* lisp/gnus/gnus-search.el (gnus-search-indexed-parse-output): Generic
function arg list didn't match the method arglist, which made for
confusing function help.
;; First, some common methods.
-(cl-defgeneric gnus-search-indexed-parse-output (engine server &optional groups)
- "Parse the results of ENGINE's query against SERVER in GROUPS.
+(cl-defgeneric gnus-search-indexed-parse-output (engine server query &optional groups)
+ "Parse the results of ENGINE's QUERY against SERVER in GROUPS.
Locally-indexed search engines return results as a list of
filenames, sometimes with additional information. Returns a list
of viable results, in the form of a list of [group article score]