Undo the parts of the unlocked-I/O change that substituted

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index fbbda02775dc88bb4f7ade1d3ede7d1d8d4c45af..f0710fd80d29e29d23abe90a8f846978ad645ea9 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -5,6 +5,9 @@ Changes in version 2.1a:
 
 * DJGPP support added.
 
 
 * DJGPP support added.
 

+* %require "VERSION"
+  To specify the youngest version of Bison accepted by the grammar file.
+

 * 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:
 * 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:


@@ -13,8 +16,11 @@ Changes in version 2.1a:
 
   If you do not want or can update to this scheme, the directive
   `%define "global_tokens_and_yystype" "1"' triggers the global
 
   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.
+  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"'.

 
 Changes in version 2.1, 2005-09-16:
 
 
 Changes in version 2.1, 2005-09-16: