debug-init

Debugger entered--Lisp error: (error "Unknown rx form `group-n'")
  signal(error ("Unknown rx form `group-n'"))
  error("Unknown rx form `%s'" group-n)
  rx-form((group-n 1 (1+ (not ...))) :)
  #[(x) "\301\302\"\207" [x rx-form :] 3]((group-n 1 (1+ (not ...))))
  mapconcat(#[(x) "\301\302\"\207" [x rx-form :] 3] ("[" (group-n 1 (1+ ...)) "]" (or (and "(" ... ")") (and "[" ... "]"))) nil)
  rx-and((and "[" (group-n 1 (1+ ...)) "]" (or (and "(" ... ")") (and "[" ... "]"))))
  rx-form((and "[" (group-n 1 (1+ ...)) "]" (or (and "(" ... ")") (and "[" ... "]"))))
  rx-to-string((and "[" (group-n 1 (1+ ...)) "]" (or (and "(" ... ")") (and "[" ... "]"))) t)
  #[(&rest regexps) "\204