gthumb ignores locale and cannot handle non-ASCII filenames

[Ulli Horlacher]

gthumb (version 2.10.11) ignores locale settings and cannot display images
with non-ASCII filenames.

framstag@diaspora:~: locale
LANG=en_US.iso885915
LANGUAGE=en_US:en
LC_CTYPE="en_US.iso885915"
LC_NUMERIC="en_US.iso885915"
LC_TIME="en_US.iso885915"
LC_COLLATE="en_US.iso885915"
LC_MONETARY="en_US.iso885915"
LC_MESSAGES="en_US.iso885915"
LC_PAPER="en_US.iso885915"
LC_NAME="en_US.iso885915"
LC_ADDRESS="en_US.iso885915"
LC_TELEPHONE="en_US.iso885915"
LC_MEASUREMENT="en_US.iso885915"
LC_IDENTIFICATION="en_US.iso885915"
LC_ALL=

framstag@diaspora:~: set | grep ^G_
G_BROKEN_FILENAMES=en_US.iso885915
G_FILENAME_ENCODING=@locale

framstag@diaspora:~: ls -l x*png
-rw-r--r-- 1 framstag users 302561 2011-12-22 11:37 xöx.png

framstag@diaspora:~: gthumb x*png
(gthumb:24659): Pango-WARNING **: Invalid UTF-8 string passed to pango_layout_set_text()

... and gthumb does not display the image, though other image viewers like
eog have no problem with it!

framstag@diaspora:~: lsb_release -rd
Description: Ubuntu 10.04.3 LTS
Release: 10.04

framstag@diaspora:~: apt-cache policy gthumb
gthumb:
  Installed: 3:2.11.2.1.is.2.10.11-0ubuntu1
  Candidate: 3:2.11.2.1.is.2.10.11-0ubuntu1
  Version table:
 *** 3:2.11.2.1.is.2.10.11-0ubuntu1 0
        500 http://de.archive.ubuntu.com/ubuntu/ lucid/universe Packages
        100 /var/lib/dpkg/status