 +286,14 @@ itself is a blog page. Useful for _add.html_:
 	  autofocus required>{{- if .IsBlog}}**{{.Today}}**. {{end}}</textarea>
 ```
 
+The following adds a list of links to parent directories. Useful for _view.html_:
+
+```
+<nav>
+{{range .Parents}}/ <a href="{{.Url}}">{{.Title}}</a>{{end}}
+</nav>
+```
+
 # NOTES
 
 The templates are always used as-is, irrespective of the current directory.

man/oddmu-toc.1

@@ -0,0 +1,32 @@
+.\" Generated by scdoc 1.11.3
+.\" Complete documentation for this program is not available as a GNU info page
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.nh
+.ad l
+.\" Begin generated content:
+.TH "ODDMU-TOC" "1" "2025-04-05"
+.PP
+.SH NAME
+.PP
+oddmu-toc - print the table of contents (toc) for pages
+.PP
+.SH SYNOPSIS
+.PP
+\fBoddmu toc\fR \fIpage names.\&.\&.\&\fR
+.PP
+.SH DESCRIPTION
+.PP
+The "toc" subcommand prints the table of contents for one or more Markdown
+files.\& Use "-" as the page name if you want to read Markdown from \fBstdin\fR.\&
+.PP
+This can be useful for very long pages that need a table of contents
+at the beginning.\&
+.PP
+.SH SEE ALSO
+.PP
+\fIoddmu\fR(1)
+.PP
+.SH AUTHORS
+.PP
+Maintained by Alex Schroeder <alex@gnu.\&org>.\&

man/oddmu-toc.1.txt

@@ -0,0 +1,25 @@
+ODDMU-TOC(1)
+
+# NAME
+
+oddmu-toc - print the table of contents (toc) for pages
+
+# SYNOPSIS
+
+*oddmu toc* _page names..._
+
+# DESCRIPTION
+
+The "toc" subcommand prints the table of contents for one or more Markdown
+files. Use "-" as the page name if you want to read Markdown from *stdin*.
+
+This can be useful for very long pages that need a table of contents
+at the beginning.
+
+# SEE ALSO
+
+_oddmu_(1)
+
+# AUTHORS
+
+Maintained by Alex Schroeder <alex@gnu.org>.

man/oddmu-webdav.5

@@ -0,0 +1,206 @@
+.\" Generated by scdoc 1.11.3
+.\" Complete documentation for this program is not available as a GNU info page
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.nh
+.ad l
+.\" Begin generated content:
+.TH "ODDMU-WEBDAV" "5" "2025-07-16"
+.PP
+.SH NAME
+.PP
+oddmu-webdav - how to setup Web-DAV using Apache for Oddmu
+.PP
+.SH DESCRIPTION
+.PP
+With the Apache Web-DAV module enabled, users can mount the wiki as a remote
+file system and manage the files using some other tool.\& Using the Apache Web-DAV
+module means that the same user accounts can be used as for the regular wiki.\&
+.PP
+.SH CONFIGURATION
+.PP
+Consider the "campaignwiki.\&org" site in the example below.\& This site offers
+users their own wikis.\& Thus:
+.PP
+"https://campaignwiki.\&org/" is a regular website with static files.\&
+.PP
+"https://campaignwiki.\&org/view/index" is one of the requests that gets passed to
+a Unix domain socket.\& See "Socket Activation" in \fIoddmu\fR(1).\&
+.PP
+Some of these actions are protected by basic authentication.\& A valid user is
+required to make changes to the site.\& Valid users are "admin" and "alex".\&
+.PP
+"data" is the Oddmu working directory.\& WebDAV is turned on for this directory.\& A
+shortcut has been taken, here: The "data" subdirectory requires authentication
+and offers WebDAV access.\& The other paths also require authentication and map to
+Oddmu actions.\& The fact that WebDAV access is "enabled" for the Oddmu actions
+has no effect.\& The only drawback is that "https://campaignwiki.\&org/data/" now
+requires authentication even if only used for reading.\&
+.PP
+"https://campaignwiki.\&org/view/knochentanz/index" is a separate site called
+"knochentanz".\& The only valid user is "knochentanz".\&
+.PP
+Notice how the \fIarchive\fR action is not available at the top level, only for
+subdirectories.\&
+.PP
+.nf
+.RS 4
+MDomain campaignwiki\&.org
+
+<VirtualHost *:80>
+    ServerName campaignwiki\&.org
+    Redirect permanent / https://campaignwiki\&.org/
+</VirtualHost>
+
+<VirtualHost *:443>
+    ServerAdmin alex@campaignwiki\&.org
+    ServerName campaignwiki\&.org
+    # Static HTML, CSS, JavaScript files and so on are saved here\&.
+    DocumentRoot /home/alex/campaignwiki\&.org
+    <Directory /home/alex/campaignwiki\&.org>
+        Options Indexes MultiViews SymLinksIfOwnerMatch
+        AllowOverride All
+        Require all granted
+    </Directory>
+    SSLEngine on
+    # Any request to the following paths is passed on to the Unix domain socket\&.
+    ProxyPassMatch 
+      "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive/\&.+)/(\&.*))$" 
+      "unix:/home/oddmu/campaignwiki\&.sock|http://localhost/$1"
+    # /archive only for subdirectories
+    Redirect "/archive/data\&.zip" "/view/archive"
+    # Making changes to the wiki requires authentication\&.
+    <LocationMatch "^/(data|edit|preview|save|add|append|upload|drop)/">
+      AuthType Basic
+      AuthName "Password Required"
+      AuthUserFile /home/oddmu/\&.htpasswd
+      Require user admin alex
+      Dav On
+    </LocationMatch>
+    # Making changes to a subdirectory requires different accounts\&.
+    <LocationMatch "^/(data|edit|preview|save|add|append|upload|drop|archive)/knochentanz">
+      Require user knochentanz
+    </LocationMatch>
+</VirtualHost>
+.fi
+.RE
+.PP
+In order for this to work, you must enable the mod_dav_fs module.\& This
+automatically enables to the mod_dav module, too.\& Restart the server after
+installing enabling a module.\&
+.PP
+.nf
+.RS 4
+sudo a2enmod mod_dav_fs
+sudo apachectl restart
+.fi
+.RE
+.PP
+Check the permissions for the data directory.\& If the Oddmu service uses the
+"oddmu" user and Apache uses the "www-data" user, you could add the data
+directory to the "www-data" group and give it write permissions:
+.PP
+.nf
+.RS 4
+sudo chown oddmu:www-data /home/alex/campaignwiki\&.org/data/knochentanz
+sudo chmod g+w /home/alex/campaignwiki\&.org/data/knochentanz
+.fi
+.RE
+.PP
+.SH EXAMPLES
+.PP
+Web-DAV clients are often implemented such that they only work with servers that
+exactly match their assumptions.\& If you'\&re trying to use \fIgvfs\fR(7), the Windows
+File Explorer or the macOS Finder to edit Oddmu pages using Web-DAV, you'\&re on
+your own.\& Sometimes it works.\& I'\&ve used Nemo 5.\&6.\&4 to connect to the server and
+edited files using gedit 44.\&2.\& But I'\&ve used other file managers and other
+editors with WebDAV support and they didn'\&t work very well.\&
+.PP
+On Windows, try third party tools like WinSCP.\&
+.PP
+This section has examples sessions using command-line tools that work.\&
+.PP
+.SS cadaver
+.PP
+Here'\&s how to use \fIcadaver\fR(1).\& The "edit" command uses the editor specified in
+the EDITOR environment variable.\& In this example, that'\&s
+"emacsclient --alternate-editor= ".\&
+.PP
+.nf
+.RS 4
+cadaver https://campaignwiki\&.org/data/knochentanz/
+Authentication required for Password Required on server `campaignwiki\&.org\&':
+Username: knochentanz
+Password: 
+dav:/data/knochentanz/> edit index\&.md
+Locking `index\&.md\&': succeeded\&.
+Downloading `/data/knochentanz/index\&.md\&' to /tmp/cadaver-edit-fHTllt\&.md
+Progress: [=============================>] 100\&.0% of 2725 bytes succeeded\&.
+Running editor: `emacsclient --alternate-editor= /tmp/cadaver-edit-fHTllt\&.md\&'\&.\&.\&.
+Waiting for Emacs\&.\&.\&.
+Changes were made\&.
+Uploading changes to `/data/knochentanz/index\&.md\&'
+Progress: [=============================>] 100\&.0% of 2726 bytes succeeded\&.
+Unlocking `index\&.md\&': succeeded\&.
+.fi
+.RE
+.PP
+.SS curl and hdav
+.PP
+Here'\&s how to use \fIcurl\fR(1) to get the file from the public "/view" location and
+how to use \fIhdav\fR(1) to put the file to the protected "/data" location.\& In this
+example, \fIed\fR(1) is used to append the word "test" to the file.\&
+.PP
+.nf
+.RS 4
+alex@melanobombus ~> curl --output index\&.md https://campaignwiki\&.org/view/knochentanz/index\&.md
+  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
+                                 Dload  Upload   Total   Spent    Left  Speed
+100  2726  100  2726    0     0  36662      0 --:--:-- --:--:-- --:--:-- 37861
+alex@melanobombus ~> ed index\&.md 
+2726
+a
+test
+\&.
+w
+2731
+q
+alex@melanobombus ~> hdav put index\&.md https://campaignwiki\&.org/data/knochentanz/index\&.md --username knochentanz
+hDAV version 1\&.3\&.4, Copyright (C) 2012-2016  Clint Adams
+hDAV comes with ABSOLUTELY NO WARRANTY\&.
+This is free software, and you are welcome to redistribute it
+under certain conditions\&.
+
+Password for knochentanz at URL https://campaignwiki\&.org/data/knochentanz/index\&.md: ********
+.fi
+.RE
+.PP
+.SS davfs2
+.PP
+Here'\&s how to use \fIdavfs2\fR(1) using \fImount\fR(1).\& Now the whole wiki is mounted
+and can be edited like local files.\& In this example, \fIecho\fR(1) and redirection
+is used to append the word "test" to a file.\&
+.PP
+.nf
+.RS 4
+alex@melanobombus ~> mkdir knochentanz
+alex@melanobombus ~> sudo mount -t davfs -o username=knochentanz,uid=alex 
+    https://campaignwiki\&.org/data/knochentanz/ knochentanz/
+  Password:  ********
+alex@melanobombus ~> echo test >> knochentanz/index\&.md
+.fi
+.RE
+.PP
+.SH SEE ALSO
+.PP
+\fIoddmu\fR(1), \fIoddmu-apache\fR(5)
+.PP
+"Apache Module mod_dav".\&
+https://httpd.\&apache.\&org/docs/current/mod/mod_dav.\&html
+.PP
+"WinSCP"
+https://winscp.\&net/
+.PP
+.SH AUTHORS
+.PP
+Maintained by Alex Schroeder <alex@gnu.\&org>.\&

man/oddmu-webdav.5.txt

@@ -0,0 +1,187 @@
+ODDMU-WEBDAV(5)
+
+# NAME
+
+oddmu-webdav - how to setup Web-DAV using Apache for Oddmu
+
+# DESCRIPTION
+
+With the Apache Web-DAV module enabled, users can mount the wiki as a remote
+file system and manage the files using some other tool. Using the Apache Web-DAV
+module means that the same user accounts can be used as for the regular wiki.
+
+# CONFIGURATION
+
+Consider the "campaignwiki.org" site in the example below. This site offers
+users their own wikis. Thus:
+
+"https://campaignwiki.org/" is a regular website with static files.
+
+"https://campaignwiki.org/view/index" is one of the requests that gets passed to
+a Unix domain socket. See "Socket Activation" in _oddmu_(1).
+
+Some of these actions are protected by basic authentication. A valid user is
+required to make changes to the site. Valid users are "admin" and "alex".
+
+"data" is the Oddmu working directory. WebDAV is turned on for this directory. A
+shortcut has been taken, here: The "data" subdirectory requires authentication
+and offers WebDAV access. The other paths also require authentication and map to
+Oddmu actions. The fact that WebDAV access is "enabled" for the Oddmu actions
+has no effect. The only drawback is that "https://campaignwiki.org/data/" now
+requires authentication even if only used for reading.
+
+"https://campaignwiki.org/view/knochentanz/index" is a separate site called
+"knochentanz". The only valid user is "knochentanz".
+
+Notice how the _archive_ action is not available at the top level, only for
+subdirectories.
+
+```
