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[Launchpad Bug Tracker <1463663@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package x11-utils - 7.6+4ubuntu0.2

---------------
x11-utils (7.6+4ubuntu0.2) precise-proposed; urgency=medium

  * Add 101_xprop_bad_format_character_utf8_string.patch: Fix xprop
    bad format character error whn using UTF-8 strings.
    (LP: #1463663)

 -- Alberto Milone <alberto.milone@xxxxxxxxxxxxx>  Thu, 11 Jun 2015
09:45:25 +0200

** Changed in: x11-utils (Ubuntu Precise)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1463663

Title:
  [SRU] Enable setting property of type UTF8_STRING

Status in x11-utils package in Ubuntu:
  Fix Released
Status in x11-utils source package in Precise:
  Fix Released

Bug description:
  [Impact]
  Xprop added support for UTF8_STRING back in 2009:
  http://cgit.freedesktop.org/xorg/app/xprop/commit/?id=eb64005382abf6262c913a46e6186e019a179d59

  Unfortunately `xprop -f 8u -set` has been broken until 2012:
  http://cgit.freedesktop.org/xorg/app/xprop/commit/?id=0d069c0edae83f70ac10fab1a3c04d8197e277c4

  That patch has not been backported to Ubuntu 12.04.1 (x11-utils 7.6+4), so it's impossible to use "8u" there.
  One notable use case is with LTSP, where we're using xprop as an ad-hoc mechanism for server<=>thin clients communication, and we were recently asked to add UTF8 support to it:
  https://bugs.launchpad.net/ltsp/+bug/1451915

  [Test Case]
  This is how to reproduce the issue on Precise 12.04.1:
  $ lsb_release -r
    Release:    12.04
  $ dpkg-query -W x11-utils
    x11-utils   7.6+4ubuntu0.1
  $ xprop -root -f LTSP_COMMAND 8u -set LTSP_COMMAND xterm
    xprop: error: bad format character: u

  This is what the correct output looks like on Trusty 14.04.2:
  $ lsb_release -r
    Release:    14.04
  $ dpkg-query -W x11-utils
    x11-utils   7.7+1
  $ xprop -root -f LTSP_COMMAND 8u -set LTSP_COMMAND xterm
    <no output, no error>
  $ xprop -root | grep LTSP_COMMAND
    LTSP_COMMAND(UTF8_STRING) = "xterm"

  [Regression Potential]
  Low, the patch comes from upstream and it's already included in all Ubuntu versions after 12.04.1.

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