More command binding

Now can bind editable commands with `command-edit:`

Ref #974

cmd/micro/bindings.go

@@ -479,6 +479,9 @@ func BindKey(k, v string) {
 		} else if strings.HasPrefix(actionName, "command:") {
 			cmd := strings.SplitN(actionName, ":", 2)[1]
 			actions = append(actions, CommandAction(cmd))
+		} else if strings.HasPrefix(actionName, "command-edit:") {
+			cmd := strings.SplitN(actionName, ":", 2)[1]
+			actions = append(actions, CommandEditAction(cmd))
 		} else {
 			actions = append(actions, findAction(actionName))
 		}

cmd/micro/command.go

@@ -120,6 +120,16 @@ func DefaultCommands() map[string]StrCommand {
 	}
 }
 
+func CommandEditAction(prompt string) func(*View, bool) bool {
+	return func(v *View, usePlugin bool) bool {
+		input, canceled := messenger.Prompt("> ", prompt, "Command", CommandCompletion)
+		if !canceled {
+			HandleCommand(input)
+		}
+		return false
+	}
+}
+
 func CommandAction(cmd string) func(*View, bool) bool {
 	return func(v *View, usePlugin bool) bool {
 		HandleCommand(cmd)