Re: Changes for emacs 28

[Eli Zaretskii]

> From: Caio Henrique <caiohcs0@gmail.com>
> Cc: Ergus <spacibba@aol.com>,  caiohcs0@gmail.com,  emacs-devel@gnu.org
> Date: Fri, 11 Sep 2020 11:02:54 -0300
> 
> >> Maybe it is a redisplay problem?
> >
> > No, because the Cut and Paste button have no such problems.
> 
> I tried that code again and I experienced the same thing as Ergus, but
> only in some cases. If I:
> 1. launch emacs -Q
> 2. type only the letter "a"
> 3. click on the "Undo" button on the toolbar
> 
> Then the "Redo" button on the toolbar activates and all works well.
> 
> But if I try:
> 1. launch emacs -Q
> 2. type the letter "a"
> 3. press RET to insert newline
> 4. type the letter "b"
> 5. click on the "Undo" button on the toolbar
> 
> In this case the "Redo" toolbar button doesn't activate (but the "Redo"
> button on the menu bar works fine). Then if I click with the mouse
> anywhere inside the buffer, then the toolbar menu activates.
> I don't know what the problem is, any ideas?

Did you look at how Cut/Paste solve the same problem?

> > Thanks, but please add a help-echo text for that button.  The menu
> > item perhaps could do without it, but not the tool-bar button.
> 
> Isn't the help-echo text the one that appears when I place my mouse over
> the toolbar button? Isn't this text the same one used for the menu bar
> buttons? When I place my mouse over "Redo" on the toolbar, it says "Undo
> last undo".

Hmm, when I tried that, I didn't see any help-echo for the Redo menu
item.  I do see it now, so I guess I did something wrong when I tried
that back then.  Sorry about that.