Synopsis:
   $getmatches(<array> <pattern>)
   $getrmatches(<array> <string>)

Technical:
   This functions operate in a manner similar to $matchitem() and
   $rmatchitem(), except that they return a list of all items that match
   the input pattern or string, not just the best match.  Item numbers
   are returned, not the actual array contents.

Practical:
   The $getmatches() function is used to retrieve all items in the given
   array that match the given pattern.  Similarly, $getrmatches() is used
   to retrieve all items that match the given string.

Returns:
   list of item numbers corresponding to matches

See Also:
   Arrays(7); matchitem(6); rmatchitem(6); igetmatches(6);
   igetrmatches(6); gettmatch(6)