gdk_selection.c:sanitize_ctext is broken in 1.2.9

[Vlad Harchev <hvv hippo ru>]

 Hi,

 Users say that there are problems with russian strings in window titles under
XFree-4.0.2 and gtk-1.2.9 (I don't have XF-4.0.2 so I can't describe them) - I
was told that it's somehow severely corrupted. I guess same problems will
appear for any other non-latin1 locale.
 The problem is in newly-introduced sanitize_ctext function. 

 Here is a hackish patch that fixes the problem for russian (it's not mine),
but it has (as Aleksey Novodvorsky <aen logic ru>, the author of the patch, 
says) a problem of not filtering out some escape sequences that are
introduced by some very old XFree servers:

diff -ur gtk+-1.2.9.orig/gdk/gdkselection.c gtk+-1.2.9/gdk/gdkselection.c
--- gtk+-1.2.9.orig/gdk/gdkselection.c  Tue Feb 20 19:44:22 2001
+++ gtk+-1.2.9/gdk/gdkselection.c       Sun Mar  4 15:26:05 2001
@@ -222,7 +222,9 @@
       else if (c == '\n' || c == '\t' || c == 27 /* ESC */ ||
               (c >= 32 && c <= 127) || /* GL */
               c == 155 /* CONTROL SEQUENCE INTRODUCER */ ||
-              (c >= 160 && c <= 255)) /* GR */
+              (c >= 160 && c <= 255) /* GR */ ||
+              (c >= 128 && c <= 150) /* charset length  */ ||
+              c == 2 /* end of non-standard encoding sequence */)
        {
          result[out_length++] = c;
        }

 I have been told that complete description of escape sequences supported by
XFree is only available in russian though. Ivan Pascal <pascal info tsu ru> is
the author of that documentation, and I hope that he will help to explain how
to rewrite sanize_ctext in order to be correct. 

 It would be nice if this issue was fixed before 1.2.10 release..

PS: Ivan, could you fix that function (or gdkselection.c) yourself? 

 Best regards,
  -Vlad