tests: diff -u is not portable

[bison.git] / doc / bison.texi

diff --git a/doc/bison.texi b/doc/bison.texi
index b8a1aa6d5bfe4aa51509bf3e0e3878d58a526955..ba18d9a9d32ff700b1d2e9c47ce757b8dd194531 100644 (file)
--- a/doc/bison.texi
+++ b/doc/bison.texi
@@ -5124,6 +5124,23 @@ Values, ,Semantic Values of Tokens}.
 If you have declared @code{%code requires} or @code{%code provides}, the output
 header also contains their code.
 @xref{%code Summary}.
+
+@cindex Header guard
+The generated header is protected against multiple inclusions with a C
+preprocessor guard: @samp{YY_@var{PREFIX}_@var{FILE}_INCLUDED}, where
+@var{PREFIX} and @var{FILE} are the prefix (@pxref{Multiple Parsers,
+,Multiple Parsers in the Same Program}) and generated file name turned
+uppercase, with each series of non alphanumerical characters converted to a
+single underscore.
+
+For instance with @samp{%define api.prefix "calc"} and @samp{%defines
+"lib/parse.h"}, the header will be guarded as follows.
+@example
+#ifndef YY_CALC_LIB_PARSE_H_INCLUDED
+# define YY_CALC_LIB_PARSE_H_INCLUDED
+...
+#endif /* ! YY_CALC_LIB_PARSE_H_INCLUDED */
+@end example
 @end deffn
 
 @deffn {Directive} %defines @var{defines-file}
@@ -9055,13 +9072,23 @@ separated list of @var{things} among:
 Description of the grammar, conflicts (resolved and unresolved), and
 parser's automaton.
 
+@item itemset
+Implies @code{state} and augments the description of the automaton with
+the full set of items for each state, instead of its core only.
+
 @item lookahead
 Implies @code{state} and augments the description of the automaton with
 each rule's lookahead set.
 
-@item itemset
-Implies @code{state} and augments the description of the automaton with
-the full set of items for each state, instead of its core only.
+@item solved
+Implies @code{state}.  Explain how conflicts were solved thanks to
+precedence and associativity directives.
+
+@item all
+Enable all the items.
+
+@item none
+Do not generate the report.
 @end table
 
 @item --report-file=@var{file}