+MDomain campaignwiki.org
+
+<VirtualHost *:80>
+    ServerName campaignwiki.org
+    Redirect permanent / https://campaignwiki.org/
+</VirtualHost>
+
+<VirtualHost *:443>
+    ServerAdmin alex@campaignwiki.org
+    ServerName campaignwiki.org
+    # Static HTML, CSS, JavaScript files and so on are saved here.
+    DocumentRoot /home/alex/campaignwiki.org
+    <Directory /home/alex/campaignwiki.org>
+        Options Indexes MultiViews SymLinksIfOwnerMatch
+        AllowOverride All
+        Require all granted
+    </Directory>
+    SSLEngine on
+    # Any request to the following paths is passed on to the Unix domain socket.
+    ProxyPassMatch \
+      "^/((view|preview|diff|edit|save|add|append|upload|drop|search|archive/.+)/(.*))$" \
+      "unix:/home/oddmu/campaignwiki.sock|http://localhost/$1"
+    # /archive only for subdirectories
+    Redirect "/archive/data.zip" "/view/archive"
+    # Making changes to the wiki requires authentication.
+    <LocationMatch "^/(data|edit|preview|save|add|append|upload|drop)/">
+      AuthType Basic
+      AuthName "Password Required"
+      AuthUserFile /home/oddmu/.htpasswd
+      Require user admin alex
+      Dav On
+    </LocationMatch>
+    # Making changes to a subdirectory requires different accounts.
+    <LocationMatch "^/(data|edit|preview|save|add|append|upload|drop|archive)/knochentanz">
+      Require user knochentanz
+    </LocationMatch>
+</VirtualHost>
+```
+
+In order for this to work, you must enable the mod_dav_fs module. This
+automatically enables to the mod_dav module, too. Restart the server after
+installing enabling a module.
+
+```
+sudo a2enmod mod_dav_fs
+sudo apachectl restart
+```
+
+Check the permissions for the data directory. If the Oddmu service uses the
+"oddmu" user and Apache uses the "www-data" user, you could add the data
+directory to the "www-data" group and give it write permissions:
+
+```
+sudo chown oddmu:www-data /home/alex/campaignwiki.org/data/knochentanz
+sudo chmod g+w /home/alex/campaignwiki.org/data/knochentanz
+```
+
+# EXAMPLES
+
+Web-DAV clients are often implemented such that they only work with servers that
+exactly match their assumptions. If you're trying to use _gvfs_(7), the Windows
+File Explorer or the macOS Finder to edit Oddmu pages using Web-DAV, you're on
+your own. Sometimes it works. I've used Nemo 5.6.4 to connect to the server and
+edited files using gedit 44.2. But I've used other file managers and other
+editors with WebDAV support and they didn't work very well.
+
+On Windows, try third party tools like WinSCP.
+
+This section has examples sessions using command-line tools that work.
+
+## cadaver
+
+Here's how to use _cadaver_(1). The "edit" command uses the editor specified in
+the EDITOR environment variable. In this example, that's
+"emacsclient --alternate-editor= ".
+
+```
+cadaver https://campaignwiki.org/data/knochentanz/
+Authentication required for Password Required on server `campaignwiki.org':
+Username: knochentanz
+Password: 
+dav:/data/knochentanz/> edit index.md
+Locking `index.md': succeeded.
+Downloading `/data/knochentanz/index.md' to /tmp/cadaver-edit-fHTllt.md
+Progress: [=============================>] 100.0% of 2725 bytes succeeded.
+Running editor: `emacsclient --alternate-editor= /tmp/cadaver-edit-fHTllt.md'...
+Waiting for Emacs...
+Changes were made.
+Uploading changes to `/data/knochentanz/index.md'
+Progress: [=============================>] 100.0% of 2726 bytes succeeded.
+Unlocking `index.md': succeeded.
+```
+
+## curl and hdav
+
+Here's how to use _curl_(1) to get the file from the public "/view" location and
+how to use _hdav_(1) to put the file to the protected "/data" location. In this
+example, _ed_(1) is used to append the word "test" to the file.
+
+```
+alex@melanobombus ~> curl --output index.md https://campaignwiki.org/view/knochentanz/index.md
+  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
+                                 Dload  Upload   Total   Spent    Left  Speed
+100  2726  100  2726    0     0  36662      0 --:--:-- --:--:-- --:--:-- 37861
+alex@melanobombus ~> ed index.md 
+2726
+a
+test
+.
+w
+2731
+q
+alex@melanobombus ~> hdav put index.md https://campaignwiki.org/data/knochentanz/index.md --username knochentanz
+hDAV version 1.3.4, Copyright (C) 2012-2016  Clint Adams
+hDAV comes with ABSOLUTELY NO WARRANTY.
+This is free software, and you are welcome to redistribute it
+under certain conditions.
+
+Password for knochentanz at URL https://campaignwiki.org/data/knochentanz/index.md: ********
+```
+
+## davfs2
+
+Here's how to use _davfs2_(1) using _mount_(1). Now the whole wiki is mounted
+and can be edited like local files. In this example, _echo_(1) and redirection
+is used to append the word "test" to a file.
+
+```
+alex@melanobombus ~> mkdir knochentanz
+alex@melanobombus ~> sudo mount -t davfs -o username=knochentanz,uid=alex \
+    https://campaignwiki.org/data/knochentanz/ knochentanz/
+  Password:  ********
+alex@melanobombus ~> echo test >> knochentanz/index.md
+```
+
+# SEE ALSO
+
+_oddmu_(1), _oddmu-apache_(5)
+
+"Apache Module mod_dav".
+https://httpd.apache.org/docs/current/mod/mod_dav.html
+
+"WinSCP"
+https://winscp.net/
+
+# AUTHORS
+
+Maintained by Alex Schroeder <alex@gnu.org>.

man/oddmu.1

@@ -1,409 +0,0 @@
-.\" Generated by scdoc 1.11.3
-.\" Complete documentation for this program is not available as a GNU info page
-.ie \n(.g .ds Aq \(aq
-.el       .ds Aq '
-.nh
-.ad l
-.\" Begin generated content:
-.TH "ODDMU" "1" "2024-03-07"
-.PP
-.SH NAME
-.PP
-oddmu - a wiki server
-.PP
-Oddmu is sometimes written Oddµ because µ is the letter mu.\&
-.PP
-.SH SYNOPSIS
-.PP
-\fBoddmu\fR
-.PP
-.SH DESCRIPTION
-.PP
-Oddmu can be used as a static site generator, turning Markdown files into HTML
-files, or it can be used as a public or a private wiki server.\& If it runs as a
-public wiki server, a regular webserver should be used as reverse proxy.\&
-.PP
-Run Oddmu without any arguments to serve the current working directory as a wiki
-on port 8080.\& Point your browser to http://localhost:8080/ to use it.\& This
-redirects you to http://localhost:8080/view/index – the first page you'\&ll
-create, most likely.\&
-.PP
-See \fIoddmu\fR(5) for details about the page formatting.\&
-.PP
-If you request a page that doesn'\&t exist, Oddmu tries to find a matching
-Markdown file by appending the extension ".\&md" to the page name.\& In the example
-above, the page name requested is "index" and the file name Oddmu tries to read
-is "index.\&md".\& If no such file exists, Oddmu offers you to create the page.\&
-.PP
-If your files don'\&t provide their own title ("# title"), the file name (without
-".\&md") is used for the page title.\&
-.PP
-Every file can be viewed as feed by using the extension ".\&rss".\& The
-feed items are based on links in bullet lists using the asterix
-("*").\&
-.PP
-Subdirectories are created as necessary.\&
-.PP
-The wiki knows the following actions for a given page name and (optional)
-directory:
-.PP
-.PD 0
-.IP \(bu 4
-\fI/\fR redirects to /view/index
-.IP \(bu 4
-\fI/view/dir/\fR redirects to /view/dir/index
-.IP \(bu 4
-\fI/view/dir/name\fR shows a page
-.IP \(bu 4
-\fI/view/dir/name.\&md\fR shows the source text of a page
-.IP \(bu 4
-\fI/view/dir/name.\&rss\fR shows  the RSS feed for the pages linked
-.IP \(bu 4
-\fI/diff/dir/name\fR shows the last change to a page
-.IP \(bu 4
-\fI/edit/dir/name\fR shows a form to edit a page
-.IP \(bu 4
-\fI/save/dir/name\fR saves an edit
-.IP \(bu 4
-\fI/add/dir/name\fR shows a form to add to a page
-.IP \(bu 4
-\fI/append/dir/name\fR appends an addition to a page
-.IP \(bu 4
-\fI/upload/dir/name\fR shows a form to upload a file
-.IP \(bu 4
-\fI/drop/dir/name\fR saves an upload
-.IP \(bu 4
-\fI/search/dir/?\&q=term\fR to search for a term
-.IP \(bu 4
-\fI/archive/dir/name.\&zip\fR to download a zip file of a directory
-.PD
-.PP
-When calling the \fIsave\fR and \fIappend\fR action, the page name is taken from the URL
-path and the page content is taken from the \fIbody\fR form parameter.\& To
-illustrate, here'\&s how to edit the "welcome" page using \fIcurl\fR:
-.PP
-.nf
-.RS 4
-curl --form body="Did you bring a towel?" 
-  http://localhost:8080/save/welcome
-.fi
-.RE
-.PP
-When calling the \fIdrop\fR action, the query parameters used are \fIname\fR for the
-target filename, \fIfile\fR for the file to upload.\& If the query parameter
-\fImaxwidth\fR is set, an attempt is made to decode and resize the image.\& JPG, PNG,
-WEBP and HEIC files can be decoded.\& Only JPG and PNG files can be encoded,
-however.\& If the target name ends in \fI.\&jpg\fR, the \fIquality\fR query parameter is
-also taken into account.\& To upload some thumbnails:
-.PP
-.nf
-.RS 4
-for f in *\&.jpg; do
-  curl --form name="$f" --form file=@"$f" --form maxwidth=100 
-    http://localhost:8080/drop/
-done
-.fi
-.RE
-.PP
-When calling the \fIsearch\fR action, the search terms are taken from the query
-parameter \fIq\fR.\&
-.PP
-.nf
-.RS 4
-curl \&'http://localhost:8080/search/?q=towel\&'
-.fi
-.RE
-.PP
-The page name to act upon is optionally taken from the query parameter \fIid\fR.\& In
-this case, the directory must also be part of the query parameter and not of the
-URL path.\&
-.PP
-.nf
-.RS 4
-curl \&'http://localhost:8080/view/?id=man/oddmu\&.1\&.txt\&'
-.fi
-.RE
-.PP
-The base name for the \fIarchive\fR action is used by the browser to save the
-downloaded file.\& For Oddmu, only the directory is important.\& The following zips
-the \fIman\fR directory and saves it as \fIman.\&zip\fR.\&
-.PP
-.nf
-.RS 4
-curl --remote-name \&'http://localhost:8080/archive/man/man\&.zip
-.fi
-.RE
-.PP
-.SH CONFIGURATION
-.PP
-The template files are the HTML files in the working directory:
-.PP
-.PD 0
-.IP \(bu 4
-\fIview.\&html\fR shows a page
-.IP \(bu 4
-\fIdiff.\&html\fR shows the last change to a page
-.IP \(bu 4
-\fIedit.\&html\fR shows a form to edit a page
-.IP \(bu 4
-\fIadd.\&html\fR shows a form to add to a page
-.IP \(bu 4
-\fIupload.\&html\fR shows a form to upload a file
-.IP \(bu 4
-\fIsearch.\&html\fR shows the search results
-.IP \(bu 4
-\fIstatic.\&html\fR is used to generate a static site
-.IP \(bu 4
-\fIfeed.\&html\fR is used to generate a RSS feed
-.PD
-.PP
-Please change the templates!\&
-.PP
-The first change you should make is to replace the name and email address in the
-footer of \fIview.\&html\fR.\& Look for "Your Name" and "example.\&org".\&
-.PP
-The second change you should make is to replace the name, email address and
-domain name in "feed.\&html".\& Look for "Your Name" and "example.\&org".\&
-.PP
-See \fIoddmu-templates\fR(5) for more.\&
-.PP
-.SH ENVIRONMENT
-.PP
-You can change the port served by setting the ODDMU_PORT environment variable.\&
-.PP
-You can change the address served by setting the ODDMU_ADDRESS environment
