Aric Stewart : usp10: Correct issues with LTR logclust indexing after Multiple substitution.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 66736948475bf909cfb3bdfc9ffa428d61909f65
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=66736948475bf909cfb3bdfc9f...

Author: Aric Stewart 
Date:   Mon Dec  5 09:50:10 2011 -0600

usp10: Correct issues with LTR logclust indexing after Multiple substitution.

---

dlls/usp10/shape.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/dlls/usp10/shape.c b/dlls/usp10/shape.c
index 04f0ff4..2189b92 100644
--- a/dlls/usp10/shape.c
+++ b/dlls/usp10/shape.c
@@ -1360,9 +1360,13 @@ static void UpdateClusters(int nextIndex, int changeCount, int write_dir, int ch
         int replacing_glyph = -1;
         int changed = 0;

-
         if (changeCount > 0)
-            target_glyph = nextIndex - ((changeCount+1)*write_dir);
+        {
+            if (write_dir > 0)
+                target_glyph = nextIndex - changeCount;
+            else
+                target_glyph = nextIndex + (changeCount + 1);
+        }

seeking_glyph = target_glyph;