Since I installed Firefox Quantum and Firefox ESR 52 both (Kubuntu Trusty / KDE 4.13.3) it happens every time that any external web link is opened twice in my default browser. So I presume this is an system issue and not a Firefox issue.
The only things I changed manually are that I added personal executable scripts in "/usr/bin/" and "~/bin/" and changed the default browser so that I don't mix up with both firefox installations.
So "/usr/bin/" contains "firefox-esr" and "firefox.real" (for Quantum) which both are simply links to the start files of the according program folders in "/usr/lib/". In addition it contains a script "firefox" which might be cause of my problem, but I cant see it.
Here is the "/usr/bin/firefox" script:
#!/bin/sh
FIREFOX="$(which firefox)"
[ -x "$FIREFOX.real" ] && exec "$FIREFOX.real" "$@"
exec firefox-esr "$@"
→ which reports "~/bin/firefox" and "firefox.real" exists in both "/usr/bin/" and "~/bin/" directories as links to a script (see below).
Here is the "/usr/bin/firefox.real" script:
#!/bin/sh
set -e
MOZ_LIBDIR=/usr/lib/firefox
MOZ_APP_LAUNCHER=`which $0`
MOZ_APP_NAME=firefox
export MOZ_APP_LAUNCHER
while [ ! -x $MOZ_LIBDIR/$MOZ_APP_NAME ] ; do
if [ -L "$MOZ_APP_LAUNCHER" ] ; then
MOZ_APP_LAUNCHER=`readlink -f $MOZ_APP_LAUNCHER`
MOZ_LIBDIR=`dirname $MOZ_APP_LAUNCHER`
else
echo "Can't find $MOZ_LIBDIR/$MOZ_APP_NAME"
exit 1
fi
done
usage () {
$MOZ_LIBDIR/$MOZ_APP_NAME -h | sed -e 's,/.*/,,'
echo
echo " -g or --debug Start within debugger"
echo " -d or --debugger Specify debugger to start with (eg, gdb or valgrind)"
echo " -a or --debugger-args Specify arguments for debugger"
}
moz_debug=0
moz_debugger_args=""
moz_debugger="gdb"
while [ $# -gt 0 ]; do
case "$1" in
-h | --help )
usage
exit 0
;;
-g | --debug )
moz_debug=1
shift
;;
-d | --debugger)
moz_debugger=$2;
if [ "${moz_debugger}" != "" ]; then
shift 2
else
echo "-d requires an argument"
exit 1
fi
;;
-a | --debugger-args )
moz_debugger_args=$2;
if [ "${moz_debugger_args}" != "" ] ; then
shift 2
else
echo "-a requires an argument"
exit 1
fi
;;
-- ) # Stop option processing
shift
break
;;
* )
break
;;
esac
done
if [ $moz_debug -eq 1 ] ; then
case $moz_debugger in
memcheck)
debugger="valgrind"
;;
*)
debugger=$moz_debugger
;;
esac
debugger=`which $debugger`
if [ ! -x $debugger ] ; then
echo "Invalid debugger"
exit 1
fi
case `basename $moz_debugger` in
gdb)
exec $debugger $moz_debugger_args --args $MOZ_LIBDIR/$MOZ_APP_NAME "$@"
;;
memcheck)
echo "$MOZ_APP_NAME has not been compiled with valgrind support"
exit 1
;;
*)
exec $debugger $moz_debugger_args $MOZ_LIBDIR/$MOZ_APP_NAME "$@"
;;
esac
else
exec $MOZ_LIBDIR/$MOZ_APP_NAME "$@"
fi
In addition to these I wanted to add my personal override executables under "~/bin/". Here I relinked "firefox" and "firefox.real" to "./firefox-quantum" which lets me run this with a separate profile – "~/bin/firefox-quantum":
#!/bin/bash
/usr/bin/firefox.real -no-remote -P "########.default-quantum" "$@"
According to this I did the same with "~/bin/firefox-esr" which is my default browser (for the default profile):
#!/bin/bash
/usr/bin/firefox-esr "$@"
The default browser command is now:
firefox-esr -new-tab %u
Why are external web links opened twice? I cannot find the problem.
Might the cause be the "/usr/bin/firefox" script? Shouldn't it start firefox twice because there is of cause "firefox.real" and so it should start "firefox.real" AND "firefox-esr"? Or didn't I understand the exec command?
%u
parameter for the default browser was redundant.