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[Bug 1521041] [NEW] incorrect logic for setting XDG_DATA_DIRS

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Björn Lindqvist <bjourne@xxxxxxxxx>
Date: Mon, 30 Nov 2015 03:08:46 -0000
Reply-to: Bug 1521041 <1521041@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Public bug reported:

Please reassign to the right component if it should be something other
than "debconf". The bug is in the file:
/etc/X11/Xsession.d/60x11-common_xdg_path It was originally discovered
in http://blog.sarine.nl/2012/03/04/gnome-3-and-setting-custom-
xdg_data_dirs/ but I can reproduce it in ubuntu 15.10.

If you want to add extra XDG_DATA_DIRS, you ought to be able to write
something like:

export XDG_DATA_DIRS="$XDG_DATA_DIRS:/opt/emacs/share"

But then the default xdg data dirs wont be added, causing lightdm to
crash when you login. Essentially, the line:

XDG_DATA_DIRS=/usr/share/"$DESKTOP_SESSION":"$XDG_DATA_DIRS"

should be changed to:

XDG_DATA_DIRS=/usr/share/"$DESKTOP_SESSION":"$DEFAULT_XDG_DATA_DIRS":"$XDG_DATA_DIRS"

I hope that explanation makes sense. The directories
/usr/local/share/:/usr/share/ should *always* be added to XDG_DATA_DIRS.

** Affects: debconf (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1521041

Title:
  incorrect logic for setting XDG_DATA_DIRS

Status in debconf package in Ubuntu:
  New

Bug description:
  Please reassign to the right component if it should be something other
  than "debconf". The bug is in the file:
  /etc/X11/Xsession.d/60x11-common_xdg_path It was originally discovered
  in http://blog.sarine.nl/2012/03/04/gnome-3-and-setting-custom-
  xdg_data_dirs/ but I can reproduce it in ubuntu 15.10.

  If you want to add extra XDG_DATA_DIRS, you ought to be able to write
  something like:

  export XDG_DATA_DIRS="$XDG_DATA_DIRS:/opt/emacs/share"

  But then the default xdg data dirs wont be added, causing lightdm to
  crash when you login. Essentially, the line:

  XDG_DATA_DIRS=/usr/share/"$DESKTOP_SESSION":"$XDG_DATA_DIRS"

  should be changed to:

  XDG_DATA_DIRS=/usr/share/"$DESKTOP_SESSION":"$DEFAULT_XDG_DATA_DIRS":"$XDG_DATA_DIRS"

  I hope that explanation makes sense. The directories
  /usr/local/share/:/usr/share/ should *always* be added to
  XDG_DATA_DIRS.

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