Bug#777378: gnome-orca: braille output broken when using lightm to log in when xbrlapi bug #777377 is fixed

[Samuel Thibault]

Package: gnome-orca
Version: 3.14.0-2
Severity: important

Hello,

When bug #777377 of xbrlapi is fixed, the gnome-orca output will be
broken, because gnome-orca has the same issue as xbrlapi: lightdm only
defines XDG_VTNR to the VT number (for instance 7), not WINDOWPATH, and
gnome-orca only knows about the latter, and thus confusingly attaches
itself to the X window 7 of the VT 7, and thus its output gets lost.
The attached patch makes orca aware of XDG_VTNR too, thus fixing the
issue. This change does not hurt even when xbrlapi is not fixed, so
orca can be uploaded first, and the fixed xbrlapi uploaded after that,
Breaks-ing the previous version of orca.

Samuel

-- System Information:
Debian Release: 8.0
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'buildd-unstable'), (500, 'unstable'), (500, 'stable'), (500, 'oldstable'), (1, 'buildd-experimental'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.18.0 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)

Versions of packages gnome-orca depends on:
ii  gir1.2-glib-2.0            1.42.0-2.2
ii  gir1.2-gtk-3.0             3.14.5-1
ii  gir1.2-pango-1.0           1.36.8-3
ii  gir1.2-wnck-3.0            3.4.9-3
ii  gsettings-desktop-schemas  3.14.1-1
ii  python3                    3.4.2-2
ii  python3-brlapi             5.2~20141018-2
ii  python3-cairo              1.10.0+dfsg-4+b1
ii  python3-gi                 3.14.0-1
ii  python3-louis              2.5.3-3
ii  python3-pyatspi            2.14.0+dfsg-1
ii  python3-speechd            0.8-7
pn  python3:any                <none>
ii  speech-dispatcher          0.8-7

Versions of packages gnome-orca recommends:
ii  libgail-common  2.24.25-1
ii  xbrlapi         5.2~20141018-2

gnome-orca suggests no packages.

-- no debconf information

-- 
Samuel
<c> tiens, je suis déçu
<c> quand on clique sur le bouton random de http://xkcd.com/221/ on ne tombe pas (toujours) sur http://xkcd.com/4/
<c> bon, j'envoie un bug-report à l'auteur
-------------- next part --------------
--- /tmp/gnome-orca-3.14.0/src/orca/braille.py	2014-09-18 14:43:51.000000000 +0200
+++ src/orca/braille.py	2015-02-02 00:19:04.215929615 +0100
@@ -1719,6 +1719,15 @@
                 "Braille module has been initialized using WINDOWPATH=" \
                 + "%s" % windowPath)
         except:
+          try:
+            vtnr = os.environ["XDG_VTNR"]
+            _brlAPI.enterTtyModeWithPath()
+            _brlAPIRunning = True
+            debug.println(\
+                debug.LEVEL_CONFIGURATION,
+                "Braille module has been initialized using XDG_VTNR=" \
+                + "%s" % vtnr)
+          except:
             _brlAPI.enterTtyMode(tty)
             _brlAPIRunning = True
             debug.println(\