Bison News
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+Changes in version 1.75e, 2002-12-24:
+
+* If the user does not define YYSTYPE as a macro, Bison now declares it
+ using typedef instead of defining it as a macro. POSIX requires this.
+ For consistency, YYLTYPE is also declared instead of defined.
+
+* %union directives can now have a tag before the `{', e.g., the
+ directive `%union foo {...}' now generates the C code
+ `typedef union foo { ... } YYSTYPE;'; this is for Yacc compatibility.
+ The default union tag is `YYSTYPE', for compatibility with Solaris 9 Yacc.
+ For consistency, YYLTYPE's struct tag is now `YYLTYPE' instead of `yyltype'.
+
+* `yystype' and `yyltype' are now obsolescent macros instead of being
+ typedefs or tags; they are no longer documented and will be
+ withdrawn in a future release.
+
+* References to the experimental %lex-param and %parse-param directives
+ have been temporarily removed from the manual, since we don't want
+ users to rely upon these features quite yet.
+
+Changes in version 1.75d, 2002-12-13:
+
+* Semicolons are once again optional at the end of grammar rules.
+ This reverts to the behavior of Bison 1.33 and earlier, and improves
+ compatibility with Yacc.
+
+* Type clashes now generate warnings, not errors.
+
+* Yacc command and library now available
+ The Bison distribution now installs a yacc command, as POSIX requires.
+ Also, Bison now installs a small library liby.a containing
+ implementations of Yacc-compatible yyerror and main functions.
+ This library is normally not useful, but POSIX requires it.
+
+* %lex-param, %parse-param
+ These now take just one operand, not two.
+
+* The documentation now emphasizes that yylex and yyerror must be
+ declared before use. C99 requires this.
+
+* The documentation license has been upgraded to version 1.2
+ of the GNU Free Documentation License.
+
Changes in version 1.75c, 2002-11-25:
* "parse error" -> "syntax error"
-----
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