1 files changed, 9 insertions, 3 deletions
diff --git a/WebCore/rendering/RenderRubyRun.cpp b/WebCore/rendering/RenderRubyRun.cpp
index d48646b..a83a3e2 100644
--- a/WebCore/rendering/RenderRubyRun.cpp
+++ b/WebCore/rendering/RenderRubyRun.cpp
@@ -30,7 +30,6 @@
 
 #include "config.h"
 
-#if ENABLE(RUBY)
 #include "RenderRubyRun.h"
 
 #include "RenderRubyBase.h"
@@ -221,10 +220,17 @@ RenderRubyRun* RenderRubyRun::staticCreateRubyRun(const RenderObject* parentRuby
     RefPtr<RenderStyle> newStyle = RenderStyle::create();
     newStyle->inheritFrom(parentRuby->style());
     newStyle->setDisplay(INLINE_BLOCK);
+    if (parentRuby->style()->isFlippedLinesWritingMode()) {
+        // Ruby text is always in the line direction, so invert our block flow relative to the parent to
+        // ensure that the Ruby ends up on the correct side.
+        if (parentRuby->style()->isHorizontalWritingMode())
+            newStyle->setWritingMode(TopToBottomWritingMode);
+        else
+            newStyle->setWritingMode(RightToLeftWritingMode);
+    }
+
     rr->setStyle(newStyle.release());
     return rr;
 }
 
 } // namespace WebCore
-
-#endif // ENABLE(RUBY)