[bison.git] / NEWS

Bison News
----------

Change in version 1.26:

* Bison now uses automake.

* New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.

* Token numbers now start at 257 as previously documented, not 258.

* Bison honors the TMPDIR environment variable.

* A couple of buffer overruns have been fixed.
\f
Change in version 1.25:

* Errors in the input grammar are not fatal; Bison keeps reading
the grammar file, and reports all the errors found in it.
		
* Tokens can now be specified as multiple-character strings: for
example, you could use "<=" for a token which looks like <=, instead
of chosing a name like LESSEQ.

* The %token_table declaration says to write a table of tokens (names
and numbers) into the parser file.  The yylex function can use this
table to recognize multiple-character string tokens, or for other
purposes.

* The %no_lines declaration says not to generate any #line preprocessor
directives in the parser file.

* The %raw declaration says to use internal Bison token numbers, not
Yacc-compatible token numbers, when token names are defined as macros.

* The --no-parser option produces the parser tables without including
the parser engine; a project can now use its own parser engine.
The actions go into a separate file called NAME.act, in the form of
a switch statement body.
\f
Changes in version 1.23:

The user can define YYPARSE_PARAM as the name of an argument to be
passed into yyparse.  The argument should have type void *.  It should
actually point to an object.  Grammar actions can access the variable
by casting it to the proper pointer type.

Line numbers in output file corrected.
\f
Changes in version 1.22:

--help option added.
\f
Changes in version 1.20:

Output file does not redefine const for C++.
Commit	Line	Data
6780ca7a DM	1	Bison News
	2	----------
	3
4be07551 JT	4	Change in version 1.26:
	5
	6	* Bison now uses automake.
	7
	8	* New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
	9
	10	* Token numbers now start at 257 as previously documented, not 258.
	11
	12	* Bison honors the TMPDIR environment variable.
	13
	14	* A couple of buffer overruns have been fixed.
	15	\f
df8878c5 RS	16	Change in version 1.25:
	17
	18	* Errors in the input grammar are not fatal; Bison keeps reading
	19	the grammar file, and reports all the errors found in it.
	20
	21	* Tokens can now be specified as multiple-character strings: for
	22	example, you could use "<=" for a token which looks like <=, instead
	23	of chosing a name like LESSEQ.
	24
	25	* The %token_table declaration says to write a table of tokens (names
	26	and numbers) into the parser file. The yylex function can use this
	27	table to recognize multiple-character string tokens, or for other
	28	purposes.
	29
	30	* The %no_lines declaration says not to generate any #line preprocessor
	31	directives in the parser file.
	32
	33	* The %raw declaration says to use internal Bison token numbers, not
	34	Yacc-compatible token numbers, when token names are defined as macros.
	35
	36	* The --no-parser option produces the parser tables without including
	37	the parser engine; a project can now use its own parser engine.
	38	The actions go into a separate file called NAME.act, in the form of
	39	a switch statement body.
	40	\f
6780ca7a DM	41	Changes in version 1.23:
6780ca7a DM	42
4d019228 DM	43	The user can define YYPARSE_PARAM as the name of an argument to be
	44	passed into yyparse. The argument should have type void *. It should
	45	actually point to an object. Grammar actions can access the variable
	46	by casting it to the proper pointer type.
6780ca7a	47
6780ca7a	48	Line numbers in output file corrected.
6780ca7a DM	49	\f
	50	Changes in version 1.22:
	51
	52	--help option added.
6780ca7a DM	53	\f
	54	Changes in version 1.20:
	55
	56	Output file does not redefine const for C++.