-variable to either an IPv4 address or an IPv6 address.\& If ODDMU_ADDRESS is
-unset, then the program listens on all available unicast addresses, both IPv4
-and IPv6.\& Here are a few example addresses:
-.PP
-.nf
-.RS 4
-ODDMU_ADDRESS=127\&.0\&.0\&.1      # The loopback IPv4 address\&.
-ODDMU_ADDRESS=2001:db8::3:1  # An IPv6 address\&.
-.fi
-.RE
-.PP
-See the Socket Activation section for an alternative method of listening which
-supports Unix-domain sockets.\&
-.PP
-In order to limit language-detection to the languages you actually use, set the
-environment variable ODDMU_LANGUAGES to a comma-separated list of ISO 639-1
-codes, e.\&g.\& "en" or "en,de,fr,pt".\&
-.PP
-You can enable webfinger to link fediverse accounts to their correct profile
-pages by setting ODDMU_WEBFINGER to "1".\& See \fIoddmu\fR(5).\&
-.PP
-If you use secret subdirectories, you cannot rely on the web server to hide
-those pages because some actions such as searching and archiving include
-subdirectories.\& They act upon a whole tree of pages, not just a single page.\& The
-ODDMU_FILTER can be used to exclude subdirectories from such tree actions.\& See
-\fIoddmu-filter\fR(7) and \fIoddmu-apache\fR(5).\&
-.PP
-.SH Socket Activation
-.PP
-Instead of specifying ODDMU_ADDRESS or ODDMU_PORT, you can start the service
-through socket activation.\& The advantage of this method is that you can use a
-Unix-domain socket instead of a TCP socket, and the permissions and ownership of
-the socket are set before the program starts.\& See \fIoddmu.\&service\fR(5) and
-\fIoddmu-apache\fR(5) for an example of how to use socket activation with a
-Unix-domain socket under systemd and Apache.\&
-.PP
-.SH SECURITY
-.PP
-If the machine you are running Oddmu on is accessible from the Internet, you
-must secure your installation.\& The best way to do this is use a regular web
-server as a reverse proxy.\&
-.PP
-See \fIoddmu-apache\fR(5) for an example.\&
-.PP
-Oddmu assumes that all the users that can edit pages or upload files are trusted
-users and therefore their content is trusted.\& Therefore, Oddmu doesn'\&t perform
-HTML sanitization!\&
-.PP
-For an extra dose of security, consider using a Unix-domain socket.\&
-.PP
-.SH OPTIONS
-.PP
-Oddmu can be run on the command-line using various subcommands.\&
-.PP
-.PD 0
-.IP \(bu 4
-to generate the HTML for a single page, see \fIoddmu-html\fR(1)
-.IP \(bu 4
-to generate the HTML for the entire site, using Oddmu as a static site
-generator, see \fIoddmu-static\fR(1)
-.IP \(bu 4
-to search a regular expression and replace it across all files, see
-\fIoddmu-replace\fR(1)
-.IP \(bu 4
-to emulate a search of the files, see \fIoddmu-search\fR(1); to understand how the
-search engine indexes pages and how it sorts and scores results, see
-\fIoddmu-search\fR(7)
-.IP \(bu 4
-to find missing pages (local links that go nowhere), see \fIoddmu-missing\fR(1)
-.IP \(bu 4
-to add links to changes, index and hashtag pages to pages you created locally,
-see \fIoddmu-notify\fR(1)
-.PD
-.PP
-.SH EXAMPLE
-.PP
-When saving a page, the page name is take from the URL and the page content is
-taken from the "body" form parameter.\& To illustrate, here'\&s how to edit a page
-using \fIcurl\fR(1):
-.PP
-.nf
-.RS 4
-curl --form body="Did you bring a towel?" 
-  http://localhost:8080/save/welcome
-.fi
-.RE
-.PP
-To compute the space used by your setup, use regular tools:
-.PP
-.nf
-.RS 4
-du --exclude=\&'*/.*\&' --exclude \&'*~\&' --block-size=M
-.fi
-.RE
-.PP
-.SH DESIGN
-.PP
-This is a minimal wiki.\& There is no version history.\& It'\&s well suited as a
-\fIsecondary\fR medium: collaboration and conversation happens elsewhere, in chat,
-on social media.\& The wiki serves as the text repository that results from these
-discussions.\&
-.PP
-The idea is that the webserver handles as many tasks as possible.\& It logs
-requests, does rate limiting, handles encryption, gets the certificates, and so
-on.\& The web server acts as a reverse proxy and the wiki ends up being a content
-management system with almost no structure – or endless malleability, depending
-on your point of view.\& See \fIoddmu-apache\fR(5).\&
-.PP
-.SH NOTES
-.PP
-Page names are filenames with ".\&md" appended.\& If your filesystem cannot handle
-it, it can'\&t be a page name.\& Filenames can contain slashes and Oddmu creates
-subdirectories as necessary.\&
-.PP
-Files may not end with a tilde ('\&~'\&) – these are backup files.\& When saving pages
-and file uploads, the old file renamed to the backup file unless the backup file
-is less than an hour old, thus collapsing all edits made in an hour into a
-single diff when comparing backup and current version.\&
-.PP
-The \fBindex\fR page is the default page.\& People visiting the "root" of the site are
-redirected to "/view/index".\&
-.PP
-The \fBchanges\fR page is where links to new and changed files are added.\& As an
-author, you can prevent this from happening by deselecting the checkbox "Add
-link to the list of changes.\&" The changes page can be edited like every other
-page, so it'\&s easy to undo mistakes.\&
-.PP
-Links on the changes page are grouped by date.\& When new links are added, the
-current date of the machine Oddmu is running on is used.\& If a link already
-exists on the changes page, it is moved up to the current date.\& If that leaves
-an old date without any links, that date heading is removed.\&
-.PP
-If you want to link to the changes page, you need to do this yourself.\& Add a
-link from the index, for example.\& The "view.\&html" template currently doesn'\&t do
-it.\& See \fIoddmu-templates\fR(5) if you want to add the link to the template.\&
-.PP
-A page whose name starts with an ISO date (YYYY-MM-DD, e.\&g.\& "2023-10-28") is
-called a \fBblog\fR page.\& When creating or editing blog pages, links to it are added
-from other pages.\&
-.PP
-If the blog page name starts with the current year, a link is created from the
-index page back to the blog page being created or edited.\& Again, you can prevent
-this from happening by deselecting the checkbox "Add link to the list of
-changes.\&" The index page can be edited like every other page, so it'\&s easy to
-undo mistakes.\&
-.PP
-For every \fBhashtag\fR used, another link might be created.\& If a page named like
-the hashtag exists, a backlink is added to it, linking to the new or edited blog
-page.\&
-.PP
-If a link to the new or edited blog page already exists but it'\&s title is no
-longer correct, it is updated.\&
-.PP
-New links added for blog pages are added at the top of the first unnumbered list
-using the asterisk ('\&*'\&).\& If no such list exists, a new one is started at the
-bottom of the page.\& This allows you to have a different unnumbered list further
-up on the page, as long as it uses the minus for items ('\&-'\&).\&
-.PP
-Changes made locally do not create any links on the changes page, the index page
-or on any hashtag pages.\& See \fIoddmu-notify\fR(1) for a way to add the necessary
-links to the changes page and possibly to the index and hashtag pages.\&
-.PP
-A hashtag consists of a number sign ('\&#'\&) followed by Unicode letters, numbers
-or the underscore ('\&_'\&).\& Thus, a hashtag ends with punctuation or whitespace.\&
-.PP
-The page names, titles and hashtags are loaded into memory when the server
-starts.\& If you have a lot of pages, this takes a lot of memory.\&
-.PP
-Oddmu watches the working directory and any subdirectories for changes made
-directly.\& Thus, in theory, it'\&s not necessary to restart it after making such
-changes.\&
-.PP
-You cannot edit uploaded files.\& If you upload a file called "hello.\&txt" and
-attempt to edit it by using "/edit/hello.\&txt" you create a page with the name
-"hello.\&txt.\&md" instead.\&
-.PP
-In order to delete uploaded files via the web, create an empty file and upload
-it.\& In order to delete a wiki page, save an empty page.\&
-.PP
-Note that some HTML file names are special: they act as templates.\& See
-\fIoddmu-templates\fR(5) for their names and their use.\&
-.PP
-.SH SEE ALSO
-.PP
-.PD 0
-.IP \(bu 4
-\fIoddmu\fR(5), about the markup syntax and how feeds are generated based on link
-lists
-.IP \(bu 4
-\fIoddmu-releases\fR(7), on what features are part of the latest release
-.IP \(bu 4
-\fIoddmu-filter\fR(7), on how to treat subdirectories as separate sites
-.IP \(bu 4
-\fIoddmu-search\fR(7), on how search works
-.IP \(bu 4
-\fIoddmu-templates\fR(5), on how to write the HTML templates
-.PD
-.PP
-If you run Oddmu as a web server:
-.PP
-.PD 0
-.IP \(bu 4
-\fIoddmu-apache\fR(5), on how to set up Apache as a reverse proxy
-.IP \(bu 4
-\fIoddmu-nginx\fR(5), on how to set up freenginx as a reverse proxy
-.IP \(bu 4
-\fIoddmu.\&service\fR(5), on how to run the service under systemd
-.PD
-.PP
-If you run Oddmu as a static site generator or pages offline and sync them with
-Oddmu running as a webserver:
-.PP
-.PD 0
-.IP \(bu 4
-\fIoddmu-html\fR(1), on how to render a page from the command-line
-.IP \(bu 4
-\fIoddmu-list\fR(1), on how to list pages and titles from the command-line
-.IP \(bu 4
-\fIoddmu-missing\fR(1), on how to find broken local links from the command-line
-.IP \(bu 4
-\fIoddmu-notify\fR(1), on updating index, changes and hashtag pages from the
-command-line
-.IP \(bu 4
-\fIoddmu-replace\fR(1), on how to search and replace text from the command-line
-.IP \(bu 4
-\fIoddmu-search\fR(1), on how to run a search from the command-line
-.IP \(bu 4
-\fIoddmu-static\fR(1), on generating a static site from the command-line
-.IP \(bu 4
-\fIoddmu-version\fR(1), on how to get all the build information from the binary
-.PD
-.PP
-.SH AUTHORS
-.PP
-Maintained by Alex Schroeder <alex@gnu.\&org>.\&

man/oddmu.1.txt

@@ -4,12 +4,14 @@ ODDMU(1)
 
 oddmu - a wiki server
 
-Oddmu is sometimes written Oddµ because µ is the letter mu.
+Oddmu is sometimes written Oddμ because μ is the letter mu.
 
 # SYNOPSIS
 
 *oddmu*
 
+*oddmu* _subcommand_ [_arguments_...]
+
 # DESCRIPTION
 
 Oddmu can be used as a static site generator, turning Markdown files into HTML
@@ -47,12 +49,14 @@ directory:
 - _/view/dir/name.rss_ shows  the RSS feed for the pages linked
 - _/diff/dir/name_ shows the last change to a page
 - _/edit/dir/name_ shows a form to edit a page
+- _/preview/dir/name_ shows a preview of a page edit and the form to edit it
 - _/save/dir/name_ saves an edit
 - _/add/dir/name_ shows a form to add to a page
 - _/append/dir/name_ appends an addition to a page
 - _/upload/dir/name_ shows a form to upload a file
 - _/drop/dir/name_ saves an upload
 - _/search/dir/?q=term_ to search for a term
+- _/sitemap.xml_ to list the links to all the pages
 - _/archive/dir/name.zip_ to download a zip file of a directory
 
 When calling the _save_ and _append_ action, the page name is taken from the URL
@@ -65,7 +69,7 @@ curl --form body="Did you bring a towel?" \
 ```
 
