Updating path-traversal to allow input that's been verified with isalnum()
I tried lifting isalnum() into a metavariable $S and matching it with metavariable-regex but it seems that this requires that $S is also defined in every other pattern in the patterns block (otherwise the regex never matches)
Notes
path-traversalto allow input that's been verified withisalnum()isalnum()into a metavariable$Sand matching it withmetavariable-regexbut it seems that this requires that$Sis also defined in every other pattern in thepatternsblock (otherwise the regex never matches)Testing