Re: YYRECOVERING nit

[Paul Eggert]

Thanks for reporting that.  That's more than a nit, since glr.c and
yacc.c are inadvertantly incompatible here (perhaps because of the
documentation bug?).  I installed this:

2006-05-30  Paul Eggert  <address@hidden>

        * data/glr.c (YYRECOVERING): Define to be a function-like macro
        with no arguments, not as an object-like macro.  This is for
        compatibility with data/yacc.c.  Problem reported by John P. Hartmann in
        <http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00059.html>.
        * doc/bison.texinfo (Action Features, Error Recovery, Table of Symbols):
        Document this.

--- data/glr.c  21 May 2006 08:11:30 -0000      1.177
+++ data/glr.c  30 May 2006 23:37:20 -0000
@@ -906,7 +906,7 @@ yyuserAction (yyRuleNum yyn, int yyrhsle
 # undef YYERROR
 # define YYERROR return yyerrok, yyerr
 # undef YYRECOVERING
-# define YYRECOVERING (yystackp->yyerrState != 0)
+# define YYRECOVERING() (yystackp->yyerrState != 0)
 # undef yyclearin
 # define yyclearin (yychar = YYEMPTY)
 # undef YYFILL
--- doc/bison.texinfo   30 May 2006 06:07:06 -0000      1.190
+++ doc/bison.texinfo   30 May 2006 23:37:20 -0000
@@ -4892,8 +4892,9 @@ the @samp{YYERROR;} statement.  @xref{Er
 @end deffn
 
 @deffn {Macro} YYRECOVERING
-This macro stands for an expression that has the value 1 when the parser
-is recovering from a syntax error, and 0 the rest of the time.
address@hidden YYRECOVERING
+The expression @code{YYRECOVERING ()} yields 1 when the parser
+is recovering from a syntax error, and 0 otherwise.
 @xref{Error Recovery}.
 @end deffn
 
@@ -6003,10 +6004,10 @@ probably correct.  The previous look-ahe
 with @samp{yyclearin;}.
 
 @vindex YYRECOVERING
-The macro @code{YYRECOVERING} stands for an expression that has the
-value 1 when the parser is recovering from a syntax error, and 0 the
-rest of the time.  A value of 1 indicates that error messages are
-currently suppressed for new syntax errors.
+The expression @code{YYRECOVERING ()} yields 1 when the parser
+is recovering from a syntax error, and 0 otherwise.
+Syntax error diagnostics are suppressed while recovering from a syntax
+error.
 
 @node Context Dependency
 @chapter Handling Context Dependencies
@@ -8469,8 +8470,9 @@ Conventions for Pure Parsers}.
 @end deffn
 
 @deffn {Macro} YYRECOVERING
-Macro whose value indicates whether the parser is recovering from a
-syntax error.  @xref{Action Features, ,Special Features for Use in Actions}.
+The expression @code{YYRECOVERING ()} yields 1 when the parser
+is recovering from a syntax error, and 0 otherwise.
address@hidden Features, ,Special Features for Use in Actions}.
 @end deffn
 
 @deffn {Macro} YYSTACK_USE_ALLOCA