Support binding raw escapes codes

cmd/micro/bindings.go

@@ -260,6 +260,7 @@ type Key struct {
 	modifiers tcell.ModMask
 	buttons   tcell.ButtonMask
 	r         rune
+	escape    string
 }
 
 // InitBindings initializes the keybindings for micro
@@ -316,6 +317,14 @@ modSearch:
 		case strings.HasPrefix(k, "Shift"):
 			k = k[5:]
 			modifiers |= tcell.ModShift
+		case strings.HasPrefix(k, "\x1b"):
+			return Key{
+				keyCode:   -1,
+				modifiers: modifiers,
+				buttons:   -1,
+				r:         0,
+				escape:    k,
+			}, true
 		default:
 			break modSearch
 		}

cmd/micro/view.go

@@ -497,6 +497,24 @@ func (v *View) HandleEvent(event tcell.Event) {
 	v.Buf.CheckModTime()
 
 	switch e := event.(type) {
+	case *tcell.EventRaw:
+		for key, actions := range bindings {
+			if key.keyCode == -1 {
+				if e.EscapeCode() == key.escape {
+					for _, c := range v.Buf.cursors {
+						ok := v.SetCursor(c)
+						if !ok {
+							break
+						}
+						relocate = false
+						relocate = v.ExecuteActions(actions) || relocate
+					}
+					v.SetCursor(&v.Buf.Cursor)
+					v.Buf.MergeCursors()
+					break
+				}
+			}
+		}
 	case *tcell.EventKey:
 		// Check first if input is a key binding, if it is we 'eat' the input and don't insert a rune
 		isBinding := false