https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124464
--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Or:
crab1: error: expected ')' to match unclosed ‘(’ in command-line argument 2
'-frust-crate-attr'
argument[2] | -frust-crate-attr="(option1"
| ^
Note that if the message mentions the comment-line argument in quotes, the
diagnostics subsystem ought to give that part of the message a URL to the
documentation of that argument in a suitably modern terminal (and in SARIF and
HTML output).
