* NEWS: Bison now warns if it finds a stray `$' or `@' in an action.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index a3130f93d551a0d29e136d4b483930a0cbe3df84..2ab95345109392bae414f129aa9bea4e2d371f3f 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,54 @@
 Bison News
 ----------
 
 Bison News
 ----------
 

+Changes in version 2.1a:
+
+* Bison now warns if it finds a stray `$' or `@' in an action.
+
+* %require "VERSION"
+  To specify that the grammar file depends on features implemented in
+  Bison version VERSION or higher.
+
+* lalr1.cc: The token and value types are now class members.
+  The tokens where defined as free form enums and cpp macros.  YYSTYPE
+  was defined as a free form union.  Both are now class members:
+  tokens are enumerations of the `yy::parser::token' struct, and the
+  semantic values have the `yy::parser::semantic_type' type.
+
+  If you do not want or can update to this scheme, the directive
+  `%define "global_tokens_and_yystype" "1"' triggers the global
+  definition of tokens and YYSTYPE.  This change is suitable both
+  for previous releases of Bison, and this one.
+
+  If you wish to update, then make sure older version of Bison will
+  fail using `%require "2.1a"'.
+
+* DJGPP support added.
+
+Changes in version 2.1, 2005-09-16:
+
+* Bison-generated parsers now support the translation of diagnostics like
+  "syntax error" into languages other than English.  The default
+  language is still English.  For details, please see the new
+  Internationalization section of the Bison manual.  Software
+  distributors should also see the new PACKAGING file.  Thanks to
+  Bruno Haible for this new feature.
+
+* Wording in the Bison-generated parsers has been changed slightly to
+  simplify translation.  In particular, the message "memory exhausted"
+  has replaced "parser stack overflow", as the old message was not
+  always accurate for modern Bison-generated parsers.
+
+* Destructors are now called when the parser aborts, for all symbols left
+  behind on the stack.  Also, the start symbol is now destroyed after a
+  successful parse.  In both cases, the behavior was formerly inconsistent.
+
+* When generating verbose diagnostics, Bison-generated parsers no longer
+  quote the literal strings associated with tokens.  For example, for
+  a syntax error associated with '%token NUM "number"' they might
+  print 'syntax error, unexpected number' instead of 'syntax error,
+  unexpected "number"'.
+

 Changes in version 2.0, 2004-12-25:
 
 * Possibly-incompatible changes
 Changes in version 2.0, 2004-12-25:
 
 * Possibly-incompatible changes


@@ -399,6 +447,8 @@ Changes in version 1.31, 2002-01-14:
   alloca is used only when compiled with GCC, to avoid portability
   problems as on AIX.
 
   alloca is used only when compiled with GCC, to avoid portability
   problems as on AIX.
 

+* yyparse now returns 2 if memory is exhausted; formerly it dumped core.
+

 * When the generated parser lacks debugging code, YYDEBUG is now 0
   (as POSIX requires) instead of being undefined.
 
 * When the generated parser lacks debugging code, YYDEBUG is now 0
   (as POSIX requires) instead of being undefined.
 


@@ -593,7 +643,7 @@ End:
 
 -----
 
 
 -----
 

-Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.


@@ -610,5 +660,5 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with autoconf; see the file COPYING.  If not, write to
 
 You should have received a copy of the GNU General Public License
 along with autoconf; see the file COPYING.  If not, write to

-the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.