Add bind and unbind commands

cmd/micro/action/actions.go

@@ -558,6 +558,9 @@ func (h *BufHandler) InsertTab() bool {
 
 // SaveAll saves all open buffers
 func (h *BufHandler) SaveAll() bool {
+	for _, b := range buffer.OpenBuffers {
+		b.Save()
+	}
 	return false
 }
 
@@ -672,7 +675,6 @@ func (h *BufHandler) Undo() bool {
 
 // Redo redoes the last action
 func (h *BufHandler) Redo() bool {
-	// TODO: clear cursors and message
 	h.Buf.Redo()
 	InfoBar.Message("Redid action")
 	return true

cmd/micro/action/bindings.go

@@ -201,6 +201,50 @@ func TryBindKey(k, v string, overwrite bool) (bool, error) {
 	return false, e
 }
 
+// UnbindKey removes the binding for a key from the bindings.json file
+func UnbindKey(k string) error {
+	var e error
+	var parsed map[string]string
+
+	filename := config.ConfigDir + "/bindings.json"
+	if _, e = os.Stat(filename); e == nil {
+		input, err := ioutil.ReadFile(filename)
+		if err != nil {
+			return errors.New("Error reading bindings.json file: " + err.Error())
+		}
+
+		err = json5.Unmarshal(input, &parsed)
+		if err != nil {
+			return errors.New("Error reading bindings.json: " + err.Error())
+		}
+
+		key, ok := findEvent(k)
+		if !ok {
+			return errors.New("Invalid event " + k)
+		}
+
+		for ev := range parsed {
+			if e, ok := findEvent(ev); ok {
+				if e == key {
+					delete(parsed, ev)
+					break
+				}
+			}
+		}
+
+		defaults := DefaultBindings()
+		if a, ok := defaults[k]; ok {
+			BindKey(k, a)
+		} else if _, ok := config.Bindings[k]; ok {
+			delete(config.Bindings, k)
+		}
+
+		txt, _ := json.MarshalIndent(parsed, "", "    ")
+		return ioutil.WriteFile(filename, append(txt, '\n'), 0644)
+	}
+	return e
+}
+
 var mouseEvents = map[string]tcell.ButtonMask{
 	"MouseLeft":       tcell.Button1,
 	"MouseMiddle":     tcell.Button2,

cmd/micro/action/command.go

@@ -35,6 +35,7 @@ var commandActions = map[string]func(*BufHandler, []string){
 	"ShowKey":    (*BufHandler).ShowKeyCmd,
 	"Run":        (*BufHandler).RunCmd,
 	"Bind":       (*BufHandler).BindCmd,
+	"Unbind":     (*BufHandler).UnbindCmd,
 	"Quit":       (*BufHandler).QuitCmd,
 	"Save":       (*BufHandler).SaveCmd,
 	"Replace":    (*BufHandler).ReplaceCmd,
@@ -92,6 +93,7 @@ func DefaultCommands() map[string]StrCommand {
 		"show":       {"Show", []Completion{OptionCompletion, NoCompletion}},
 		"showkey":    {"ShowKey", []Completion{NoCompletion}},
 		"bind":       {"Bind", []Completion{NoCompletion}},
+		"unbind":     {"Unbind", []Completion{NoCompletion}},
 		"run":        {"Run", []Completion{NoCompletion}},
 		"quit":       {"Quit", []Completion{NoCompletion}},
 		"save":       {"Save", []Completion{NoCompletion}},
@@ -458,6 +460,28 @@ func (h *BufHandler) ShowKeyCmd(args []string) {
 
 // BindCmd creates a new keybinding
 func (h *BufHandler) BindCmd(args []string) {
+	if len(args) < 2 {
+		InfoBar.Error("Not enough arguments")
+		return
+	}
+
+	_, err := TryBindKey(args[0], args[1], true)
+	if err != nil {
+		InfoBar.Error(err)
+	}
+}
+
+// UnbindCmd binds a key to its default action
+func (h *BufHandler) UnbindCmd(args []string) {
+	if len(args) < 1 {
+		InfoBar.Error("Not enough arguements")
+		return
+	}
+
+	err := UnbindKey(args[0])
+	if err != nil {
+		InfoBar.Error(err)
+	}
 }
 
 // RunCmd runs a shell command in the background