* src/reader.c (grammar_midrule_action): New, Eved out from

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 50fb91efc51d433a15aff9430e871b4a9b29d404..e4acf388f9a024bc14ff4a802d1a2bc69c5bdd94 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -17,6 +17,18 @@ Changes in version 1.49b:
   user specified that one of her tokens is numbered 256, then error
   will be mapped onto another number.
 
+* Error recovery now conforms to documentation and to POSIX
+  When a Bison-generated parser encounters a syntax error, it now pops
+  the stack until it finds a state that allows shifting the error
+  token.  Formerly, it popped the stack until it found a state that
+  allowed some non-error action other than a default reduction on the
+  error token.  The new behavior has long been the documented behavior,
+  and has long been required by POSIX.  For more details, please see
+  <http://mail.gnu.org/pipermail/bug-bison/2002-May/001452.html>.
+
+* Traces
+  Popped tokens and nonterminals are now reported.
+
 * Large grammars
   Large grammars are now supported (large token numbers, large grammar
   size (= sum of the LHS and RHS lengths), large LALR tables).
@@ -61,7 +73,7 @@ Changes in version 1.49b:
 * Semantic parser
   This old option, which has been broken for ages, is removed.
 
-* New translations
+* New translation
   Croatian, thanks to Denis Lackovic.
 
 * Incorrect token definitions
@@ -72,6 +84,18 @@ Changes in version 1.49b:
   the compiler supports ANSI C or is a C++ compiler, as enums.
   This helps debuggers producing symbols instead of values.
 
+* Reports
+  In addition to --verbose, bison supports --report=THINGS, which
+  produces additional information:
+  - itemset
+    complete the core item sets with their closure
+  - lookahead
+    explicitly associate lookaheads to items
+  - solved
+    describe shift/reduce conflicts solving.
+    Bison used to systematically output this information on top of
+    the report.  Solved conflicts are now attached to their states.
+
 \f
 Changes in version 1.35, 2002-03-25: