yyextract(1) on Linux
The text 77d5d4253e3c, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
extract grammar rules from a yacc grammar
Flags it lists
-
-V -
-b -
-e -
-h -
-o -
-w -
-y