In some cases where two recognizers match the same string, you can
specify in Gforth (since 1.0) which recognizer you want to use, with
recognizer?string, where recognizer is the
name of the recognizer without the rec- prefix, and
string is the string you want to recognize. E.g.,
float?1. uses rec-float to recognize a string that would
otherwise be recognized as a double-cell integer number (because
rec-num is earlier in the recognizer sequence than
rec-float).