Bug#964846: reportbug-gtk: mua xdg-email: does not work with the GTK UI
At this point I think we need help from someone more familiar with VTE.
Simon, do you know this stuff or do you know someone who we could ask?
On Sat, 11 Jul 2020 09:44:27 +0800 Paul Wise <pabs@debian.org> wrote:
> Package: reportbug-gtk
> Version: 7.7.0
> Severity: important
>
> When I try to use the xdg-email MUA with the reportbug GTK UI, at the
> end there is a brief flash of a black screen but no MUA composer window
> pops up. My default MUA on this GNOME desktop is evolution.
On 11.07.2020 11.34, Paul Wise wrote:
> On Sat, 2020-07-11 at 09:54 +0200, Nis Martensen wrote:
>
>> Could you please test this with xdg-email and mailto URIs on the command
>> line to narrow down the problem and file a bug with your desktop
>> environment's mailto handling tool?
>
> xdg-email works fine and xdg-open mailto: also, both in a terminal and
> from the non-terminal-based GNOME command running dialog (Alt+F2).
>
> They also work with the reportbug text/urwid UIs, the issue only occurs
> with the reportbug GTK UI for some reason.
>
> If I add some debugging to the SystemPage execute function from the
> gtk_ui.py file to print the xdg-email command that is run under a VTE
> terminal. I then copied the command into a GNOME Terminal and it ran
> there just fine. I then commented out the self.terminal.spawn_sync call
> and the black screen in the reportbug UI stayed around instead of
> closing immediately. Then I tested subprocess.run() instead of Vte
> spawn_sync and it worked. Then I tested the mutt reportbug option and
> it worked fine. Then I tested setting the reportbug mua option to the
> evolution MUA (which xdg-email opens normally) and it worked fine. Then
> I hacked the code to append "; sleep inf" to the command being run and
> xdg-email worked fine. Then I tried "; sleep 0.1s" and it did not work.
> 0.5s does not work but 0.9s does work. So I think there is some sort of
> race condition within VTE or something.
>
> BTW, I think the GTK UI should not be running the MUAs under a VTE
> terminal unless the MUA is marked as needing a terminal. Same for any
> other commands it runs under a VTE terminal. For xdg-email probably
> most of the commands that runs don't need a terminal.
>
> BTW, I think that reportbug shouldn't be running commands via the shell
> and definitely shouldn't be using bash even if shell really is needed.
>
> BTW, while debugging I saw this deprecation warning:
>
> <stdin>:1: DeprecationWarning: Vte.Terminal.spawn_sync is deprecated
> https://developer.gnome.org/vte/unstable/VteTerminal.html#vte-terminal-spawn-sync
>
Great debugging work. Thanks Paul!
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