doc: %initial-action to initialize yylloc.

	Reported by Bill Allombert.
	* doc/bison.texinfo: Set fill-column to 76.
	(Location Type): Document the use of %initial-action to initialize
	yylloc.

(cherry picked from commit d59e456dbf5d9747e2fe0c0539f2ec670ce6f9c4)

1 files changed, 9 insertions, 2 deletions

diff --git a/doc/bison.texinfo b/doc/bison.texinfo
index 3c63a19a..f7999301 100644
--- a/doc/bison.texinfo
+++ b/doc/bison.texinfo
@@ -3804,8 +3804,11 @@ typedef struct YYLTYPE
 @} YYLTYPE;
 @end example
 
-At the beginning of the parsing, Bison initializes all these fields to 1
-for @code{yylloc}.
+When @code{YYLTYPE} is not defined, at the beginning of the parsing, Bison
+initializes all these fields to 1 for @code{yylloc}.  To initialize
+@code{yylloc} with a custom location type (or to chose a different
+initialization), use the @code{%initial-action} directive.  @xref{Initial
+Action Decl, , Performing Actions before Parsing}.
 
 @node Actions and Locations
 @subsection Actions and Locations
@@ -10555,6 +10558,10 @@ grammatically indivisible.  The piece of text it represents is a token.
 
 @bye
 
+@c Local Variables:
+@c fill-column: 76
+@c End:
+
 @c LocalWords: texinfo setfilename settitle setchapternewpage finalout
 @c LocalWords: ifinfo smallbook shorttitlepage titlepage GPL FIXME iftex
 @c LocalWords: akim fn cp syncodeindex vr tp synindex dircategory direntry