Aric Stewart : usp10: Some unicode code points will force us into bidi mode .

[Alexandre Julliard]

Module: wine
Branch: master
Commit: fce22eadc1cfa6ced6f0f79a2b6a781c82a7916c
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=fce22eadc1cfa6ced6f0f79a2b6a781c82a7916c

Author: Aric Stewart <aric at codeweavers.com>
Date:   Sun Nov 20 21:04:13 2011 -0700

usp10: Some unicode code points will force us into bidi mode.

---

 dlls/usp10/usp10.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/dlls/usp10/usp10.c b/dlls/usp10/usp10.c
index ce4dbcd..06cde93 100644
--- a/dlls/usp10/usp10.c
+++ b/dlls/usp10/usp10.c
@@ -844,6 +844,7 @@ HRESULT WINAPI ScriptItemizeOpenType(const WCHAR *pwcInChars, int cInChars, int
     BOOL  new_run;
     WORD  last_indic = -1;
     WORD layoutRTL = 0;
+    BOOL forceLevels = FALSE;
 
     TRACE("%s,%d,%d,%p,%p,%p,%p\n", debugstr_wn(pwcInChars, cInChars), cInChars, cMaxItems, 
           psControl, psState, pItems, pcItems);
@@ -864,6 +865,11 @@ HRESULT WINAPI ScriptItemizeOpenType(const WCHAR *pwcInChars, int cInChars, int
             scripts[i] = last_indic;
         else if (is_indic(scripts[i]))
             last_indic = base_indic(scripts[i]);
+
+        /* Some unicode points (Zero Width Space U+200B -
+           Right-to-Left Mark U+200F) will force us into bidi mode */
+        if (!forceLevels && pwcInChars[i] >= 0x200B && pwcInChars[i] <= 0x200F)
+            forceLevels = TRUE;
     }
 
     for (i = 0; i < cInChars; i++)
@@ -902,7 +908,7 @@ HRESULT WINAPI ScriptItemizeOpenType(const WCHAR *pwcInChars, int cInChars, int
         for (i = 0; i < cInChars; i++)
             if (levels[i]!=levels[0])
                 break;
-        if (i >= cInChars && !odd(baselevel) && !odd(psState->uBidiLevel))
+        if (i >= cInChars && !odd(baselevel) && !odd(psState->uBidiLevel) && !forceLevels)
         {
             heap_free(levels);
             levels = NULL;