On Thu, 15 Dec 2022 at 21:38, Len Trigg <lenbok@gmail.com> 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.