Add some docs for linter, comment, status

runtime/plugins/status/help/status.md

@@ -0,0 +1,15 @@
+# Status
+
+The status plugin provides some functions for modifying the status line.
+
+Using the `statusformatl` and `statusformatr` options, the exact contents
+of the status line can be modified. Please see the documentation for
+those options (`> help options`) for more information.
+
+This plugin provides the three functions that can be used in the status
+line format:
+
+* `status.branch`: returns the name of the current git branch.
+* `status.hash`: returns the hash of the current git commit.
+* `status.paste`: returns "" if the paste option is disabled and "PASTE"
+   if it is enabled.

runtime/plugins/status/status.lua

@@ -8,6 +8,7 @@ function init()
     micro.SetStatusInfoFn("status.branch")
     micro.SetStatusInfoFn("status.hash")
     micro.SetStatusInfoFn("status.paste")
+    config.AddRuntimeFile("status", config.RTHelp, "help/status.md")
 end
 
 function branch(b)
@@ -19,6 +20,7 @@ function branch(b)
         if err == nil then
             return strings.TrimSpace(branch)
         end
+        return ""
     end
 end
 
@@ -31,6 +33,7 @@ function hash(b)
         if err == nil then
             return strings.TrimSpace(hash)
         end
+        return ""
     end
 end