X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/fdac0091ce81d8b374488d24f2fcebde045bc333..04877eec24484987b78387708e0a247b558b23cb:/NEWS

diff --git a/NEWS b/NEWS
index 98d4f939..63ad026b 100644
--- a/NEWS
+++ b/NEWS
@@ -1,10 +1,72 @@
 Bison News
 ----------
 
-Changes in version 1.75b:
+Changes in version 1.75e, 2002-12-24:
 
-* Bison now parses C99 lexical constructs like digraphs, UCNs, and
-  backslash-newline within C escape sequences, as POSIX now requires.
+* 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+  withdrawn in a future release.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"
+  Bison now uniformly uses the term "syntax error"; formerly, the code
+  and manual sometimes used the term "parse error" instead.  POSIX
+  requires "syntax error" in diagnostics, and it was thought better to
+  be consistent.
+
+* "parsing stack overflow..." -> "parser stack overflow"
+  GLR parsers now report "parser stack overflow" as per the Bison manual.
+
+* GLR and inline
+  Users of Bison have to decide how they handle the portability of the
+  C keyword `inline'.
+
+Changes in version 1.75b, 2002-11-13:
+
+* %destructor
+  It is now possible to reclaim the memory associated to symbols
+  discarded during error recovery.  This feature is still experimental.
+
+* Bison now parses C99 lexical constructs like UCNs and
+  backslash-newline within C escape sequences, as POSIX 1003.1-2001 requires.
 
 * --no-line works properly.
 
@@ -16,6 +78,9 @@ Changes in version 1.75b:
   In addition, they provide a means for yyerror to remain pure, and
   to access to the current location.
 
+  #defining yyerror to steal internal variables is strongly
+  discouraged.  It is not guaranteed to work for ever.
+
 * #line
   Bison now recognizes #line in its input, and forwards them.
 
@@ -157,9 +222,9 @@ Changes in version 1.50, 2002-10-04:
   the user symbol is used in the reports, the graphs, and the verbose
   error messages instead of `$end', which remains being the default.
   For instance
-     %token YYEOF 0
+     %token MYEOF 0
   or
-     %token YYEOF 0 "end of file"
+     %token MYEOF 0 "end of file"
 
 * Semantic parser
   This old option, which has been broken for ages, is removed.
@@ -463,16 +528,17 @@ End:
 
 -----
 
-Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free
+Software Foundation, Inc.
 
-This file is part of GNU Autoconf.
+This file is part of Bison, the GNU Compiler Compiler.
 
-GNU Autoconf is free software; you can redistribute it and/or modify
+Bison is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2, or (at your option)
 any later version.
 
-GNU Autoconf is distributed in the hope that it will be useful,
+Bison is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.