doc: document experimental features better.

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

diff --git a/src/scan-gram.l b/src/scan-gram.l
index f0f8c2796b084d19dbde8481db4d239f3bd994e4..2f264f5f14e1860692a7345ec0b8da14e45d4be7 100644 (file)
--- a/src/scan-gram.l
+++ b/src/scan-gram.l
@@ -1,7 +1,6 @@
 /* Bison Grammar Scanner                             -*- C -*-
 
-   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free
-   Software Foundation, Inc.
+   Copyright (C) 2002-2011 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -104,8 +103,8 @@ static void unexpected_newline (boundary, char const *);
  /* Bracketed identifiers support. */
 %x SC_BRACKETED_ID SC_RETURN_BRACKETED_ID
 
-letter   [-.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_]
-id       {letter}({letter}|[0-9])*
+letter   [.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_]
+id       {letter}({letter}|[-0-9])*
 directive %{id}
 int      [0-9]+
 
@@ -561,7 +560,7 @@ splice       (\\[ \f\t\v]*\n)*
   \\(.|\n)     {
     char const *p = yytext + 1;
     /* Quote only if escaping won't make the character visible.  */
-    if (isspace (*p) && isprint (*p))
+    if (isspace ((unsigned char) *p) && isprint ((unsigned char) *p))
       p = quote (p);
     else
       p = quotearg_style_mem (escape_quoting_style, p, 1);