btyacc(1) on Linux
The text 6aa9a32bb8f2, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
an LALR(1) parser generator with support for backtracking
Flags it lists
-
-DNAME -
-E -
-S -
-b -
-d -
-l -
-r -
-t -
-v