 When calling the _drop_ action, the query parameters used are _name_ for the
-target filename, _file_ for the file to upload. If the query parameter
+target filename and _file_ for the file to upload. If the query parameter
 _maxwidth_ is set, an attempt is made to decode and resize the image. JPG, PNG,
 WEBP and HEIC files can be decoded. Only JPG and PNG files can be encoded,
 however. If the target name ends in _.jpg_, the _quality_ query parameter is
@@ -103,18 +107,8 @@ curl --remote-name 'http://localhost:8080/archive/man/man.zip
 
 # CONFIGURATION
 
-The template files are the HTML files in the working directory:
-
-- _view.html_ shows a page
-- _diff.html_ shows the last change to a page
-- _edit.html_ shows a form to edit a page
-- _add.html_ shows a form to add to a page
-- _upload.html_ shows a form to upload a file
-- _search.html_ shows the search results
-- _static.html_ is used to generate a static site
-- _feed.html_ is used to generate a RSS feed
-
-Please change the templates!
+The template files are the HTML files in the working directory. Please change
+these templates!
 
 The first change you should make is to replace the name and email address in the
 footer of _view.html_. Look for "Your Name" and "example.org".
@@ -159,21 +153,20 @@ _oddmu-filter_(7) and _oddmu-apache_(5).
 Instead of specifying ODDMU_ADDRESS or ODDMU_PORT, you can start the service
 through socket activation. The advantage of this method is that you can use a
 Unix-domain socket instead of a TCP socket, and the permissions and ownership of
-the socket are set before the program starts. See _oddmu.service_(5) and
-_oddmu-apache_(5) for an example of how to use socket activation with a
-Unix-domain socket under systemd and Apache.
+the socket are set before the program starts. See _oddmu.service_(5),
+_oddmu-apache_(5) and _oddmu-nginx_(5) for an example of how to use socket
+activation with a Unix-domain socket under systemd and Apache.
 
 # SECURITY
 
 If the machine you are running Oddmu on is accessible from the Internet, you
 must secure your installation. The best way to do this is use a regular web
-server as a reverse proxy.
-
-See _oddmu-apache_(5) for an example.
+server as a reverse proxy. See _oddmu-apache_(5) and _oddmu-nginx_(5) for
+example configurations.
 
 Oddmu assumes that all the users that can edit pages or upload files are trusted
-users and therefore their content is trusted. Therefore, Oddmu doesn't perform
-HTML sanitization!
+users and therefore their content is trusted. Oddmu does not perform HTML
+sanitization!
 
 For an extra dose of security, consider using a Unix-domain socket.
 
@@ -184,16 +177,22 @@ Oddmu can be run on the command-line using various subcommands.
 - to generate the HTML for a single page, see _oddmu-html_(1)
 - to generate the HTML for the entire site, using Oddmu as a static site
   generator, see _oddmu-static_(1)
-- to search a regular expression and replace it across all files, see
-  _oddmu-replace_(1)
+- to export the HTML for the entire site in one big feed, see _oddmu-export_(1)
 - to emulate a search of the files, see _oddmu-search_(1); to understand how the
   search engine indexes pages and how it sorts and scores results, see
   _oddmu-search_(7)
+- to search a regular expression and replace it across all files, see
+  _oddmu-replace_(1)
+- to learn what the most popular hashtags are, see _oddmu-hashtags_(1)
+- to print a table of contents (TOC) for a page, see _oddmu-toc_(1)
+- to list the outgoing links for a page, see _oddmu-links_(1)
 - to find missing pages (local links that go nowhere), see _oddmu-missing_(1)
+- to list all the pages with name and title, see _oddmu-list_(1)
 - to add links to changes, index and hashtag pages to pages you created locally,
   see _oddmu-notify_(1)
+- to display build information, see _oddmu-version_(1)
 
-# EXAMPLE
+# EXAMPLES
 
 When saving a page, the page name is take from the URL and the page content is
 taken from the "body" form parameter. To illustrate, here's how to edit a page
@@ -230,9 +229,10 @@ it, it can't be a page name. Filenames can contain slashes and Oddmu creates
 subdirectories as necessary.
 
 Files may not end with a tilde ('~') – these are backup files. When saving pages
-and file uploads, the old file renamed to the backup file unless the backup file
-is less than an hour old, thus collapsing all edits made in an hour into a
-single diff when comparing backup and current version.
+and file uploads, the old file is renamed to the backup file unless the backup
+file is less than an hour old, thus collapsing all edits made in an hour into a
+single diff when comparing backup and current version. The backup also gets an
+updated timestamp so that subsequent edits don't immediately overwrite it.
 
 The *index* page is the default page. People visiting the "root" of the site are
 redirected to "/view/index".
@@ -310,21 +310,30 @@ If you run Oddmu as a web server:
 
 - _oddmu-apache_(5), on how to set up Apache as a reverse proxy
 - _oddmu-nginx_(5), on how to set up freenginx as a reverse proxy
+- _oddmu-webdav_(5), on how to set up Apache as a Web-DAV server
 - _oddmu.service_(5), on how to run the service under systemd
 
 If you run Oddmu as a static site generator or pages offline and sync them with
 Oddmu running as a webserver:
 
-- _oddmu-html_(1), on how to render a page from the command-line
-- _oddmu-list_(1), on how to list pages and titles from the command-line
-- _oddmu-missing_(1), on how to find broken local links from the command-line
-- _oddmu-notify_(1), on updating index, changes and hashtag pages from the
-  command-line
-- _oddmu-replace_(1), on how to search and replace text from the command-line
-- _oddmu-search_(1), on how to run a search from the command-line
-- _oddmu-static_(1), on generating a static site from the command-line
+- _oddmu-hashtags_(1), on working with hashtags
+- _oddmu-html_(1), on how to render a page
+- _oddmu-feed_(1), on how to render a feed
+- _oddmu-list_(1), on how to list pages and titles
+- _oddmu-links_(1), on how to list the outgoing links for a page
+- _oddmu-missing_(1), on how to find broken local links
+- _oddmu-notify_(1), on updating index, changes and hashtag pages
+- _oddmu-replace_(1), on how to search and replace text
+- _oddmu-search_(1), on how to run a search
+- _oddmu-sitemap_(1), on generating a static sitemap.xml
+- _oddmu-static_(1), on generating a static site
+- _oddmu-toc_(1), on how to list the table of contents (toc) a page
 - _oddmu-version_(1), on how to get all the build information from the binary
 
+If you want to stop using Oddmu:
+
+- _oddmu-export_(1), on how to export all the files as one big RSS file
+
 # AUTHORS
 
 Maintained by Alex Schroeder <alex@gnu.org>.

man/oddmu.5

@@ -5,7 +5,7 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU" "5" "2024-02-17" "File Formats Manual"
+.TH "ODDMU" "5" "2025-03-05" "File Formats Manual"
 .PP
 .SH NAME
 .PP
@@ -28,16 +28,15 @@ The page name has to be percent-encoded.\& See the section "Percent Encoding".\&
 If you link to the actual Markdown file (with the ".\&md" extension), then Oddmu
 serves the Markdown file!\&
 .PP
-There are three Oddµ-specific extensions: local links, hashtags and fediverse
+There are three Oddμ-specific extensions: local links, hashtags and fediverse
 account links.\& The Markdown library used features some additional extensions,
 most importantly tables and definition lists.\&
 .PP
 .SS Local links
 .PP
-Local links use double square brackets [[like this]].\& Oddmu does not treat
-underscores like spaces, so [[like this]] and [[like_this]] link to different
-destinations and are served by different files: "like this.\&md" and
-"like_this.\&md".\&
+Local links use double square brackets.\& Oddmu does not treat underscores like
+spaces, so "[[like this]]" and "[[like_this]]" link to different destinations
+and are served by different files: "like this.\&md" and "like_this.\&md".\&
 .PP
 .SS Hashtags
 .PP
@@ -90,12 +89,12 @@ Internet
 .SS Fediverse account links
 .PP
 Fediverse accounts look a bit like an at sign followed by an email address, e.\&g.\&
-@alex@alexschroeder.\&ch.\& When rendering a page, these turn into a username linked
-to a profile page.\& In this case, "@alex" would be linked to
+"@alex@alexschroeder.\&ch".\& When rendering a page, these turn into a username
+linked to a profile page.\& In this case, "@alex" would be linked to
 "https://alexschroeder.\&ch/users/alex".\&
 .PP
 In many cases, this works as is.\& In reality, however, the link to the profile
-page needs to be retrieved via webfinger.\& Oddµ does that in the background, and
+page needs to be retrieved via webfinger.\& Oddμ does that in the background, and
 as soon as the information is available, the actual profile link is used when
 pages are rendered.\& In the example above, the result would be
 "https://social.\&alexschroeder.\&ch/@alex".\&
@@ -118,7 +117,7 @@ autolinking of "naked" URLs are supported
 .IP \(bu 4
 strikethrough using two tildes is supported (~~like this~~)
 .IP \(bu 4
-it is strict about prefix heading rules
+a space is required between the last # and the text for headings
 .IP \(bu 4
 you can specify an id for headings ({#id})
 .IP \(bu 4
@@ -127,12 +126,12 @@ trailing backslashes turn into line breaks
 .PP
 .SH FEEDS
 .PP
-Every file can be viewed as feed by using the extension ".\&rss".\& The feed items
+Every file can be viewed as a feed by using the extension ".\&rss".\& The feed items
 are based on links in bullet lists using the asterix ("*").\& The items must
 point to local pages.\& This is why the link may not contain two forward slashes
 ("//").\&
 .PP
-Assume this is the index page.\& The feed would be "/view/index.\&rss".\& It would
+Below is an example index page.\& The feed would be "/view/index.\&rss".\& It would
 contain the pages "Arianism", "Donatism" and "Monophysitism" but it would not
 contain the pages "Feed" and "About" since the list items don'\&t start with an
 asterix.\&
@@ -154,7 +153,8 @@ Recent posts:
 .fi
 .RE
 .PP
-The feed contains at most 10 items, starting at the top.\&
+The feed contains at most 10 items, starting at the top.\& Thus, new items must be
+added at the beginning of the list.\&
 .PP
 .SH PERCENT ENCODING
 .PP

man/oddmu.5.txt

@@ -19,16 +19,15 @@ The page name has to be percent-encoded. See the section "Percent Encoding".
 If you link to the actual Markdown file (with the ".md" extension), then Oddmu
 serves the Markdown file!
 
-There are three Oddµ-specific extensions: local links, hashtags and fediverse
+There are three Oddμ-specific extensions: local links, hashtags and fediverse
 account links. The Markdown library used features some additional extensions,
 most importantly tables and definition lists.
 
 ## Local links
 
-Local links use double square brackets [[like this]]. Oddmu does not treat
-underscores like spaces, so [[like this]] and [[like_this]] link to different
-destinations and are served by different files: "like this.md" and
-"like_this.md".
+Local links use double square brackets. Oddmu does not treat underscores like
+spaces, so "[[like this]]" and "[[like_this]]" link to different destinations
+and are served by different files: "like this.md" and "like_this.md".
 
 ## Hashtags
 
@@ -75,12 +74,12 @@ Internet
 ## Fediverse account links
 
 Fediverse accounts look a bit like an at sign followed by an email address, e.g.
-@alex@alexschroeder.ch. When rendering a page, these turn into a username linked
-to a profile page. In this case, "@alex" would be linked to
+"\@alex@alexschroeder.ch". When rendering a page, these turn into a username
+linked to a profile page. In this case, "@alex" would be linked to
 "https://alexschroeder.ch/users/alex".
 
 In many cases, this works as is. In reality, however, the link to the profile
-page needs to be retrieved via webfinger. Oddµ does that in the background, and
+page needs to be retrieved via webfinger. Oddμ does that in the background, and
 as soon as the information is available, the actual profile link is used when
 pages are rendered. In the example above, the result would be
 "https://social.alexschroeder.ch/@alex".
@@ -97,18 +96,18 @@ The Markdown processor comes with a few extensions:
 - fenced code blocks are supported
 - autolinking of "naked" URLs are supported
 - strikethrough using two tildes is supported (~~like this~~)
-- it is strict about prefix heading rules
+- a space is required between the last # and the text for headings
 - you can specify an id for headings ({#id})
 - trailing backslashes turn into line breaks
 
 # FEEDS
 
-Every file can be viewed as feed by using the extension ".rss". The feed items
+Every file can be viewed as a feed by using the extension ".rss". The feed items
 are based on links in bullet lists using the asterix ("\*"). The items must
 point to local pages. This is why the link may not contain two forward slashes
 ("//").
 
