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doc: formatting changes

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* doc/bison.texi: No changes in the output.
This commit is contained in:
Akim Demaille
2018-09-13 08:31:16 +02:00
parent 9ff76cdda8
commit ce99bc67b8
1 changed files with 17 additions and 19 deletions
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doc/bison.texi
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@@ -1175,14 +1175,13 @@ action in a GLR parser.
@cindex GLR parsers and @code{yylval} @cindex GLR parsers and @code{yylval}
@vindex yylloc @vindex yylloc
@cindex GLR parsers and @code{yylloc} @cindex GLR parsers and @code{yylloc}
In any semantic action, you can examine @code{yychar} to determine the type of In any semantic action, you can examine @code{yychar} to determine the type
the lookahead token present at the time of the associated reduction. of the lookahead token present at the time of the associated reduction.
After checking that @code{yychar} is not set to @code{YYEMPTY} or @code{YYEOF}, After checking that @code{yychar} is not set to @code{YYEMPTY} or
you can then examine @code{yylval} and @code{yylloc} to determine the @code{YYEOF}, you can then examine @code{yylval} and @code{yylloc} to
lookahead token's semantic value and location, if any. determine the lookahead token's semantic value and location, if any. In a
In a nondeferred semantic action, you can also modify any of these variables to nondeferred semantic action, you can also modify any of these variables to
influence syntax analysis. influence syntax analysis. @xref{Lookahead, ,Lookahead Tokens}.
@xref{Lookahead, ,Lookahead Tokens}.
@findex yyclearin @findex yyclearin
@cindex GLR parsers and @code{yyclearin} @cindex GLR parsers and @code{yyclearin}
@@ -10423,16 +10422,15 @@ the corresponding short option and directive.
@node Yacc Library @node Yacc Library
@section Yacc Library @section Yacc Library
The Yacc library contains default implementations of the The Yacc library contains default implementations of the @code{yyerror} and
@code{yyerror} and @code{main} functions. These default @code{main} functions. These default implementations are normally not
implementations are normally not useful, but POSIX requires useful, but POSIX requires them. To use the Yacc library, link your program
them. To use the Yacc library, link your program with the with the @option{-ly} option. Note that Bison's implementation of the Yacc
@option{-ly} option. Note that Bison's implementation of the Yacc library is distributed under the terms of the GNU General Public License
library is distributed under the terms of the GNU General (@pxref{Copying}).
Public License (@pxref{Copying}).
If you use the Yacc library's @code{yyerror} function, you should If you use the Yacc library's @code{yyerror} function, you should declare
declare @code{yyerror} as follows: @code{yyerror} as follows:
@example @example
int yyerror (char const *); int yyerror (char const *);
@@ -12572,8 +12570,8 @@ Is Bison secure? Does it conform to POSIX?
If you're looking for a guarantee or certification, we don't provide it. If you're looking for a guarantee or certification, we don't provide it.
However, Bison is intended to be a reliable program that conforms to the However, Bison is intended to be a reliable program that conforms to the
POSIX specification for Yacc. If you run into problems, POSIX specification for Yacc. If you run into problems, please send us a
please send us a bug report. bug report.
@node I can't build Bison @node I can't build Bison
@section I can't build Bison @section I can't build Bison