- bi-drop-char CHARprocedure
Matches CHAR, contributing nothing to the parsed value list; on print, emits CHAR without consuming a value. This is the usual way to write a fixed piece of punctuation -- a comma, an @ sign -- inside define-bi-rule.
Matches CHAR, contributing nothing to the parsed value list; on print, emits CHAR without consuming a value. This is the usual way to write a fixed piece of punctuation -- a comma, an @ sign -- inside define-bi-rule.