-Assume this is the index page. The feed would be "/view/index.rss". It would
+Below is an example index page. The feed would be "/view/index.rss". It would
 contain the pages "Arianism", "Donatism" and "Monophysitism" but it would not
 contain the pages "Feed" and "About" since the list items don't start with an
 asterix.
@@ -128,7 +127,8 @@ Recent posts:
 * [Monophysitism](monophysitism)
 ```
 
-The feed contains at most 10 items, starting at the top.
+The feed contains at most 10 items, starting at the top. Thus, new items must be
+added at the beginning of the list.
 
 # PERCENT ENCODING
 

man/oddmu.service.5

@@ -5,7 +5,7 @@
 .nh
 .ad l
 .\" Begin generated content:
-.TH "ODDMU.SERVICE" "5" "2024-02-17"
+.TH "ODDMU.SERVICE" "5" "2025-03-14"
 .PP
 .SH NAME
 .PP
@@ -32,13 +32,14 @@ all the templates files ending in ".\&html" from the source distribution to
 If you want to keep everything in one place, copy the binary "oddmu" and the
 service file "oddmu.\&service" to "/home/oddmu", too.\&
 .PP
-Edit the `oddmu.\&service` file.\& These are the lines you most likely have to take
+Edit the "oddmu.\&service" file.\& These are the lines you most likely have to take
 care of:
 .PP
 .nf
 .RS 4
 ExecStart=/home/oddmu/oddmu
 WorkingDirectory=/home/oddmu
+ReadWritePaths=/home/oddmu
 Environment="ODDMU_PORT=8080"
 Environment="ODDMU_WEBFINGER=1"
 .fi
@@ -48,8 +49,7 @@ Install the service file and enable it:
 .PP
 .nf
 .RS 4
-ln -s /home/oddmu/oddmu\&.service /etc/systemd/system/
-systemctl enable --now oddmu
+sudo systemctl enable --now \&./oddmu\&.service
 .fi
 .RE
 .PP
@@ -71,15 +71,6 @@ journalctl --follow --unit oddmu
 .fi
 .RE
 .PP
-For it to restart when the server reboots:
-.PP
-.nf
-.RS 4
-sudo ln -sf /home/oddmu/oddmu\&.service 
-  /etc/systemd/system/multi-user\&.target\&.wants/
-.fi
-.RE
-.PP
 .SH Socket Activation
 .PP
 Alternatively, you can let systemd handle the creation of the listening socket,
@@ -91,19 +82,136 @@ tells systemd to pass the socket to the service as its standard input.\&
 "Accept=no" tells systemd to pass a listening socket, rather than to try calling
 Oddmu for each connection.\&
 .PP
-The instructions for starting and enabling the systemd service are almost
-exactly the same as those in the previous section, with "oddmu.\&service" replaced
-by "oddmu-unix-domain.\&service".\& You'\&ll also need to run the following:
+Instead of using "oddmu.\&service", you need to use "oddmu-unix-domain.\&socket" and
+"oddmu-unix-domain.\&service".\&
+.PP
+The unit file for the socket defines a file name.\& You probably need to create
+the directory or change the file name.\&
 .PP
 .nf
 .RS 4
-ln -s /home/oddmu/oddmu-unix-domain\&.socket /etc/systemd/system
+sudo mkdir /run/oddmu
 .fi
 .RE
 .PP
+The unit file for the service defines where the Oddmu binary is and where the
+data directory is.\& These are the lines you most likely have to take care of:
+.PP
+.nf
+.RS 4
+ExecStart=/home/oddmu/oddmu
+WorkingDirectory=/home/oddmu
+ReadWritePaths=/home/oddmu
+Environment="ODDMU_PORT=8080"
+Environment="ODDMU_WEBFINGER=1"
+.fi
+.RE
+.PP
+To install, enable and start both units:
+.PP
+.nf
+.RS 4
+sudo systemctl enable --now \&./oddmu-unix-domain\&.socket
+sudo systemctl enable --now \&./oddmu-unix-domain\&.service
+.fi
+.RE
+.PP
+To test just the unix domain socket, use \fIncat(1)\fR:
+.PP
+.nf
+.RS 4
+echo -e "GET /view/index HTTP/1\&.1rnHost: localhostrnrn" 
+  | ncat --unixsock /run/oddmu/oddmu\&.sock
+.fi
+.RE
+.PP
+Now you need to set up your web browser to use the Unix domain socket.\& See
+\fIoddmu-apache\fR(5) or \fIoddmu-nginx\fR(5) for example configurations.\&
+.PP
+.SS A personal wiki
+.PP
+On a single user machine, it might be useful to have a single wiki for the main
+user available.\& In order to do this, setup a "user" unit using systemd and save
+the following as "user-unix-domain.\&service":
+.PP
+.nf
+.RS 4
+[Unit]
+Description=Oddmu
+After=network\&.target
+[Install]
+WantedBy=default\&.target
+[Service]
+Type=simple
+Restart=always
+StandardOutput=journal
+StandardError=journal
+ExecStart=/home/alex/src/oddmu/oddmu
+WorkingDirectory=/home/alex/wiki
+Environment="ODDMU_LANGUAGES=de,en"
+.fi
+.RE
+.PP
+Make sure to change the "ExecStart" entry so that it points to your copy of the
+Oddmu binary.\&
+.PP
+Since this is a user service, the same user can edit the files using their
+favourite text editor.\&
+.PP
+Install it:
+.PP
+.nf
+.RS 4
+systemctl --user enable --now \&./user-unix-domain\&.service
+.fi
+.RE
+.PP
+To examine the log:
+.PP
+.nf
+.RS 4
+journalctl --user --unit user-unix-domain\&.service
+.fi
+.RE
+.PP
+Note that no sudo is required!\&
+.PP
+.SS Using the priviledged port 80
+.PP
+When running a personal wiki, you can have the oddmu binary listen on port 80,
+the standard HTTP port.\& It is not really worth the effort: It means that you can
+visit "http://localhost/" instead of "http://localhost:8080".\& Nevertheless, if
+you'\&re interested in giving it a try, here'\&s how to do it.\&
+.PP
+The service definition must specify the new port:
+.PP
+Environment="ODDMU_PORT=80"
+.PP
+Since this is a privileged port, the binary needs an extra capability for an
+ordinary user to do this.\&
+.PP
+.nf
+.RS 4
+sudo setcap \&'cap_net_bind_service=+ep\&' oddmu
+.fi
+.RE
+.PP
+Note that as soon as you recompile, the capability is gone again and the above
+must be repeated.\&
+.PP
+.SH SECURITY
+.PP
+Only allow direct access to Oddmu on systems and networks where you'\&re OK with
+every user editing the pages.\& On the open web, this is not true.\& If your server
+is on the open web, always run Oddmu behind a regular web server acting as a
+reverse proxy, limiting regular visitors to read-only access.\& This means that
+the regular web server listens on the regular privileged ports (80 for HTTP,
+443 for HTTPS) and passes requests to Oddmu on some other port.\&
+.PP
 .SH SEE ALSO
 .PP
-\fIoddmu\fR(1), \fIsystemd.\&exec\fR(5), \fIsystemd.\&socket(5), \fRcapabilities_(7)
+\fIoddmu\fR(1), \fIoddmu-apache\fR(5), \fIoddmu-nginx\fR(5), \fIsystemd.\&exec\fR(5),
+\fIsystemd.\&socket\fR(5), \fIcapabilities\fR(7)
 .PP
 .SH AUTHORS
 .PP

man/oddmu.service.5.txt

@@ -23,12 +23,13 @@ all the templates files ending in ".html" from the source distribution to
 If you want to keep everything in one place, copy the binary "oddmu" and the
 service file "oddmu.service" to "/home/oddmu", too.
 
-Edit the `oddmu.service` file. These are the lines you most likely have to take
+Edit the "oddmu.service" file. These are the lines you most likely have to take
 care of:
 
 ```
 ExecStart=/home/oddmu/oddmu
 WorkingDirectory=/home/oddmu
+ReadWritePaths=/home/oddmu
 Environment="ODDMU_PORT=8080"
 Environment="ODDMU_WEBFINGER=1"
 ```
@@ -36,8 +37,7 @@ Environment="ODDMU_WEBFINGER=1"
 Install the service file and enable it:
 
 ```
-ln -s /home/oddmu/oddmu.service /etc/systemd/system/
-systemctl enable --now oddmu
+sudo systemctl enable --now ./oddmu.service
 ```
 
 You should be able to visit the wiki at http://localhost:8080/.
@@ -54,13 +54,6 @@ Follow the log:
 journalctl --follow --unit oddmu
 ```
 
-For it to restart when the server reboots:
-
-```
-sudo ln -sf /home/oddmu/oddmu.service \
-  /etc/systemd/system/multi-user.target.wants/
-```
-
 # Socket Activation
 
 Alternatively, you can let systemd handle the creation of the listening socket,
@@ -72,17 +65,120 @@ tells systemd to pass the socket to the service as its standard input.
 "Accept=no" tells systemd to pass a listening socket, rather than to try calling
 Oddmu for each connection.
 
-The instructions for starting and enabling the systemd service are almost
-exactly the same as those in the previous section, with "oddmu.service" replaced
-by "oddmu-unix-domain.service". You'll also need to run the following:
+Instead of using "oddmu.service", you need to use "oddmu-unix-domain.socket" and
+"oddmu-unix-domain.service".
+
+The unit file for the socket defines a file name. You probably need to create
+the directory or change the file name.
 
 ```
-ln -s /home/oddmu/oddmu-unix-domain.socket /etc/systemd/system
+sudo mkdir /run/oddmu
 ```
 
+The unit file for the service defines where the Oddmu binary is and where the
+data directory is. These are the lines you most likely have to take care of:
+
+```
+ExecStart=/home/oddmu/oddmu
+WorkingDirectory=/home/oddmu
+ReadWritePaths=/home/oddmu
+Environment="ODDMU_PORT=8080"
+Environment="ODDMU_WEBFINGER=1"
+```
+
+To install, enable and start both units:
+
+```
+sudo systemctl enable --now ./oddmu-unix-domain.socket
+sudo systemctl enable --now ./oddmu-unix-domain.service
+```
+
+To test just the unix domain socket, use _ncat(1)_:
+
+```
+echo -e "GET /view/index HTTP/1.1\r\nHost: localhost\r\n\r\n" \
+  | ncat --unixsock /run/oddmu/oddmu.sock
+```
+
+Now you need to set up your web browser to use the Unix domain socket. See
+_oddmu-apache_(5) or _oddmu-nginx_(5) for example configurations.
+
+## A personal wiki
+
+On a single user machine, it might be useful to have a single wiki for the main
+user available. In order to do this, setup a "user" unit using systemd and save
+the following as "user-unix-domain.service":
+
+```
+[Unit]
+Description=Oddmu
+After=network.target
+[Install]
+WantedBy=default.target
+[Service]
+Type=simple
+Restart=always
+StandardOutput=journal
+StandardError=journal
+ExecStart=/home/alex/src/oddmu/oddmu
+WorkingDirectory=/home/alex/wiki
+Environment="ODDMU_LANGUAGES=de,en"
+```
+
+Make sure to change the "ExecStart" entry so that it points to your copy of the
+Oddmu binary.
+
+Since this is a user service, the same user can edit the files using their
+favourite text editor.
+
+Install it:
+
+```
+systemctl --user enable --now ./user-unix-domain.service
+```
+
+To examine the log:
+
+```
+journalctl --user --unit user-unix-domain.service
+```
+
+Note that no sudo is required!
+
+## Using the priviledged port 80
+
+When running a personal wiki, you can have the oddmu binary listen on port 80,
+the standard HTTP port. It is not really worth the effort: It means that you can
+visit "http://localhost/" instead of "http://localhost:8080". Nevertheless, if
+you're interested in giving it a try, here's how to do it.
+
+The service definition must specify the new port:
+
+Environment="ODDMU_PORT=80"
+
+Since this is a privileged port, the binary needs an extra capability for an
+ordinary user to do this.
+
+```
+sudo setcap 'cap_net_bind_service=+ep' oddmu
+```
+
+Note that as soon as you recompile, the capability is gone again and the above
+must be repeated.
+
+# SECURITY
+
+Only allow direct access to Oddmu on systems and networks where you're OK with
+every user editing the pages. On the open web, this is not true. If your server
+is on the open web, always run Oddmu behind a regular web server acting as a
+reverse proxy, limiting regular visitors to read-only access. This means that
+the regular web server listens on the regular privileged ports (80 for HTTP,
+443 for HTTPS) and passes requests to Oddmu on some other port.
+
 # SEE ALSO
 
