"Lennart Borgman (gmail)" <address@hidden> writes:
M-SPC seems to be trapped by this window manager (metacity) so it may
not be a very good binding for a lot of people (since metacity gets many
of its keybinding cues from windows, I'd also check whether windows
traps that)...
Windows does not trap M-SPC but Alt-SPC. But, yes, it will be a problem
on w32 too as long as Alt is use for Emacs META.
Er, well, the concept of "M-" is often kind of fuzzy at a WM level
(since keyboards generally don't say "Meta" anywhere), but yeah, many
WMs seem to trap key bindings that may be what Emacs thinks of as
"M-SPC".