portability: fix spawning on at least FreeBSD 8 and FreeBSD 9.

[bison.git] / src / scan-skel.l

diff --git a/src/scan-skel.l b/src/scan-skel.l
index 963478b242705d53e1e98bb35c1fabdd099c41b9..ab334eb5be64522799d2b0eec4e9ef47f6942a36 100644 (file)
--- a/src/scan-skel.l
+++ b/src/scan-skel.l
@@ -1,7 +1,6 @@
 /* Scan Bison Skeletons.                                       -*- C -*-
 
-   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
-   Foundation, Inc.
+   Copyright (C) 2001-2010 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -18,7 +17,7 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-%option nodefault noyywrap nounput never-interactive debug
+%option nodefault noyywrap noinput nounput never-interactive debug
 %option prefix="skel_" outfile="lex.yy.c"
 
 %{
@@ -28,16 +27,16 @@
 #define skel_wrap() 1
 
 #define FLEX_PREFIX(Id) skel_ ## Id
-#include "flex-scanner.h"
+#include <src/flex-scanner.h>
 
 #include <dirname.h>
 #include <error.h>
 #include <quotearg.h>
 
-#include "complain.h"
-#include "getargs.h"
-#include "files.h"
-#include "scan-skel.h"
+#include <src/complain.h>
+#include <src/getargs.h>
+#include <src/files.h>
+#include <src/scan-skel.h>
 
 #define YY_DECL static int skel_lex (void)
 YY_DECL;
@@ -70,9 +69,11 @@ static void fail_for_invalid_at (char const *at);
   char *at_directive_argv[AT_DIRECTIVE_ARGC_MAX];
 %}
 
-"@@"      fputc ('@', yyout);
-"@{"      fputc ('[', yyout);
-"@}"      fputc (']', yyout);
+"@@" fputc ('@', yyout);
+"@{" fputc ('[', yyout);
+"@}" fputc (']', yyout);
+"@`" /* Emtpy.  Used by b4_cat in ../data/bison.m4.  */
+@\n  /* Likewise.  */
 
 "@oline@"  fprintf (yyout, "%d", out_lineno + 1);
 "@ofile@"  QPUTS (outname);
@@ -87,7 +88,7 @@ static void fail_for_invalid_at (char const *at);
 }
 
   /* This pattern must not match more than the previous @ patterns. */
-@[^@{}(\n]* fail_for_invalid_at (yytext);
+@[^@{}`(\n]* fail_for_invalid_at (yytext);
 \n        out_lineno++; ECHO;
 [^@\n]+           ECHO;
 
@@ -106,8 +107,9 @@ static void fail_for_invalid_at (char const *at);
   "@@" { obstack_1grow (&obstack_for_string, '@'); }
   "@{" { obstack_1grow (&obstack_for_string, '['); }
   "@}" { obstack_1grow (&obstack_for_string, ']'); }
-  "@`" /* Emtpy.  Useful for starting an argument
+  "@`" /* Empty.  Useful for starting an argument
           that begins with whitespace. */
+  @\n  /* Empty.  */
 
   @[,)] {
     if (at_directive_argc >= AT_DIRECTIVE_ARGC_MAX)
@@ -172,10 +174,10 @@ skel_scanner_free (void)
   yylex_destroy ();
 }
 
-static
-void at_directive_perform (int at_directive_argc,
-                           char *at_directive_argv[],
-                           char **outnamep, int *out_linenop)
+static void
+at_directive_perform (int at_directive_argc,
+                      char *at_directive_argv[],
+                      char **outnamep, int *out_linenop)
 {
   if (0 == strcmp (at_directive_argv[0], "@basename"))
     {
@@ -274,7 +276,7 @@ void at_directive_perform (int at_directive_argc,
           xfclose (yyout);
         }
       *outnamep = xstrdup (at_directive_argv[1]);
-      output_file_name_check (*outnamep);
+      output_file_name_check (outnamep);
       yyout = xfopen (*outnamep, "w");
       *out_linenop = 1;
     }