-_oddmu_(1), _systemd.exec_(5), _systemd.socket(5), _capabilities_(7)
+_oddmu_(1), _oddmu-apache_(5), _oddmu-nginx_(5), _systemd.exec_(5),
+_systemd.socket_(5), _capabilities_(7)
 
 # AUTHORS
 

man/scdoc-to-markdown

@@ -0,0 +1,31 @@
+#!/usr/bin/perl
+use strict;
+use warnings;
+my $literal = 0;
+while (<>) {
+  # switch literal style
+  $literal = !$literal if /^```$/;
+  if ($literal) {
+    print;
+    next;
+  }
+  # bold
+  s/\*([^*]+)\*/**$1**/g;
+  # link to oddmu man pages (before italics)
+  s/_(oddmu[a-z.-]*)_\(([1-9])\)/[$1($2)]($1.$2)/g;
+  # italic
+  s/\b_([^_]+)_\b/*$1*/g;
+  # move all H1 headers to H2
+  s/^# (.*)/"## ".ucfirst(lc($1))/e;
+  # the new H1 title
+  s/^([A-Z.-]*\([1-9]\))( ".*")?$/"# ".lc($1)/e;
+  # quoted URLs
+  s/"(http.*?)"/`$1`/g;
+  # quoted wiki links
+  s/"(\[\[[^]]*\]\])"/`$1`/g;
+  # quoted Markdown links
+  s/"(\[.*?\]\(.*?\))"/`$1`/g;
+  # protect hashtags
+  s/#([^ #])/\\#$1/;
+  print;
+}

man_test.go

@@ -1,29 +1,34 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"go/parser"
 	"go/token"
 	"io/fs"
 	"os"
 	"path/filepath"
+	"regexp"
 	"slices"
 	"sort"
 	"strings"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
+// Does oddmu(1) link to all the other man pages?
 func TestManPages(t *testing.T) {
 	b, err := os.ReadFile("man/oddmu.1.txt")
 	main := string(b)
 	assert.NoError(t, err)
-	filepath.Walk("man", func(path string, info fs.FileInfo, err error) error {
+	count := 0
+	filepath.Walk("man", func(fp string, info fs.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
-		if strings.HasSuffix(path, ".txt") &&
-			path != "man/oddmu.1.txt" {
-			s := strings.TrimPrefix(path, "man/")
+		if strings.HasSuffix(fp, ".txt") &&
+			fp != "man/oddmu.1.txt" {
+			count++
+			s := strings.TrimPrefix(fp, "man/")
 			s = strings.TrimSuffix(s, ".txt")
 			i := strings.LastIndex(s, ".")
 			ref := "_" + s[:i] + "_(" + s[i+1:] + ")"
@@ -31,40 +36,133 @@ func TestManPages(t *testing.T) {
 		}
 		return nil
 	})
+	assert.Greater(t, count, 0, "no man pages were found")
 }
 
-func TestReadme(t *testing.T) {
-	b, err := os.ReadFile("README.md")
-	main := string(b)
+// Does oddmu-templates(5) mention all the templates?
+func TestManTemplates(t *testing.T) {
+	b, err := os.ReadFile("man/oddmu-templates.5.txt")
+	man := string(b)
 	assert.NoError(t, err)
-	filepath.Walk("man", func(path string, info fs.FileInfo, err error) error {
+	count := 0
+	filepath.Walk(".", func(fp string, info fs.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
-		if strings.HasSuffix(path, ".txt") {
-			s := strings.TrimPrefix(path, "man/")
+		if strings.HasSuffix(fp, ".html") {
+			count++
+			assert.Contains(t, man, fp, fp)
+		}
+		if fp != "." && info.IsDir() {
+			return filepath.SkipDir
+		}
+		return nil
+	})
+	assert.Greater(t, count, 0, "no templates were found")
+}
+
+// Does oddmu-templates(5) mention all the templates?
+func TestManTemplateAttributess(t *testing.T) {
+	mfp := "man/oddmu-templates.5.txt"
+	b, err := os.ReadFile(mfp)
+	man := string(b)
+	assert.NoError(t, err)
+	re := regexp.MustCompile(`{{(?:(?:if|range) )?(\.[A-Z][a-z]*)}}`)
+	filepath.Walk(".", func(fp string, info fs.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if fp != "." && info.IsDir() {
+			return filepath.SkipDir
+		}
+		if !strings.HasSuffix(fp, ".html") {
+			return nil
+		}
+		h, err := os.ReadFile(fp)
+		matches := re.FindAllSubmatch(h, -1)
+		assert.Greater(t, len(matches), 0, "%s contains no attributes", fp)
+		seen := make(map[string]bool)
+		for _, m := range matches {
+			attr := string(m[1])
+			if seen[attr] {
+				continue
+			}
+			seen[attr] = true
+			assert.Contains(t, man, "_{{"+attr+"}}_", "%s does not mention _{{%s}}_", mfp, attr)
+		}
+		assert.NoError(t, err)
+		return nil
+	})
+}
+
+// Does oddmu(1) mention all the actions? We're not going to parse the go file and make sure to catch them all. I tried
+// it, and it's convoluted.
+func TestManActions(t *testing.T) {
+	b, err := os.ReadFile("man/oddmu.1.txt")
+	assert.NoError(t, err)
+	main := string(b)
+	b, err = os.ReadFile("wiki.go")
+	assert.NoError(t, err)
+	wiki := string(b)
+	count := 0
+	// this doesn't match the root handler
+	re := regexp.MustCompile(`\.HandleFunc\("(/[a-z]+/)", makeHandler\([a-z]+Handler, (true|false)(, http\.Method(Get|Post))+\)\)`)
+	for _, match := range re.FindAllStringSubmatch(wiki, -1) {
+		count++
+		var path string
+		if match[2] == "true" {
+			path = "_" + match[1] + "dir/name"
+		} else {
+			path = "_" + match[1] + "dir/"
+		}
+		assert.Contains(t, main, path, path)
+	}
+	assert.Greater(t, count, 0, "no handlers were found")
+	// root handler is manual
+	assert.Contains(t, main, "\n- _/_", "root")
+}
+
+// Does the README link to all the man pages and all the Go source files,
+// excluding the command and test files?
+func TestReadme(t *testing.T) {
+	b, err := os.ReadFile("README.md")
+	readme := string(b)
+	assert.NoError(t, err)
+	count := 0
+	filepath.Walk("man", func(fp string, info fs.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if strings.HasSuffix(fp, ".txt") {
+			count++
+			s := strings.TrimPrefix(fp, "man/")
 			s = strings.TrimSuffix(s, ".txt")
 			i := strings.LastIndex(s, ".")
 			ref := "[" + s[:i] + "(" + s[i+1:] + ")]"
-			assert.Contains(t, main, ref, ref)
+			assert.Contains(t, readme, ref, ref)
 		}
 		return nil
 	})
-	filepath.Walk(".", func(path string, info fs.FileInfo, err error) error {
+	assert.Greater(t, count, 0, "no man pages were found")
+	count = 0
+	filepath.Walk(".", func(fp string, info fs.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
-		if strings.HasSuffix(path, ".go") &&
-			!strings.HasSuffix(path, "_test.go") &&
-			!strings.HasSuffix(path, "_cmd.go") {
-			s := strings.TrimPrefix(path, "./")
+		if strings.HasSuffix(fp, ".go") &&
+			!strings.HasSuffix(fp, "_test.go") &&
+			!strings.HasSuffix(fp, "_cmd.go") {
+			count++
+			s := strings.TrimPrefix(fp, "./")
 			ref := "`" + s + "`"
-			assert.Contains(t, main, ref, ref)
+			assert.Contains(t, readme, ref, ref)
 		}
 		return nil
 	})
+	assert.Greater(t, count, 0, "no source pages were found")
 }
 
+// Does the README document all the dependecies, checking all the all the packages with names containing a period?
 func TestDocumentDependencies(t *testing.T) {
 	b, err := os.ReadFile("README.md")
 	readme := string(b)
@@ -83,6 +181,7 @@ func TestDocumentDependencies(t *testing.T) {
 			}
 		}
 	}
+	assert.Greater(t, len(imports), 0, "no imports found")
 	sort.Slice(imports, func(i, j int) bool { return len(imports[i]) < len(imports[j]) })
 IMPORT:
 	for _, name := range imports {

missing_cmd.go

@@ -4,16 +4,15 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"github.com/gomarkdown/markdown"
-	"github.com/gomarkdown/markdown/ast"
-	"github.com/google/subcommands"
 	"io"
-	"io/fs"
 	"net/url"
 	"os"
 	"path"
-	"path/filepath"
 	"strings"
+
+	"github.com/gomarkdown/markdown"
+	"github.com/gomarkdown/markdown/ast"
+	"github.com/google/subcommands"
 )
 
 type missingCmd struct {
@@ -34,23 +33,25 @@ func (cmd *missingCmd) SetFlags(f *flag.FlagSet) {
 }
 
 func (cmd *missingCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
-	return missingCli(os.Stdout)
-}
-
-func missingCli(w io.Writer) subcommands.ExitStatus {
-	names, err := existingPages()
+	n, err := index.load()
 	if err != nil {
-		fmt.Fprintln(w, err)
+		fmt.Fprintf(os.Stderr, "Index load: %s\n", err)
 		return subcommands.ExitFailure
 	}
+	fmt.Fprintf(os.Stderr, "Indexed %d pages\n", n)
+	return missingCli(os.Stdout, &index)
+}
+
+// missingCli implements the finding of links to missing pages. In order to make testing easier, it takes a Writer and
+// an indexStore. The Writer is important so that test code can provide a buffer instead of os.Stdout; the indexStore is
+// important so that test code can ensure no other test running in parallel can interfere with the list of known pages
+// (by adding or deleting pages).
+func missingCli(w io.Writer, idx *indexStore) subcommands.ExitStatus {
 	found := false
-	for name, isPage := range names {
-		if !isPage {
-			continue
-		}
+	for name := range idx.titles {
 		p, err := loadPage(name)
 		if err != nil {
-			fmt.Fprintf(os.Stderr, "Loading %s: %s\n", p.Name, err)
+			fmt.Fprintf(os.Stderr, "Loading %s: %s\n", name, err)
 			return subcommands.ExitFailure
 		}
 		for _, link := range p.links() {
@@ -66,13 +67,17 @@ func missingCli(w io.Writer) subcommands.ExitStatus {
 				u.Path = strings.TrimSuffix(u.Path, ".md")
 				// pages containing a colon need the ./ prefix
 				u.Path = strings.TrimPrefix(u.Path, "./")
-				// check whether the destinatino is a known page
+				// check whether the destination is a known page
 				destination, err := url.PathUnescape(u.Path)
 				if err != nil {
 					fmt.Fprintf(os.Stderr, "Cannot decode %s: %s\n", link, err)
 					return subcommands.ExitFailure
 				}
-				_, ok := names[destination]
+				_, ok := idx.titles[destination]
+				// links to directories can work
+				if !ok {
+					_, ok = idx.titles[path.Join(destination, "index")]
+				}
 				if !ok {
 					if !found {
 						fmt.Fprintln(w, "Page\tMissing")
@@ -89,31 +94,6 @@ func missingCli(w io.Writer) subcommands.ExitStatus {
 	return subcommands.ExitSuccess
 }
 
