Bug#881099: libatk-adaptor: breaks LibreOffice TexMaths extension

Wed Nov 8 13:01:48 UTC 2017

Thank Paul for forwarding us this issue.

I'm not sure it is due to libatk-adaptor itself. As I understand of the 
a11y stack on GNU/Linux, libatk-adaptor is the bridge between GTK 
applications and AT-SPI2. If libatk-adaptor is not installed, 
LibreOffice should provide no feedback to assistive technologies. So it 
seems it is an issue from LibreOffice itself.

Best regards.
-- 
Alex ARNAUD
Visual-Impairment Project Manager
Hypra - "Humanizing technology"

Le 07/11/2017 à 20:28, Paul Gevers a écrit :
> Package: libatk-adaptor
> Version: 2.22.0-2
> Severity: normal
> 
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> This bug is a forward of Ubuntu bug 1641284¹, that was reported to also exist
> in Debian Strech. I have not verified myself, but the report seemed carefully
> written.
> 
> =====
> 
> If the package libatk-adaptor is installed on Ubuntu (as a depency of
> gnome-orca for example), it breaks down the LibreOffice TexMaths
> extension. TexMaths is a popular extension used to enter / edit LaTeX equations
> on LibreOffice (see http://roland65.free.fr/texmaths).
> 
> Step to reproduce the bug:
> 
> 1. It is assumed that LibreOffice 5.1.4 (with at least the Writer and Draw
> components) is installed on Ubuntu. It is also assumed that libatk-adaptor is
> installed.
> 
> 2. Install texlive:
> sudo apt-get install texlive
> 
> 3. Download and install the TexMaths extension (version 0.42) from there:
> https://sourceforge.net/projects/texmaths/files/0.42/
> 
> 4. Create a new empty Writer document, then click on the Pi icon (this is the
> TexMaths icon) and in the window that opens, type: 'x(t)+y(t)' (without the
> quotes), then click on the LaTeX button. This generates an SVG image of the
> 'x(t)+y(t)' equation.
> 
> 5. Select the SVG image of the equation by left clicking on it. Then click on
> the Pi icon. Now, instead of editing the equation, an error message is
> displayed: "The selected object is not a TexMaths equation... Please unselect
> it and call the macro again...".
> 
> 6. Now, right click on the SVG image and select the 'Description' menu
> voice. In the window that opens, the description is empty and does not contain
> the equation text, as it should.
> 
> 7. Now purge (and not just remove) the libatk-adaptor package:
> sudo apt-get purge libatk-adaptor
> then logout and login and repeat the steps 4, 5, and 6: everything is OK and
> the equation can be edited as usual.
> 
> Another way to remove the bug instead of purging libatk-adaptor is to rename
> the file: /etc/X11/Xsession.d/90atk-adaptor to
> /etc/X11/Xsession.d/90atk-adaptor.orig . Then logout and login.
> 
> - ---
> 
> I forgot to mention that I am the author of the TexMaths extension. Of course,
> during my testing there was no other extension installed. The bug occurs in
> 5.1.x and 5.2.x versions of LibreOffice. I used a fresh Ubuntu 16.04.1 install
> for the test, but the bug appears in various Ubuntu flavours too, as many
> TexMaths users reported.
> 
> You should also consider the other bug I reported
> (https://bugs.launchpad.net/ubuntu/+source/at-spi2-atk/+bug/1584795), which
> relates LibreOffice and liabatk-adaptor.
> 
> These two bugs are 100% reproducibles.
> 
> - ---
> 
> Bug confirmed on Debian 9 (stretch), too.
> 
> Here, libatk-adaptor is installed by default as a dependency of orca und
> task-xfce-desktop.  So i cannot purge it without breaking my system.
> 
> After disabling atk-adaptor
>    mv /etc/X11/Xsession.d/90atk-adaptor /etc/X11/Xsession.d/90atk-adaptor.bak
> as suggested by Roland65 here
>    https://sourceforge.net/p/texmaths/bugs/69/#822d
> my TexMaths-Plugin works fine.
> 
> ¹ https://bugs.launchpad.net/ubuntu/+bug/1641284
> 
> - -- System Information:
> Debian Release: buster/sid
>    APT prefers testing-debug
>    APT policy: (500, 'testing-debug'), (500, 'testing'), (200, 'testing'), (50, 'testing')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 4.13.0-1-amd64 (SMP w/2 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> 
> Versions of packages libatk-adaptor depends on:
> ii  libatk-bridge2.0-0  2.26.0-1
> ii  libatk1.0-0         2.26.0-2
> ii  libatspi2.0-0       2.26.0-2
> ii  libc6               2.24-17
> ii  libdbus-1-3         1.11.22-1
> ii  libglib2.0-0        2.54.1-1
> 
> libatk-adaptor recommends no packages.
> 
> libatk-adaptor suggests no packages.
> 
> - -- no debconf information
> 
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