Forwarded from http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=468578

Currently, the gedit binary's behaviour when called when an instance of gedit
ist already open is the following:

1) Files named on the command line open as new tabs in the existing instance
2) The new instance exits

This is problematic for most utilities using an external text editor, because
they usually

1) call $EDITOR and
2) wait for that process to exit and
3) assume that you are now finished editing the file(s).

Obviously, when EDITOR=gedit, there's a good chance that you haven't even
started editing.

Therefore, I suggest that gedit should have an additional mode specifically
for use as $EDITOR, in which the new gedit process stays open (sleeping, if
necessary) until all files mentioned on the command line have been closed in
whatever gedit instance they are being edited in.