bug#74496: 30.0.91; fullscreen frame set with F11 is shifted when ctwm restarts

[martin rudalics]

> A watch guard on the full height parameter would notice the effect ctwm
> restart has taken place and the value has changed but maybe emacs can't
> tell the difference between human or environment invoked change on the
> height parameter.  A heuristic could suggest to emacs ctwm restarted
> when the bottom edge is raised less than 10 pixels.

I attached a function you can add to 'window-size-change-functions'.  It
seems to work here but make sure to use it only with a Lucid build.

With a GTK build I was able to crash CTWM as

ctwm:  restarting:  ctwm
sh: 1: /usr/X11R7/libexec/ctwm_font_size: not found
sh: 1: /usr/X11R7/libexec/ctwm_app_menu: not found
/usr/bin/m4: syscmd subprocess failed
xterm: fatal IO error 11 (Die Ressource ist zur Zeit nicht verfügbar) or KillClient on X 
server ":0.0"
xterm: fatal IO error 11 (Die Ressource ist zur Zeit nicht verfügbar) or KillClient on X 
server ":0.0"
X connection to :0 broken (explicit kill or server shutdown).

> Why is it that F11 fullscreen maximizes the frame without gap at bottom?
> When frame-resize-pixelwise is nil, shouldn't the frame's line height
> effect leave a gap at bottom?

Apparently F11 is not affected by size hint increments.  The X11 manuals are
not clear about this.

martin

ctwm-restart.el
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