Changes in version 1.49b:
+* Output Directory
+ When not in Yacc compatibility mode, when the output file was not
+ specified, runnning `bison foo/bar.y' created `foo/bar.c'. It
+ now creates `bar.c'.
+
* Undefined token
The undefined token was systematically mapped to 2 which prevented
the use of 2 from the user. This is no longer the case.
Before, Bison reported the useless rules, but, although not used,
included them in the parsers. They are now actually removed.
+* Useless rules, useless nonterminals
+ They are now reported, as a warning, with their locations.
+
* Incorrect `Token not used'
On a grammar such as