pub const LEXICON_ETC_PATH: &str = r"\A[^\n]*[/\\](?:etc/(?:passwd|shadow|group|hosts|motd|issue|mysql/my\.cnf|ssh/ssh_config))(?:[/\\][\w.\-~%]{1,64})?(?:[/\\][\w.\-~%]{1,64})?(?:[/\\][\w.\-~%]{1,64})?\b";Expand description
Lexicon-lookahead path shapes (ids 33/102/107/110/112/115): the reference
pattern is \A(?=LEXICON-in-first-line)\A<path-shape>; the lexicon
membership becomes a guard on the compiled path shape.