Bug#791548: gtk-theme-config: clicking on Revert silently removes the user's .gtkrc-2.0 file

[Vincent Lefevre]

Package: gtk-theme-config
Version: 1.0-1
Severity: critical
Justification: causes serious data loss

I was wondering why Iceweasel was no longer working as expected...
I finally found the cause: my ~/.gtkrc-2.0 file had been removed.
Then I remembered that I used gtk-theme-config recently. After
some tests, clicking on the "Revert" button has this effect of
removing the ~/.gtkrc-2.0 file, without even leaving a backup!

When changing some settings, gtk-theme-config modifies this file.
But when the user clicks on "Revert", gtk-theme-config should just
remove the settings it added, e.g. by using begin/end markers, not
the whole file! Or if is this too difficult, it should warn the
user before doing a destructive operation.

Note also that it isn't documented at all that gtk-theme-config
uses the ~/.gtkrc-2.0 file. This is even more surprising as
gtk-theme-config depends on libgtk-3-0 (thus GTK+ 3, not GTK+ 2).

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.0.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages gtk-theme-config depends on:
ii  gconf2                     3.2.6-3
ii  gsettings-desktop-schemas  3.16.1-1
ii  libatk1.0-0                2.16.0-2
ii  libc6                      2.19-18
ii  libcairo-gobject2          1.14.2-2
ii  libcairo2                  1.14.2-2
ii  libgdk-pixbuf2.0-0         2.31.4-2
ii  libglib2.0-0               2.44.1-1.1
ii  libgtk-3-0                 3.16.4-2
ii  libpango-1.0-0             1.36.8-3
ii  libpangocairo-1.0-0        1.36.8-3
ii  libx11-6                   2:1.6.3-1

Versions of packages gtk-theme-config recommends:
ii  xfconf  4.12.0-2+b1

gtk-theme-config suggests no packages.

-- no debconf information