* src/print_graph.c (print_actions): CPP out useless code.
[bison.git] / NEWS
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1Bison News
2----------
3
7333d403 4Changes in version 1.28c:
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6* the input and the output files has automatically a similar extension.
7
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8* Russian translation added.
9
10* NLS support updated; should hopefully be less troublesome.
11
12* Added the old Bison reference card.
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13
14* Added `--locations' and `%locations'.
6deb4447 15
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16* Added `-S' and `--skeleton'.
17
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18* `%raw', `-r', `--raw' is disabled.
19
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20* Special characters are escaped when output. This solves the problems
21 of the #line lines with path names including backslashes.
22
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23* New directives.
24 `%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose', and
25 `%debug'.
f87a2205 26\f
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27Changes in version 1.28:
28
29* Should compile better now with K&R compilers.
30
31* Added NLS.
32
33* Fixed a problem with escaping the double quote character.
34
35* There is now a FAQ.
36\f
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37Changes in version 1.27:
38
39* The make rule which prevented bison.simple from being created on
40 some systems has been fixed.
41\f
42Changes in version 1.26:
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43
44* Bison now uses automake.
45
46* New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
47
48* Token numbers now start at 257 as previously documented, not 258.
49
50* Bison honors the TMPDIR environment variable.
51
52* A couple of buffer overruns have been fixed.
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53
54* Problems when closing files should now be reported.
55
56* Generated parsers should now work even on operating systems which do
57 not provide alloca().
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5c31c3c2 59Changes in version 1.25:
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60
61* Errors in the input grammar are not fatal; Bison keeps reading
62the grammar file, and reports all the errors found in it.
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64* Tokens can now be specified as multiple-character strings: for
65example, you could use "<=" for a token which looks like <=, instead
66of chosing a name like LESSEQ.
67
68* The %token_table declaration says to write a table of tokens (names
69and numbers) into the parser file. The yylex function can use this
70table to recognize multiple-character string tokens, or for other
71purposes.
72
73* The %no_lines declaration says not to generate any #line preprocessor
74directives in the parser file.
75
76* The %raw declaration says to use internal Bison token numbers, not
77Yacc-compatible token numbers, when token names are defined as macros.
78
79* The --no-parser option produces the parser tables without including
80the parser engine; a project can now use its own parser engine.
81The actions go into a separate file called NAME.act, in the form of
82a switch statement body.
83\f
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84Changes in version 1.23:
85
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86The user can define YYPARSE_PARAM as the name of an argument to be
87passed into yyparse. The argument should have type void *. It should
88actually point to an object. Grammar actions can access the variable
89by casting it to the proper pointer type.
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6780ca7a 91Line numbers in output file corrected.
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92\f
93Changes in version 1.22:
94
95--help option added.
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96\f
97Changes in version 1.20:
98
99Output file does not redefine const for C++.