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[Neal McBurnett <neal@xxxxxxxxxxxxxxxxx>]

Re: #20 - it looks like it is upstream that changed to super+space, not Debian:
 https://github.com/ibus/ibus/releases

1.5.3: Release 1.5.3  Takao Fujiwara fujiwarat released this on Jul 26,
2013....  This version changes the default hotkey from Control + space
to Super + space. You can customize the hotkey with ibus-setup.

The code changes (to more than just the xml file, Jorge) are here:

Defalut triggers key is changed to <Super>space. · f3d80dc · ibus/ibus
 https://github.com/ibus/ibus/commit/f3d80dc026853c1024cdf6bda31b1496939cb095

So Ubuntu is overriding upstream!  Why?

Aha - it is patched back to ctrl-space in patches/ibus-xx-ctrl-
space.patch as a "transitional solution in trusty" because of this bug
in gnome-settings-daemon I guess:

Bug #1249208 “Avoid conflicting <Super>Space shortcut with g-s-d...” : Bugs : “ibus” package : Ubuntu
 https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/1249208

Trusty LTS is not a release to be doing transitional solutions in....

This bug among other things has caused me to lose data in emacs, because
set-mark-command doesn't work from ctrl-space like it has for what,
decades?  And my fingers expect it to continue to work that way.  I set
the mark and delete the region as a muscle macro.  Very dangerous.

This needs to work right for all the desktops, rather than breaking it
for everything except one desktop.

-- 
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Packages, which is subscribed to ibus in Ubuntu.
https://bugs.launchpad.net/bugs/1278569

Title:
  ibus breaks emacs and eclipse control-space keybinding

Status in “ibus” package in Ubuntu:
  Triaged

Bug description:
  Installing ibus 1.5.5-1ubuntu1 breaks Emacs 24's control-space
  keybinding.  I generally have that bound to a custom lisp function,
  but by default (e.g. starting with `emacs -Q`) it is bound to set-
  mark-command.  After doing a dist-upgrade in Trusty which installs
  ibus 1.5.5-1ubuntu1, emacs no longer even sees the control-space key
  chord.  My guess is that ibus is consuming this event, preventing
  emacs from seeing it.  This is a critical regression that makes emacs
  almost unusable.

  By process of elimination, I've narrowed it down to one of these 4
  binary packages.

  gir1.2-ibus-1.0
  ibus
  ibus-gtk
  ibus-gtk3

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ibus 1.5.5-1ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-8.27-generic 3.13.2
  Uname: Linux 3.13.0-8-generic x86_64
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Feb 10 15:15:57 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-12-06 (66 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  SourcePackage: ibus
  UpgradeStatus: No upgrade log present (probably fresh install)

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