GNU bug report logs - #53234
terminal URL capability not correctly detected (gnome-terminal 3.22.2).

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Package: guix;

Reported by: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>

Date: Thu, 13 Jan 2022 18:50:02 UTC

Severity: normal

Done: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #13 received at 53234-done <at> debbugs.gnu.org (full text, mbox):

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 53234-done <at> debbugs.gnu.org
Subject: Re: bug#53234: terminal URL capability not correctly detected
 (gnome-terminal 3.22.2).
Date: Fri, 14 Jan 2022 23:54:28 -0500

Hello!

Ludovic Courtès <ludo <at> gnu.org> writes:

> Hi,
>
> Maxim Cournoyer <maxim.cournoyer <at> gmail.com> skribis:
>
>> I discovered that on a Debian 9 (stretch) box equipped with
>> gnome-terminal 3.22.2, Guix would use terminal ANSI codes to represent
>> hyperlinks in its output, which were not supported by GNOME terminal
>> 3.22.2 which uses VTE 0.46.1 (it picked up support in 3.26 IIRC).
>
> I’m afraid there’s not much we can do: terminal emulators are supposed
> to ignore ANSI sequences they don’t understand.

Ah, thanks for pointing that to me.  I had guessed we had to do some
work to detect the terminal capability and conditionally output escapes
or not, but I'm glad that's not how it works :-).

> My recollection is that there was a bug in libvte back then:
>
>   https://issues.guix.gnu.org/38940#6-lineno18
>
> That bug mentions a much older VTE though, so I wonder if it’s a newer
> regression?

According to [0]:

> At this moment, terminals known to be buggy (OSC 8 resulting in
> display corruption) are VTE versions up to 0.46.2 and 0.48.1, Windows
> Terminal up to 0.9, Emacs's built-in terminal, and screen with 700+
> character long URLs.

Which gnome-terminal shipped with Debian 9 uses.  Luckily, this release
will be EOL in a few months (June 2022) [1], so the problem will
disappear soon.

I'm closing this report, thank you for the explanations!

Maxim

[0]  https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
[1]  https://www.debian.org/releases/stretch/
This bug report was last modified 3 years and 180 days ago.

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