bug#50067: Context menus

[Juri Linkov]

>> diff --git a/lisp/mouse.el b/lisp/mouse.el
>> index 9b7d4c240f..5193994231 100644
>> --- a/lisp/mouse.el
>> +++ b/lisp/mouse.el
>> @@ -304,7 +304,7 @@ context-menu-filter-function
>>  (defun context-menu-map ()
>>    "Return composite menu map."
>> -  (let ((menu (make-sparse-keymap "Context Menu")))
>> +  (let ((menu (make-sparse-keymap)))
>>      (run-hook-wrapped 'context-menu-functions
>>                        (lambda (fun)
>>                          (setq menu (funcall fun menu))
>
> I see you already pushed this, but it's a bad idea: it makes ugly
> context menus on TTYs (and AFAIU also on non-toolkit X builds): these
> _require_ the menu name because they display a caption which looks bad
> with an empty name.

I guess the presence of the title should be platform-dependent.
For example, without a title it looks great on the GTK build.