X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/87b0a3759788d4f7e439e1aeb02661d1f7df6d01..4b7a4c1b1c8c18e9ad2517c117442b9b7d7e671a:/src/scan-skel.l?ds=sidebyside

diff --git a/src/scan-skel.l b/src/scan-skel.l
index f3fa1a61..8b3c5933 100644
--- a/src/scan-skel.l
+++ b/src/scan-skel.l
@@ -1,26 +1,24 @@
 /* Scan Bison Skeletons.                                       -*- C -*-
 
-   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
-   Foundation, Inc.
+   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
-   Bison is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-   Bison is distributed in the hope that it will be useful, but
-   WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with Bison; see the file COPYING.  If not, write to the Free
-   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-   02110-1301, USA.  */
+   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"
 
 %{
@@ -72,9 +70,11 @@ 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);
@@ -89,7 +89,7 @@ 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;
 
@@ -110,6 +110,7 @@ static void fail_for_invalid_at (char const *at);
   "@}" { obstack_1grow (&obstack_for_string, ']'); }
   "@`" /* Emtpy.  Useful for starting an argument
           that begins with whitespace. */
+  @\n  /* Empty.  */
 
   @[,)] {
     if (at_directive_argc >= AT_DIRECTIVE_ARGC_MAX)