[Bug other/124784] regenerate-opt-urls.py doesn't handle options starting with two dashes

[sandra at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124784

--- Comment #2 from sandra at gcc dot gnu.org ---
Patch posted here: 
https://gcc.gnu.org/pipermail/gcc-patches/2026-April/712271.html

I confess I have little fluency in Python and would appreciate somebody giving
that an eyeball before I commit it.