Map ctrl+c to abort the current line

tools/tui/readline/actions.go

@@ -584,12 +584,12 @@ func (self *Readline) perform_action(ac Action, repeat_count uint) error {
 			return nil
 		}
 	case ActionHistoryPreviousOrCursorUp:
-		if self.perform_action(ActionCursorUp, repeat_count) != nil {
+		if self.perform_action(ActionCursorUp, repeat_count) == ErrCouldNotPerformAction {
 			return self.perform_action(ActionHistoryPrevious, repeat_count)
 		}
 		return nil
 	case ActionHistoryNextOrCursorDown:
-		if self.perform_action(ActionCursorDown, repeat_count) != nil {
+		if self.perform_action(ActionCursorDown, repeat_count) == ErrCouldNotPerformAction {
 			return self.perform_action(ActionHistoryNext, repeat_count)
 		}
 		return nil
@@ -643,6 +643,10 @@ func (self *Readline) perform_action(ac Action, repeat_count uint) error {
 		if self.yank(repeat_count, true) {
 			return nil
 		}
+	case ActionAbortCurrentLine:
+		self.loop.QueueWriteString("\r\n")
+		self.ResetText()
+		return nil
 	}
 	return ErrCouldNotPerformAction
 }

tools/tui/readline/api.go

@@ -60,6 +60,7 @@ const (
 	ActionHistoryLast
 	ActionClearScreen
 	ActionAddText
+	ActionAbortCurrentLine
 
 	ActionStartKillActions
 	ActionKillToEndOfLine

tools/tui/readline/keys.go

@@ -49,10 +49,14 @@ var default_shortcuts = map[string]Action{
 	"ctrl+y":        ActionYank,
 	"alt+y":         ActionPopYank,
 
+	"up":     ActionHistoryPreviousOrCursorUp,
+	"down":   ActionHistoryNextOrCursorDown,
 	"ctrl+p": ActionHistoryPrevious,
 	"ctrl+n": ActionHistoryNext,
 	"alt+<":  ActionHistoryFirst,
 	"alt+>":  ActionHistoryLast,
+
+	"ctrl+c": ActionAbortCurrentLine,
 }
 
 func action_for_key_event(event *loop.KeyEvent, shortcuts map[string]Action) Action {