trigraph quoting patch for Bison lib/quotearg.c

[Paul Eggert]

I installed the following patch to work around an obvious glitch in
the trigraph quoting code.  At some point I'll merge this stuff
back into gnulib.

2002-11-02  Paul Eggert  <address@hidden>

        * lib/quotearg.c (quotearg_buffer_restyled): Fix off-by-two
        bug in trigraph handling.

Index: quotearg.c
===================================================================
RCS file: /cvsroot/bison/bison/lib/quotearg.c,v
retrieving revision 1.6
retrieving revision 1.7
diff -p -u -r1.6 -r1.7
--- quotearg.c  12 Aug 2002 14:10:23 -0000      1.6
+++ quotearg.c  3 Nov 2002 07:03:53 -0000       1.7
@@ -330,8 +330,8 @@ quotearg_buffer_restyled (char *buffer, 
                  case '<': case '=': case '>':
                    /* Escape the second '?' in what would otherwise be
                       a trigraph.  */
-                   i += 2;
                    c = arg[i + 2];
+                   i += 2;
                    STORE ('?');
                    STORE ('\\');
                    STORE ('?');