build: fix VPATH issue

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 7df5d87ef102132899944518407a5e0c15563343..619d36cdc985f128cbe7514362eab41a52cc2484 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -6,13 +6,22 @@ GNU Bison NEWS
 
 *** Obsolete features
 
-  Support for YYFAIL is removed (deprecated in Bison 2.4.2).
-  Support for yystype and yyltype (instead of YYSTYPE and YYLTYPE)
-  is removed (deprecated in Bison 1.875).
-  Support for YYPARSE_PARAM is removed (deprecated in Bison 1.875).
+  Support for YYFAIL is removed (deprecated in Bison 2.4.2): use YYERROR.
+
+  Support for yystype and yyltype is removed (deprecated in Bison 1.875):
+  use YYSTYPE and YYLTYPE.
+
+  Support for YYLEX_PARAM and YYPARSE_PARAM is removed (deprecated in Bison
+  1.875): use %lex-param, %parse-param, or %param.
 
 ** Warnings
 
+*** Carets
+
+  Version 2.7 introduced caret errors, for a prettier output.  These are now
+  activated by default.  The old format can still be used by invoking Bison
+  with -fno-caret (or -fnone).
+
 *** Enhancements of the -Werror option
 
   The -Werror=CATEGORY option is now recognized, and will treat specified
@@ -195,6 +204,28 @@ GNU Bison NEWS
   used by the scanner, or rejecting invalid combinations from a
   factory invoked by the user actions).
 
+*** The epilogue is no longer affected by internal #defines
+
+  The glr.c skeleton uses defines such as #define yylval (yystackp->yyval) in
+  generated code.  These weren't properly undefined before the inclusion of
+  the user epilogue, so functions such as the following were butchered by the
+  preprocessor expansion:
+
+    int yylex (yy::parser::semantic_type *yylval);
+
+  This is has been fixed: yylval, ynerrs, yychar, and yylloc are now valid
+  identifiers for user-provided variables.
+
+** Renamed %define variables
+
+  The following variables have been renamed for consistency.  Backward
+  compatibility is ensured, but upgrading is recommended.
+
+    lr.default-reductions      -> lr.default-reduction
+    lr.keep-unreachable-states -> lr.keep-unreachable-state
+    namespace                  -> api.namespace
+    stype                      -> api.value.type
+
 ** Variable api.token.prefix
 
   The variable api.token.prefix changes the way tokens are identified in
@@ -211,14 +242,7 @@ GNU Bison NEWS
   use these prefixed token names, although the grammar itself still
   uses the short names (as in the sample rule given above).
 
-** Renamed %define variables
 
-  The following variables have been renamed for consistency.  Backward
-  compatibility is ensured, but upgrading is recommended.
-
-    lr.default-reductions      -> lr.default-reduction
-    lr.keep-unreachable-states -> lr.keep-unreachable-state
-    namespace                  -> api.namespace
 
 ** Variable parse.error
 
@@ -240,17 +264,14 @@ GNU Bison NEWS
   It used to be an error only if used in non GLR mode, _and_ if there are
   reduce/reduce conflicts.
 
-* Noteworthy changes in release ?.? (????-??-??) [?]
-
-** %language is no longer an experimental feature.
-
-  The introduction of this feature, in 2.4, was four years ago. The --language
-  option and the %language directive are no longer experimental.
+* Noteworthy changes in release 2.7 (2012-12-12) [stable]
 
 ** Bug fixes
 
   Warnings about uninitialized yylloc in yyparse have been fixed.
 
+  Restored C90 compliance (yet no report was ever made).
+
 ** Diagnostics are improved
 
 *** Changes in the format of error messages
@@ -748,6 +769,7 @@ GNU Bison NEWS
 
   These features are experimental in this version.  More user feedback
   will help to stabilize them.
+  Contributed by Alex Rozenman.
 
 ** IELR(1) and canonical LR(1):
 
@@ -1264,6 +1286,7 @@ GNU Bison NEWS
 
   The current Java interface is experimental and may evolve.  More user
   feedback will help to stabilize it.
+  Contributed by Paolo Bonzini.
 
 ** %language
 
@@ -1277,6 +1300,7 @@ GNU Bison NEWS
   Bison can now generate an XML report of the LALR(1) automaton using the new
   "--xml" option.  The current XML schema is experimental and may evolve.  More
   user feedback will help to stabilize it.
+  Contributed by Wojciech Polak.
 
 ** The grammar file may now specify the name of the parser header file using
   %defines.  For example: