bug#1854: 23.0.60; Gnus opens browser tab twice

[Torsten Bronger <bronger@physik.rwth-aachen.de>]

If I open an email in Gnus with an HTML link, it is clickable.  If I click on
it, it opens the tab in Firefox *twice*.  This is behaviour that was introduced
in the CVS version only recently (well, I don't update often, so it may be a
few months old).



In GNU Emacs 23.0.60.7 (x86_64-unknown-linux-gnu)
 of 2009-01-04 on wilson
Windowing system distributor `The X.Org Foundation', version 11.0.10502000
configured using `configure  '--prefix=/usr/local/' '--mandir=/usr/local/share/man/' '--infodir=/usr/local/share/info/' '--with-x-toolkit=no' '--with-xpm' '--with-jpeg' '--with-tiff' '--with-gif' '--with-png' '--with-x''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  gnus-topic-mode: t
  gnus-undo-mode: t
  global-auto-revert-mode: t
  savehist-mode: t
  display-time-mode: t
  desktop-save-mode: t
  mouse-wheel-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> c <up> <up> <up> <up> <up> <return> M-> 
c <up> <up> <up> <up> <up> S k <up> <return> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <return> 
C-x 1 <next> <prior> <next> <prior> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <return> <down> 
<return> C-x 1 <next> <prior> c g <return> d d d <return> 
<up> <return> <help-echo> <help-echo> <down-mouse-1> 
<mouse-1> h h <down> <return> c g <down> <down> <down> 
<down> <return> c <return> <return> q q C-c g q C-c 
g L M-< M-< C-s p r e t r e <backspace> <backspace> 
e s t <left> C-s C-s C-s C-s <left> u l g <return> 
<down> <down> <down> <down> <down> <down> <down> <return> 
c C-u a G n u s SPC o p e n s SPC F i r e f o x SPC 
T a b <backspace> <backspace> <backspace> t a b SPC 
t w i c e <down> <down> <down> <down> <down> C-c C-k 
y e s <return> M-x r e p o <tab> r <tab> e m a <tab> 
b u <tab> <return>

Recent messages:
Reading active file via nnml...done
Checking new news...done
Retrieving newsgroup: gmane.emacs.pretest.bugs...
Fetching headers for gmane.emacs.pretest.bugs...done
Generating summary...done
Auto-saving...
No more unread newsgroups
Local Ispell dictionary set to british
Fill column set to 68 (was 72)
Making completion list...