On Thu, 15 Dec 2022 at 21:38, Len Trigg wrote: > Do you think it's just a matter of the dolist on line 466 of xterm.el > needing additional entries (I don't see one there for M-SPC)? > For example, I see there looks to be an entry for C-M-SPC: (7 32 [?\C-\M-\s]) And my wild speculation from looking at the example table "Other modified-key escapes" on https://invisible-island.net/xterm/modified-keys-us-pc105.html is that emacs would need an entry like: (3 32 [?\M-\s]) to handle the modifyOtherKeys encoding of "\E[27;3;32~" for M-SPC, but also that there are probably many many other sequences that aren't being handled. Cheers, Len. >