doc: improve html and pdf rendering

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

diff --git a/src/scan-skel.l b/src/scan-skel.l
index a0d9c9e993f531431eaf8bfa168b0bbe2774686b..22756267c6aeba6ad02404d519b1a605260e6bf1 100644 (file)
--- a/src/scan-skel.l
+++ b/src/scan-skel.l
@@ -1,6 +1,6 @@
 /* Scan Bison Skeletons.                                       -*- C -*-
 
-   Copyright (C) 2001-2012 Free Software Foundation, Inc.
+   Copyright (C) 2001-2015 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -72,7 +72,7 @@ static void fail_for_invalid_at (char const *at);
 "@@" fputc ('@', yyout);
 "@{" fputc ('[', yyout);
 "@}" fputc (']', yyout);
-"@`" continue;  /* Used by b4_cat in ../data/bison.m4.  */
+"@'" continue;  /* Used by b4_cat in ../data/bison.m4.  */
 @\n  continue;
 
 "@oline@"  fprintf (yyout, "%d", out_lineno + 1);
@@ -83,7 +83,7 @@ static void fail_for_invalid_at (char const *at);
 "@output("      at_init (&argc, argv, &at_ptr, &at_output);
 
   /* 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;
 
@@ -103,7 +103,7 @@ static void fail_for_invalid_at (char const *at);
   "@@"   obstack_1grow (&obstack_for_string, '@');
   "@{"   obstack_1grow (&obstack_for_string, '[');
   "@}"   obstack_1grow (&obstack_for_string, ']');
-  "@`"   continue; /* For starting an argument that begins with whitespace. */
+  "@'"   continue; /* For starting an argument that begins with whitespace. */
   @\n    continue;
 
   @[,)] {
@@ -183,14 +183,16 @@ flag (const char *arg)
   /* compare with values issued from b4_error */
   if (STREQ (arg, "complain"))
     return complaint;
+  else if (STREQ (arg, "deprecated"))
+    return Wdeprecated;
   else if (STREQ (arg, "fatal"))
     return fatal;
   else if (STREQ (arg, "note"))
-    return silent | complaint;
+    return silent | complaint | no_caret;
   else if (STREQ (arg, "warn"))
     return Wother;
   else
-    aver (false);
+    abort ();
 }
 
 static void
@@ -242,8 +244,9 @@ at_output (int argc, char *argv[], char **out_namep, int *out_linenop)
       xfclose (yyout);
     }
   *out_namep = xstrdup (argv[1]);
-  output_file_name_check (out_namep);
-  yyout = xfopen (*out_namep, "w");
+  output_file_name_check (out_namep, true);
+  /* If there were errors, do not generate the output.  */
+  yyout = xfopen (complaint_status ? "/dev/null" : *out_namep, "w");
   *out_linenop = 1;
 }