Pushed. Alligator is turning green in the back branches, only one more to go.
I see that Peter also pushed the reserved word patches. Apparently
that gcc bug it's blowing up on might go away with -g0 (see link
earlier), but anyway it's a nightly build compiler so fingers crossed
for a fix soon. The newer branches are building and running for me on
{ gcc14, gcc15, clang18 } -std=gnu23, and apparently the bug was even
in gcc14, so it must require some unlikely conditions that alligator
has stumbled on.
(Yeah I had missed 10, thanks for the nudge.)