policy for window managers
I maintain KDE, which includes a window manager, and I've been wondering how
other window managers handle registering themselves in
/etc/X11/window-managers. So I took a look at all th window managers.
Some window managers add themselves to the top of the file, so they become the
default window manager. Others add themselves to the bottom of the file, so
the sysadmin doesn't get a chance to use them as a default window manager
without editing the file. And many window managers don't add themselves to the
file at all.
Here's a survey I did:
window manager adds itself to /etc/X11/window-managers how
kde adds to bottom
afterstep adds to bottom
fvwm doesn't do so
fvwm2 doesn't seem to do so (complex postinst, I just grepped it :-)
fvwm95 adds to top
gwm doesn't do so
9wm doesn't do so
ctwm doesn't do so
wm2 doesn't do so
wmaker doesn't do so
olvwm if olvwm entry not already present, prompt to make
default window manager or not, insert line in appropriate
I think olvwm's behavior is the best of the lot, since it gives the sysadmin
a choice (and only asks once, not during upgrades, which is also very good
behavior). I wonder if it'd be a good idea for one of the X packages to
include a register-window-manager script that could be called from the
postinst's to handle this, so all window managers functioned exactly alike?
Here's the code from olvwm's postinst:
# add olvwm to /etc/X11/window-managers
if ! grep -q /usr/X11R6/bin/olvwm /etc/X11/window-managers; then
echo -n "Make olvwm the default window manager? [Y] "
test -n "$yn" || yn="Y"
case "$yn" in
# append olvwm line to the end
echo "/usr/X11R6/bin/olvwm" >>/etc/X11/window-managers
# insert olvwm line after initial comments
cp /etc/X11/window-managers /tmp/$$
perl -e 'print while ($_ = <>) =~ /^#/; \
print "/usr/X11R6/bin/olvwm\n"; \
print while <>;' <//tmp/$$ >/etc/X11/window-managers
see shy jo
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