From f5e4e4eb0f29909f6676e78793f737fd49a684bc Mon Sep 17 00:00:00 2001
From: Pere Pujal i Carabantes <perepujal@users.sourceforge.net>
Date: Mon, 9 Nov 2009 21:51:45 +0000
Subject: [PATCH] Fixing a bug that caused the deletion of a label when
 a)writing the label  b) draw things that caused that cur_undo matched newly
 label->save_undoid after cycling around NUM_UNDO_BUFS c)click on undo.

---
 src/tuxpaint.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/tuxpaint.c b/src/tuxpaint.c
index 1e83be0f1..f7c831b25 100644
--- a/src/tuxpaint.c
+++ b/src/tuxpaint.c
@@ -18304,7 +18304,11 @@ void rec_undo_label(void)
       have_to_rec_label_node = FALSE;
     }
   else
-    text_undo[cur_undo] = 0;
+      {
+          text_undo[cur_undo] = 0;
+          if (current_label_node != NULL && current_label_node->save_undoid == (cur_undo + 1) % NUM_UNDO_BUFS)
+              current_label_node->save_undoid = 255;
+      }
 }
 
 void do_undo_label_node()