Bison News
----------
+Changes in version 1.875e, 2004-12-10:
+
+* New directive: %initial-action.
+ This directive allows the user to run arbitrary code (including
+ initializing @$) from yyparse before parsing starts.
+
+* The option `--report=lookahead' was changed to `--report=look-ahead'.
+ The old spelling still works, but is not documented and will be
+ removed.
+
+* Error token location.
+ During error recovery, the location of the syntax error is updated
+ to cover the whole sequence covered by the error token: it includes
+ the shifted symbols thrown away during the first part of the error
+ recovery, and the lookahead rejected during the second part.
+
+* Goto numbers are no longer arbitrarily limited to 16-bit counts.
+
Changes in version 1.875d, 2004-05-21:
* Unescaped newlines are no longer allowed in character constants or
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>.
+ Paul Eggert, "Reductions during Bison error handling" (2002-05-20)
+ <http://lists.gnu.org/archive/html/bug-bison/2002-05/msg00038.html>.
* Traces
Popped tokens and nonterminals are now reported.
produces additional information:
- itemset
complete the core item sets with their closure
- - lookahead
- explicitly associate lookaheads to items
+ - lookahead [changed to `look-ahead' in 1.875e and later]
+ explicitly associate look-ahead tokens to items
- solved
describe shift/reduce conflicts solving.
Bison used to systematically output this information on top of
projects / bison.git / blobdiff