X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/69363a9e4d0b8d3b51536434d3395d38519f617b..6dde1c82cd2961df2fcb508b694d64b4d485f279:/NEWS diff --git a/NEWS b/NEWS index 114a0fd1..36c20426 100644 --- a/NEWS +++ b/NEWS @@ -1,12 +1,53 @@ Bison News ---------- -Changes in version 1.875a: +Changes in version 1.875e: -* %expect-count violations are now just warnings, not errors, for - compatibility with Bison 1.75 and earlier (when there are +* 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. + +Changes in version 1.875d, 2004-05-21: + +* Unescaped newlines are no longer allowed in character constants or + string literals. They were never portable, and GCC 3.4.0 has + dropped support for them. Better diagnostics are now generated if + forget a closing quote. + +* NUL bytes are no longer allowed in Bison string literals, unfortunately. + +* %token numbers can now be hexadecimal integers, e.g., `%token FOO 0x12d'. + This is a GNU extension. + +* A new directive "%expect-rr N" specifies the expected number of + reduce/reduce conflicts in GLR parsers. + +* Experimental %destructor support has been added to lalr1.cc. + +Changes in version 1.875c, 2003-08-25: + + (Just bug fixes.) + +Changes in version 1.875b, 2003-06-17: + +* GLR grammars now support locations. + +* Semicolon changes: + - Semicolons are now allowed before "|" in grammar rules, as POSIX requires. + - Stray semicolons are no longer allowed at the start of a grammar. + - Semicolons are now required after in-grammar declarations. + +Changes in version 1.875a, 2003-02-01: + +* For now, %expect-count violations are now just warnings, not errors. + This is for compatibility with Bison 1.75 and earlier (when there are reduce/reduce conflicts) and with Bison 1.30 and earlier (when there - are too many or too few shift/reduce conflicts). + are too many or too few shift/reduce conflicts). However, in future + versions of Bison we plan to improve the %expect machinery so that + these violations will become errors again. * New configure option --disable-yacc, to disable installation of the yacc command and -ly library introduced in 1.875 for POSIX conformance. @@ -256,8 +297,8 @@ Changes in version 1.50, 2002-10-04: 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 @@ -538,7 +579,7 @@ End: ----- -Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 +Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler.