Bug#1089108: /usr/bin/gnome-terminal: wrongly displays unicode sequences involving combining characters

[Uwe Kleine-König]

Hello,

On Thu, Dec 05, 2024 at 07:41:49PM +0100, Uwe Kleine-König wrote:
> On 12/5/24 19:28, Simon McVittie wrote:
> > Control: tags -1 + moreinfo
> > 
> > On Thu, 05 Dec 2024 at 19:05:16 +0100, Uwe Kleine-König wrote:
> > > The (e.g.) combining Acute Accent (codepoint 0x301, utf-8 representation
> > > "\xcc\x81") is supposed to put an accent on the char just before it.
> > > 
> > > That is
> > > 
> > > 	echo -e "e\xcc\x81e" | iconv -f utf-8
> > > 
> > > is supposed to show two e with the first having an accent.
> > 
> > This works as you say it should for me, in gnome-terminal and kgx
> > (gnome-console).
> 
> kgx gets it right for me, too.
> 
> > What byte sequence is output from iconv on your system?
> > (echo -e "e\xcc\x81e" | iconv -f utf-8 | xxd)
> > 
> > I expect that the answer should be:
> > 
> > 00000000: 65cc 8165 0a                             e..e.
> 
> Indeed. I only added the iconv in case someone wants to reproduce with a
> non-utf-8 encoding.
> 
> > which is U+0065 'e', U+0301 combining acute accent, U+0065 'e', newline.
> > 
> > > ii  libpango-1.0-0                                1.54.0+ds-3
> > 
> > I have version 1.55.0+ds-3, if that matters.
> > 
> > > ii  libvte-2.91-0                                 0.78.1-1
> > 
> > I have version 0.78.2-1, if that matters.
> 
> I updated these two to the version you have (i.e. current unstable) and the
> problem persists in gnome-terminal (even after a reboot).
> Then maybe a transitive dependency is the culprit???

I upgraded my system to full unstable and the problem persists after a
reboot :-\

Then I created a new user and tried with that => problem fixed.

Then I created (with my normal user) a new Profile for Gnome Terminal =>
problem fixed.

Then in the old profile switched from the Custom font "Inconsolata"
(provided by package fonts-inconsolata) to Monospace => problem fixed.

The latter even works "live", that is, if I have the Terminal show the
bogus sequence and switch the font, the display is fixed. Same in the
other direction.

Fun-fact: When I switch the font in kgx to Inconsolata, it shows two e
without accent.

Best regards
Uwe
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
URL: <http://alioth-lists.debian.net/pipermail/pkg-gnome-maintainers/attachments/20241211/71fcde43/attachment.sig>