Re: [PATCHv3 1/2] Initial TUI mouse support

[Joel Brobecker <brobecker@adacore.com>]

Hi Pedro and Hannes,

Thanks Pedro for having reported this regression. I agree we can't
branch with this sort of issue!

On Fri, Jun 04, 2021 at 04:48:14PM +0000, Hannes Domani wrote:
>  Am Freitag, 4. Juni 2021, 18:29:52 MESZ hat Pedro Alves <pedro@palves.net> Folgendes geschrieben:
> 
> > On 2021-06-04 4:20 p.m., Pedro Alves wrote:
> > > On 2021-06-04 3:21 p.m., Hannes Domani via Gdb-patches wrote:
> > >>  Am Freitag, 4. Juni 2021, 15:51:27 MESZ hat Tom Tromey <tom@tromey.com> Folgendes geschrieben:
> > >>
> > >>>>>>>> "Hannes" == Hannes Domani via Gdb-patches <gdb-patches@sourceware.org> writes:
> > >>>
> > >>> Hannes> Implements an overridable tui_win_info::click method whose arguments
> > >>> Hannes> are the mouse coordinates inside the specific window, and the mouse
> > >>> Hannes> button clicked.
> > >>>
> > >>> Hannes> And if the curses implementation supports 5 buttons, the 4th and 5th
> > >>> Hannes> buttons are used for scrolling.
> > >>>
> > >>> Hannes> 2021-06-03  Hannes Domani  <ssbssa@yahoo.de>
> > >>>
> > >>> Hannes>     * ser-mingw.c (console_select_thread): Handle MOUSE_EVENT.
> > >>> Hannes>     * tui/tui-data.h (struct tui_win_info): Add click function.
> > >>> Hannes>     * tui/tui-io.c (tui_prep_terminal): Enable mouse events.
> > >>> Hannes>     (tui_deprep_terminal): Disable mouse events.
> > >>> Hannes>     (tui_dispatch_ctrl_char): Handle KEY_MOUSE.
> > >>> Hannes>     * tui/tui.c (tui_disable): Disable mouse events.
> > >>>
> > >>> Looks good.  Thank you again.
> > >>
> > >> Pushed both, thanks.
> > >>
> > >
> > > Yay, mouse support finally.  Thank you!
> >
> > Unfortunately, now that I try it, it's broken for me.  And it's broken in a very bad way -- I think
> > this should block the release or be disabled until we figure out what's wrong.  It definitely
> > makes GDB unusable for me.
> >
> > The trouble is that now pressing anywhere on the screen with the mouse just results in
> > weird characters being printed on the command line window (probably uninterpreted control
> > sequences).  That even prevents me from selecting text (something I do often) -- I wanted to do
> > that to paste the results here.  I even tried suspending GDB with ^Z to then copy the text, but
> > that still leaves the mouse messed up.  See this screenshot:
> >
> >   https://i.imgur.com/bO7FKDO.png
> >
> > This was on Ubuntu 20.04.
> 
> OK, that's bad.
> What's the procedure for this sort or problem? Reverting?
> 
> I didn't expect this kind of problem, it works fine for me on a remote Linux
> via putty.

If you can reproduce, understand, and fix quickly, we can go with that.
Otherwise, for an issue with this kind of effect, we indeed usually start
by reverting, or at least disabling the code entirely when that's easily
done.

-- 
Joel