-func existingPages() (map[string]bool, error) {
-	names := make(map[string]bool)
-	err := filepath.Walk(".", func(path string, info fs.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-		// skip hidden directories and files
-		if path != "." && strings.HasPrefix(filepath.Base(path), ".") {
-			if info.IsDir() {
-				return filepath.SkipDir
-			} else {
-				return nil
-			}
-		}
-		if strings.HasSuffix(path, ".md") {
-			name := filepath.ToSlash(strings.TrimSuffix(path, ".md"))
-			names[name] = true
-		} else {
-			names[path] = false
-		}
-		return nil
-	})
-	return names, err
-}
-
 // links parses the page content and returns an array of link destinations.
 func (p *Page) links() []string {
 	var links []string
@@ -121,11 +101,19 @@ func (p *Page) links() []string {
 	doc := markdown.Parse(p.Body, parser)
 	ast.WalkFunc(doc, func(node ast.Node, entering bool) ast.WalkStatus {
 		if entering {
-			switch v := node.(type) {
-			case *ast.Link:
+			if v, ok := node.(*ast.Link); ok {
 				link := string(v.Destination)
-				dir := p.Dir()
-				links = append(links, path.Join(dir, link))
+				url, err := url.Parse(link)
+				if err != nil {
+					// no error reporting
+					return ast.GoToNext
+				}
+				if url.IsAbs() {
+					links = append(links, link)
+				} else {
+					dir := p.Dir()
+					links = append(links, path.Join(dir, link))
+				}
 			}
 		}
 		return ast.GoToNext

missing_cmd_test.go

@@ -2,14 +2,15 @@ package main
 
 import (
 	"bytes"
+	"testing"
+
 	"github.com/google/subcommands"
 	"github.com/stretchr/testify/assert"
-	"testing"
 )
 
 func TestMissingCmd(t *testing.T) {
 	b := new(bytes.Buffer)
-	s := missingCli(b)
+	s := missingCli(b, minimalIndex(t))
 	assert.Equal(t, subcommands.ExitSuccess, s)
 	r := `Page	Missing
 index	test

notify_cmd.go

@@ -4,9 +4,11 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"github.com/google/subcommands"
 	"io"
 	"os"
+	"strings"
+
+	"github.com/google/subcommands"
 )
 
 type notifyCmd struct {
@@ -30,8 +32,12 @@ func (cmd *notifyCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface
 }
 
 func notifyCli(w io.Writer, args []string) subcommands.ExitStatus {
-	index.load()
 	for _, name := range args {
+		if !strings.HasSuffix(name, ".md") {
+			fmt.Fprintf(os.Stderr, "%s does not end in '.md'\n", name)
+			return subcommands.ExitFailure
+		}
+		name = name[0 : len(name)-3]
 		p, err := loadPage(name)
 		if err != nil {
 			fmt.Fprintf(w, "Loading %s: %s\n", name, err)

oddmu.service

@@ -7,8 +7,8 @@ WantedBy=multi-user.target
 Type=simple
 Restart=always
 DynamicUser=true
-MemoryMax=100M
-MemoryHigh=120M
+MemoryMax=120M
+MemoryHigh=100M
 ExecStart=/home/oddmu/oddmu
 WorkingDirectory=/home/oddmu
 Environment="ODDMU_PORT=8080"

page.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"bytes"
-	"github.com/microcosm-cc/bluemonday"
 	"html/template"
 	"log"
 	"net/url"
@@ -12,23 +11,30 @@ import (
 	"regexp"
 	"strings"
 	"time"
+
+	"github.com/microcosm-cc/bluemonday"
 )
 
-// Page is a struct containing information about a single page. Title
-// is the title extracted from the page content using titleRegexp.
-// Name is the path without extension (so a path of "foo.md"
-// results in the Name "foo"). Body is the Markdown content of the
-// page and Html is the rendered HTML for that Markdown. Score is a
-// number indicating how well the page matched for a search query.
+// Page is a struct containing information about a single page. Title is the title extracted from the page content using
+// titleRegexp. Name is the path without extension (so a path of "foo.md" results in the Name "foo"). Body is the
+// Markdown content of the page and Html is the rendered HTML for that Markdown.
 type Page struct {
 	Title    string
 	Name     string
 	Body     []byte
-	Html     template.HTML
-	Score    int
+	HTML     template.HTML
 	Hashtags []string
 }
 
+// Link is a struct containing a title and a name. Name is the path without extension (so a path of "foo.md" results in
+// the Name "foo").
+type Link struct {
+	Title string
+	URL   string
+}
+
+// blogRe is a regular expression that matches blog pages. If the filename of a blog page starts with an ISO date
+// (YYYY-MM-DD), then it's a blog page.
 var blogRe = regexp.MustCompile(`^\d\d\d\d-\d\d-\d\d`)
 
 // santizeStrict uses bluemonday to sanitize the HTML away. No elements are allowed except for the b tag because this is
@@ -56,10 +62,10 @@ func nameEscape(s string) string {
 }
 
 // save saves a Page. The path is based on the Page.Name and gets the ".md" extension. Page.Body is saved, without any
-// carriage return characters ("\r"). Page.Title and Page.Html are not saved. There is no caching. Before removing or
+// carriage return characters ("\r"). Page.Title and Page.HTML are not saved. There is no caching. Before removing or
 // writing a file, the old copy is renamed to a backup, appending "~". Errors are not logged but returned.
 func (p *Page) save() error {
-	fp := filepath.FromSlash(p.Name + ".md")
+	fp := filepath.FromSlash(p.Name) + ".md"
 	watches.ignore(fp)
 	s := bytes.ReplaceAll(p.Body, []byte{'\r'}, []byte{})
 	if len(s) == 0 {
@@ -83,9 +89,21 @@ func (p *Page) save() error {
 	return os.WriteFile(fp, s, 0644)
 }
 
-// backup a file by renaming (!) it unless the existing backup is less than an hour old. A backup gets a tilde appended
-// to it ("~"). This is true even if the file refers to a binary file like "image.png" and most applications don't know
-// what to do with a file called "image.png~". This expects a file path. Use filepath.FromSlash(path) if necessary.
+// ModTime returns the last modification time of the page file. If the page does not exist, the current time is
+// returned.
+func (p *Page) ModTime() (time.Time, error) {
+	fp := filepath.FromSlash(p.Name) + ".md"
+	fi, err := os.Stat(fp)
+	if err != nil {
+		return time.Now(), err
+	}
+	return fi.ModTime(), nil
+}
+
+// backup a file by renaming it unless the existing backup is less than an hour old. A backup gets a tilde appended to
+// it ("~"). This is true even if the file refers to a binary file like "image.png" and most applications don't know
+// what to do with a file called "image.png~". This expects a filepath. The backup file gets its modification time set
+// to now so that subsequent edits don't immediately overwrite it again.
 func backup(fp string) error {
 	_, err := os.Stat(fp)
 	if err != nil {
@@ -94,21 +112,26 @@ func backup(fp string) error {
 	bp := fp + "~"
 	fi, err := os.Stat(bp)
 	if err != nil || time.Since(fi.ModTime()).Minutes() >= 60 {
-		return os.Rename(fp, bp)
+		err = os.Rename(fp, bp)
+		if err != nil {
+			return err
+		}
+		ts := time.Now()
+		return os.Chtimes(bp, ts, ts)
 	}
 	return nil
 }
 
 // loadPage loads a Page given a name. The path loaded is that Page.Name with the ".md" extension. The Page.Title is set
-// to the Page.Name (and possibly changed, later). The Page.Body is set to the file content. The Page.Html remains
+// to the Page.Name (and possibly changed, later). The Page.Body is set to the file content. The Page.HTML remains
 // undefined (there is no caching).
-func loadPage(path string) (*Page, error) {
-	path = strings.TrimPrefix(path, "./") // result of a filepath.TreeWalk starting with "."
-	body, err := os.ReadFile(filepath.FromSlash(path + ".md"))
+func loadPage(name string) (*Page, error) {
+	name = strings.TrimPrefix(name, "./") // result of a path.TreeWalk starting with "."
+	body, err := os.ReadFile(filepath.FromSlash(name) + ".md")
 	if err != nil {
 		return nil, err
 	}
-	return &Page{Title: path, Name: path, Body: body}, nil
+	return &Page{Title: name, Name: name, Body: body}, nil
 }
 
 // handleTitle extracts the title from a Page and sets Page.Title, if any. If replace is true, the page title is also
@@ -125,17 +148,10 @@ func (p *Page) handleTitle(replace bool) {
 	}
 }
 
-// score sets Page.Title and computes Page.Score.
-func (p *Page) score(q string) {
-	p.handleTitle(true)
-	p.Score = score(q, string(p.Body)) + score(q, p.Title)
-}
-
-// summarize sets Page.Html to an extract.
+// summarize sets Page.HTML to an extract.
 func (p *Page) summarize(q string) {
 	t := p.plainText()
-	p.Name = nameEscape(p.Name)
-	p.Html = sanitizeStrict(snippets(q, t))
+	p.HTML = sanitizeStrict(snippets(q, t))
 }
 
 // IsBlog returns true if the page name starts with an ISO date
@@ -144,20 +160,53 @@ func (p *Page) IsBlog() bool {
 	return blogRe.MatchString(name)
 }
 
-// Dir returns the directory the page is in. It's either the empty string if the page is in the Oddmu working directory,
-// or it ends in a slash. This is used to create the upload link in "view.html", for example.
+const upperhex = "0123456789ABCDEF"
+
+// Path returns the Page.Name with some characters escaped because html/template doesn't escape those. This is suitable
+// for use in HTML templates.
+func (p *Page) Path() string {
+	return pathEncode(p.Name)
+}
+
+// pathEncode returns the page name with some characters escaped because html/template doesn't escape those. This is
+// suitable for use in HTML templates.
+func pathEncode(s string) string {
+	n := strings.Count(s, ";") + strings.Count(s, ",") + strings.Count(s, "?") + strings.Count(s, "#")
+	if n == 0 {
+		return s
+	}
+	t := make([]byte, len(s)+2*n)
+	j := 0
+	for i := 0; i < len(s); i++ {
+		switch s[i] {
+		case ';', ',', '?', '#':
+			t[j] = '%'
+			t[j+1] = upperhex[s[i]>>4]
+			t[j+2] = upperhex[s[i]&15]
+			j += 3
+		default:
+			t[j] = s[i]
+			j++
+		}
+	}
+	return string(t)
+}
+
+// Dir returns the directory part of the page name, percent-escaped except for the slashes. It's either the empty string
+// if the page is in the Oddmu working directory, or it ends in a slash. This is used to create the upload link in
+// "view.html", for example.
 func (p *Page) Dir() string {
-	d := filepath.Dir(p.Name)
+	d := path.Dir(p.Name)
 	if d == "." {
 		return ""
 	}
-	return d + "/"
+	return pathEncode(d) + "/"
 }
 
-// Base returns the basename of the page name: no directory and no extension. This is used to create the upload link
-// in "view.html", for example.
+// Base returns the  basename of the page  name: no directory, percent-escaped except  for the slashes. This  is used to
+// create the upload link in "view.html", for example.
 func (p *Page) Base() string {
-	n := filepath.Base(p.Name)
+	n := path.Base(p.Name)
 	if n == "." {
 		return ""
 	}
@@ -168,3 +217,27 @@ func (p *Page) Base() string {
 func (p *Page) Today() string {
 	return time.Now().Format(time.DateOnly)
 }
+
+// Parents returns a Link array to parent pages, up the directory structure.
+func (p *Page) Parents() []*Link {
+	links := make([]*Link, 0)
+	index.RLock()
+	defer index.RUnlock()
+	// foo/bar/baz ⇒ index, foo/index
+	elems := strings.Split(p.Name, "/")
+	if len(elems) == 1 {
+		return links
+	}
+	s := ""
+	for i := 0; i < len(elems)-1; i++ {
+		name := s + "index"
+		title, ok := index.titles[name]
+		if !ok {
+			title = "…"
+		}
+		link := &Link{Title: title, URL: strings.Repeat("../", len(elems)-i-1) + "index"}
+		links = append(links, link)
+		s += elems[i] + "/"
+	}
+	return links
+}

page_test.go

@@ -1,9 +1,10 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"regexp"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestPageTitle(t *testing.T) {
@@ -40,3 +41,30 @@ Moonlight floods the aisle`)}
 	// But the backup still exists.
 	assert.FileExists(t, "testdata/dir/moon.md~")
 }
+
+func TestPageParents(t *testing.T) {
+	cleanup(t, "testdata/parents")
+	index.load()
+	p := &Page{Name: "testdata/parents/index", Body: []byte(`# Solar
+The air dances here
+Water puddles flicker and
+disappear anon`)}
+	p.save()
+	p = &Page{Name: "testdata/parents/children/index", Body: []byte(`# Lunar
+Behind running clouds
+Shines cold light from ages past
+And untouchable`)}
+	p.save()
+	p = &Page{Name: "testdata/parents/children/something/other"}
+	// "testdata/parents/children/something/index" is a sibling and doesn't count!
+	parents := p.Parents()
+	assert.Equal(t, "Welcome to Oddμ", parents[0].Title)
+	assert.Equal(t, "../../../../index", parents[0].URL)
+	assert.Equal(t, "…", parents[1].Title)
+	assert.Equal(t, "../../../index", parents[1].URL)
+	assert.Equal(t, "Solar", parents[2].Title)
+	assert.Equal(t, "../../index", parents[2].URL)
+	assert.Equal(t, "Lunar", parents[3].Title)
+	assert.Equal(t, "../index", parents[3].URL)
+	assert.Equal(t, 4, len(parents))
+}

parser.go

@@ -2,17 +2,19 @@ package main
 
 import (
 	"bytes"
+	"net/url"
+	"path"
+
 	"github.com/gomarkdown/markdown"
 	"github.com/gomarkdown/markdown/ast"
 	"github.com/gomarkdown/markdown/html"
 	"github.com/gomarkdown/markdown/parser"
-	"net/url"
 )
 
