Add 'bell' action to ring the terminal bell

src/options.go

@@ -1586,6 +1586,8 @@ func parseActionList(masked string, original string, prevActions []*action, putA
 			} else {
 				return nil, errors.New("unable to put non-printable character")
 			}
+		case "bell":
+			appendAction(actBell)
 		default:
 			t := isExecuteAction(specLower)
 			if t == actIgnore {

src/terminal.go

@@ -567,6 +567,7 @@ const (
 	actBecome
 	actShowHeader
 	actHideHeader
+	actBell
 )
 
 func (a actionType) Name() string {
@@ -4704,6 +4705,8 @@ func (t *Terminal) Loop() error {
 						t.executor.Become(t.ttyin, t.environ(), command)
 					}
 				}
+			case actBell:
+				t.tui.Bell()
 			case actExecute, actExecuteSilent:
 				t.executeCommand(a.a, false, a.t == actExecuteSilent, false, false, "")
 			case actExecuteMulti:

src/tui/dummy.go

@@ -44,6 +44,7 @@ func (r *FullscreenRenderer) PassThrough(string)                 {}
 func (r *FullscreenRenderer) Clear()                             {}
 func (r *FullscreenRenderer) NeedScrollbarRedraw() bool          { return false }
 func (r *FullscreenRenderer) ShouldEmitResizeEvent() bool        { return false }
+func (r *FullscreenRenderer) Bell()                              {}
 func (r *FullscreenRenderer) Refresh()                           {}
 func (r *FullscreenRenderer) Close()                             {}
 func (r *FullscreenRenderer) Size() TermSize                     { return TermSize{} }

src/tui/light.go

@@ -32,6 +32,10 @@ const consoleDevice string = "/dev/tty"
 var offsetRegexp = regexp.MustCompile("(.*)\x1b\\[([0-9]+);([0-9]+)R")
 var offsetRegexpBegin = regexp.MustCompile("^\x1b\\[[0-9]+;[0-9]+R")
 
+func (r *LightRenderer) Bell() {
+	r.flushRaw("\a")
+}
+
 func (r *LightRenderer) PassThrough(str string) {
 	r.queued.WriteString("\x1b7" + str + "\x1b8")
 }

src/tui/tcell.go

@@ -100,6 +100,10 @@ const (
 	BoldForce     = Attr(1 << 10)
 )
 
+func (r *FullscreenRenderer) Bell() {
+	_screen.Beep()
+}
+
 func (r *FullscreenRenderer) PassThrough(str string) {
 	// No-op
 	// https://github.com/gdamore/tcell/pull/650#issuecomment-1806442846

src/tui/tui.go

@@ -580,6 +580,7 @@ type Renderer interface {
 	PassThrough(string)
 	NeedScrollbarRedraw() bool
 	ShouldEmitResizeEvent() bool
+	Bell()
 
 	GetChar() Event