From 313bc1e9827df7a1598b09049746f4c3eb5ff615 Mon Sep 17 00:00:00 2001
From: Eric Mader <emader@svn.icu-project.org>
Date: Fri, 26 Oct 2007 02:27:04 +0000
Subject: [PATCH] ICU-6007 Don't check for Thai presentation forms if the font
 doesn't contain Thai!

X-SVN-Rev: 22857
---
 icu4c/source/layout/ThaiLayoutEngine.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/icu4c/source/layout/ThaiLayoutEngine.cpp b/icu4c/source/layout/ThaiLayoutEngine.cpp
index 1df56d7fb2..b9cbdb808f 100644
--- a/icu4c/source/layout/ThaiLayoutEngine.cpp
+++ b/icu4c/source/layout/ThaiLayoutEngine.cpp
@@ -23,7 +23,10 @@ ThaiLayoutEngine::ThaiLayoutEngine(const LEFontInstance *fontInstance, le_int32
     fErrorChar = 0x25CC;
 
     // Figure out which presentation forms the font uses
-    if (fontInstance->canDisplay(0x0E64)) {
+    if (! fontInstance->canDisplay(0x0E01)) {
+        // No Thai in font; don't use presentation forms.
+        fGlyphSet = 3;
+    } else if (fontInstance->canDisplay(0x0E64)) {
         // WorldType uses reserved space in Thai block
         fGlyphSet = 0;
     } else if (fontInstance->canDisplay(0xF701)) {