 // wikiLink returns an inline parser function. This indirection is
 // required because we want to call the previous definition in case
 // this is not a wikiLink.
-func wikiLink(p *parser.Parser, fn func(p *parser.Parser, data []byte, offset int) (int, ast.Node)) func(p *parser.Parser, data []byte, offset int) (int, ast.Node) {
+func wikiLink(fn func(p *parser.Parser, data []byte, offset int) (int, ast.Node)) func(p *parser.Parser, data []byte, offset int) (int, ast.Node) {
 	return func(p *parser.Parser, original []byte, offset int) (int, ast.Node) {
 		data := original[offset:]
 		n := len(data)
@@ -35,16 +37,20 @@ func wikiLink(p *parser.Parser, fn func(p *parser.Parser, data []byte, offset in
 
 // hashtag returns an inline parser function. This indirection is
 // required because we want to receive an array of hashtags found.
+// The hashtags in the array keep their case.
 func hashtag() (func(p *parser.Parser, data []byte, offset int) (int, ast.Node), *[]string) {
 	hashtags := make([]string, 0)
 	return func(p *parser.Parser, data []byte, offset int) (int, ast.Node) {
+		if p.InsideLink {
+			return 0, nil
+		}
 		data = data[offset:]
 		i := 0
 		n := len(data)
 		for i < n && !parser.IsSpace(data[i]) {
 			i++
 		}
-		if i == 0 {
+		if i <= 1 {
 			return 0, nil
 		}
 		hashtags = append(hashtags, string(data[1:i]))
@@ -62,34 +68,34 @@ func hashtag() (func(p *parser.Parser, data []byte, offset int) (int, ast.Node),
 // @webfinger@accounts. It also uses the CommonExtensions and Block Attributes, and no MathJax ($).
 func wikiParser() (*parser.Parser, *[]string) {
 	extensions := (parser.CommonExtensions | parser.AutoHeadingIDs | parser.Attributes) & ^parser.MathJax
-	parser := parser.NewWithExtensions(extensions)
-	prev := parser.RegisterInline('[', nil)
-	parser.RegisterInline('[', wikiLink(parser, prev))
+	p := parser.NewWithExtensions(extensions)
+	prev := p.RegisterInline('[', nil)
+	p.RegisterInline('[', wikiLink(prev))
 	fn, hashtags := hashtag()
-	parser.RegisterInline('#', fn)
+	p.RegisterInline('#', fn)
 	if useWebfinger {
-		parser.RegisterInline('@', accountLink)
+		p.RegisterInline('@', accountLink)
+		parser.EscapeChars = append(parser.EscapeChars, '@')
 	}
-	return parser, hashtags
+	return p, hashtags
 }
 
-// wikiRenderer is a Renderer for Markdown that adds lazy loading of images. This in turn requires an exception for the
-// sanitization policy!
+// wikiRenderer is a Renderer for Markdown that adds lazy loading of images and disables fractions support. Remember
+// that there is no HTML sanitization.
 func wikiRenderer() *html.Renderer {
-	htmlFlags := html.CommonFlags | html.LazyLoadImages
+	// sync with staticPage
+	htmlFlags := html.CommonFlags & ^html.SmartypantsFractions | html.LazyLoadImages
 	opts := html.RendererOptions{Flags: htmlFlags}
 	renderer := html.NewRenderer(opts)
 	return renderer
 }
 
-// renderHtml renders the Page.Body to HTML and sets Page.Html, Page.Language, Page.Hashtags, and escapes Page.Name.
-// Note: If the rendered HTML doesn't contain the attributes or elements you expect it to contain, check sanitizeBytes!
-func (p *Page) renderHtml() {
+// renderHTML renders the Page.Body to HTML and sets Page.HTML, Page.Hashtags, and escapes Page.Name.
+func (p *Page) renderHTML() {
 	parser, hashtags := wikiParser()
 	renderer := wikiRenderer()
 	maybeUnsafeHTML := markdown.ToHTML(p.Body, parser, renderer)
-	p.Name = nameEscape(p.Name)
-	p.Html = unsafeBytes(maybeUnsafeHTML)
+	p.HTML = unsafeBytes(maybeUnsafeHTML)
 	p.Hashtags = *hashtags
 }
 
@@ -119,3 +125,50 @@ func (p *Page) plainText() string {
 	}
 	return string(text)
 }
+
+// images returns an array of ImageData.
+func (p *Page) images() []ImageData {
+	dir := p.Dir()
+	images := make([]ImageData, 0)
+	parser := parser.New()
+	doc := markdown.Parse(p.Body, parser)
+	ast.WalkFunc(doc, func(node ast.Node, entering bool) ast.WalkStatus {
+		if entering {
+			if v, ok := node.(*ast.Image); ok {
+				// not an absolute URL, not a full URL, not a mailto: URI
+				text := toString(v)
+				if len(text) > 0 {
+					name := path.Join(dir, string(v.Destination))
+					image := ImageData{Title: text, Name: name}
+					images = append(images, image)
+				}
+				return ast.SkipChildren
+			}
+		}
+		return ast.GoToNext
+	})
+	return images
+}
+
+// hashtags returns an array of hashtags
+func hashtags(s []byte) []string {
+	parser, hashtags := wikiParser()
+	markdown.Parse(s, parser)
+	return *hashtags
+}
+
+// toString for a node returns the text nodes' literals, concatenated. There is no whitespace added so the expectation
+// is that there is only one child node. Otherwise, there may be a space missing between the literals, depending on the
+// exact child nodes they belong to.
+func toString(node ast.Node) string {
+	b := new(bytes.Buffer)
+	ast.WalkFunc(node, func(node ast.Node, entering bool) ast.WalkStatus {
+		if entering {
+			if v, ok := node.(*ast.Text); ok {
+				b.Write(v.Literal)
+			}
+		}
+		return ast.GoToNext
+	})
+	return b.String()
+}

parser_test.go

@@ -1,8 +1,9 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestPagePlainText(t *testing.T) {
@@ -19,14 +20,14 @@ func TestPageHtml(t *testing.T) {
 Silver leaves shine bright
 They droop, boneless, weak and sad
 A cruel sun stares down`)}
-	p.renderHtml()
+	p.renderHTML()
 	r := `<h1 id="sun">Sun</h1>
 
 <p>Silver leaves shine bright
 They droop, boneless, weak and sad
 A cruel sun stares down</p>
 `
-	assert.Equal(t, r, string(p.Html))
+	assert.Equal(t, r, string(p.HTML))
 }
 
 func TestPageHtmlHashtag(t *testing.T) {
@@ -36,7 +37,7 @@ Too faint to focus, so far
 I am cold, alone
 
 #Haiku #Cold_Poets`)}
-	p.renderHtml()
+	p.renderHTML()
 	r := `<h1 id="comet">Comet</h1>
 
 <p>Stars flicker above
@@ -45,7 +46,21 @@ I am cold, alone</p>
 
 <p><a class="tag" href="/search/?q=%23Haiku">#Haiku</a> <a class="tag" href="/search/?q=%23Cold_Poets">#Cold Poets</a></p>
 `
-	assert.Equal(t, r, string(p.Html))
+	assert.Equal(t, r, string(p.HTML))
+}
+
+func TestPageHtmlHashtagCornerCases(t *testing.T) {
+	p := &Page{Body: []byte(`#
+
+ok # #o #ok
+[oh #ok \#nok](ok)`)}
+	p.renderHTML()
+	r := `<p>#</p>
+
+<p>ok # <a class="tag" href="/search/?q=%23o">#o</a> <a class="tag" href="/search/?q=%23ok">#ok</a>
+<a href="ok">oh #ok #nok</a></p>
+`
+	assert.Equal(t, r, string(p.HTML))
 }
 
 func TestPageHtmlWikiLink(t *testing.T) {
@@ -53,14 +68,14 @@ func TestPageHtmlWikiLink(t *testing.T) {
 Blue and green and black
 Sky and grass and [ragged cliffs](cliffs)
 Our [[time together]]`)}
-	p.renderHtml()
+	p.renderHTML()
 	r := `<h1 id="photos-and-books">Photos and Books</h1>
 
 <p>Blue and green and black
 Sky and grass and <a href="cliffs">ragged cliffs</a>
 Our <a href="time%20together">time together</a></p>
 `
-	assert.Equal(t, r, string(p.Html))
+	assert.Equal(t, r, string(p.HTML))
 }
 
 func TestPageHtmlDollar(t *testing.T) {
@@ -68,18 +83,55 @@ func TestPageHtmlDollar(t *testing.T) {
 Dragonfly hovers
 darts chases turns lands and rests
 A mighty jewel`)}
-	p.renderHtml()
+	p.renderHTML()
 	r := `<h1 id="no-dollar-can-buy-this">No $dollar$ can buy this</h1>
 
 <p>Dragonfly hovers
 darts chases turns lands and rests
 A mighty jewel</p>
 `
-	assert.Equal(t, r, string(p.Html))
+	assert.Equal(t, r, string(p.HTML))
 }
 
 func TestLazyLoadImages(t *testing.T) {
 	p := &Page{Body: []byte(`![](test.jpg)`)}
-	p.renderHtml()
-	assert.Contains(t, string(p.Html), "lazy")
+	p.renderHTML()
+	assert.Contains(t, string(p.HTML), "lazy")
+}
+
+// The fractions available in Latin 1 (?) are rendered.
+func TestFractions(t *testing.T) {
+	p := &Page{Body: []byte(`1/4`)}
+	p.renderHTML()
+	assert.Contains(t, string(p.HTML), "&frac14;")
+}
+
+// Other fractions are not rendered.
+func TestNoFractions(t *testing.T) {
+	p := &Page{Body: []byte(`1/6`)}
+	p.renderHTML()
+	assert.Contains(t, string(p.HTML), "1/6")
+}
+
+// webfinger
+func TestAt(t *testing.T) {
+	// enable webfinger
+	useWebfinger = true
+	// prevent lookups
+	accounts.Lock()
+	accounts.uris = make(map[string]string)
+	accounts.uris["alex@alexschroeder.ch"] = "https://social.alexschroeder.ch/@alex"
+	accounts.Unlock()
+	// test account
+	p := &Page{Body: []byte(`My fedi handle is @alex@alexschroeder.ch.`)}
+	p.renderHTML()
+	assert.Contains(t, string(p.HTML),
+		`My fedi handle is <a class="account" href="https://social.alexschroeder.ch/@alex" title="@alex@alexschroeder.ch">@alex</a>.`)
+	// test escaped account
+	p = &Page{Body: []byte(`My fedi handle is \@alex@alexschroeder.ch. \`)}
+	p.renderHTML()
+	assert.Contains(t, string(p.HTML),
+		`My fedi handle is @alex@alexschroeder.ch.`)
+	// disable webfinger
+	useWebfinger = false
 }