* NEWS: Reword the post-2.3 change to not be so optimistic about

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 8d321cdf6740956929d9b321ffb153f961a8a1d5..2e757516d3302e29b2e74986a624ba0eab6e743b 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,14 +1,36 @@
 Bison News
 ----------
 
 Bison News
 ----------
 

-Changes in version 2.1a, 2006-02-13:
+Changes in version 2.3+:
+
+* The option `--report=look-ahead' has been changed to `--report=lookahead'.
+  The old spelling still works, but is not documented and may be removed
+  in a future release.
+
+Changes in version 2.3, 2006-06-05:
+
+* GLR grammars should now use `YYRECOVERING ()' instead of `YYRECOVERING',
+  for compatibility with LALR(1) grammars.
+
+* It is now documented that any definition of YYSTYPE or YYLTYPE should
+  be to a type name that does not contain parentheses or brackets.
+
+Changes in version 2.2, 2006-05-19:
+
+* The distribution terms for all Bison-generated parsers now permit
+  using the parsers in nonfree programs.  Previously, this permission
+  was granted only for Bison-generated LALR(1) parsers in C.
+
+* %name-prefix changes the namespace name in C++ outputs.
+
+* The C++ parsers export their token_type.

 
 * Bison now allows multiple %union declarations, and concatenates
   their contents together.
 
 * New warning: unused values
 
 * Bison now allows multiple %union declarations, and concatenates
   their contents together.
 
 * New warning: unused values

-  Typed right-hand side symbols whose values are not used are reported,
-  if the associated types have destructors.  For instance:
+  Right-hand side symbols whose values are not used are reported,
+  if the symbols have destructors.  For instance:

 
      exp: exp "?" exp ":" exp { $1 ? $1 : $3; }
        | exp "+" exp
 
      exp: exp "?" exp ":" exp { $1 ? $1 : $3; }
        | exp "+" exp


@@ -71,10 +93,10 @@ Changes in version 2.1a, 2006-02-13:
   for previous releases of Bison, and this one.
 
   If you wish to update, then make sure older version of Bison will
   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"'.
+  fail using `%require "2.2"'.

 
 * DJGPP support added.
 
 * DJGPP support added.

-
+\f

 Changes in version 2.1, 2005-09-16:
 
 * The C++ lalr1.cc skeleton supports %lex-param.
 Changes in version 2.1, 2005-09-16:
 
 * The C++ lalr1.cc skeleton supports %lex-param.


@@ -100,7 +122,7 @@ Changes in version 2.1, 2005-09-16:
   a syntax error associated with '%token NUM "number"' they might
   print 'syntax error, unexpected number' instead of 'syntax error,
   unexpected "number"'.
   a syntax error associated with '%token NUM "number"' they might
   print 'syntax error, unexpected number' instead of 'syntax error,
   unexpected "number"'.

-
+\f

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


@@ -143,8 +165,7 @@ Changes in version 2.0, 2004-12-25:
     This is a GNU extension.
 
   - The option `--report=lookahead' was changed to `--report=look-ahead'.
     This is a GNU extension.
 
   - The option `--report=lookahead' was changed to `--report=look-ahead'.

-    The old spelling still works, but is not documented and will be
-    removed.
+    [However, this was changed back after 2.3.]

 
   - Experimental %destructor support has been added to lalr1.cc.
 
 
   - Experimental %destructor support has been added to lalr1.cc.
 


@@ -411,8 +432,8 @@ Changes in version 1.50, 2002-10-04:
   produces additional information:
   - itemset
     complete the core item sets with their closure
   produces additional information:
   - itemset
     complete the core item sets with their closure

-  - lookahead [changed to `look-ahead' in 1.875e and later]
-    explicitly associate look-ahead tokens to items
+  - lookahead [changed to `look-ahead' in 1.875e through 2.3, but changed back]
+    explicitly associate lookahead tokens to items

   - solved
     describe shift/reduce conflicts solving.
     Bison used to systematically output this information on top of
   - solved
     describe shift/reduce conflicts solving.
     Bison used to systematically output this information on top of