battery-search-for-one-match-in-files
battery-search-for-one-match-in-files is a compiled Lisp function in `battery.el
'.
(battery-search-for-one-match-in-files FILES REGEXP MATCH-NUM)
Search REGEXP in the content of the files listed in FILES.
If a match occurred, return the parenthesized expression numbered by
MATCH-NUM in the match. Otherwise, return nil.