When the input is in compose mode, doing a select all and delete/backspace throws exception.

Steps:
------
1) Copy im jars under jre/lib/im to jre/lib/ext
2) Launch Notepad demo
3) Select Devanagari input method
4) Enter a few characters for which compose will be shown below the current line (Eg: "f")
5) Do select all
6) Press backspace

Throws IllegalArgumentException.. Screenshot of UI attached..

C:\>java -jar c:\j2sdk1.6.0\demo\jfc\Notepad\Notepad.jar
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Zero
length iterator passed to TextLayout constructor.
        at java.awt.font.TextLayout.<init>(TextLayout.java:494)
        at com.sun.java.swing.SwingUtilities2.drawString(SwingUtilities2.java:82
6)
        at javax.swing.text.Utilities.paintComposedText(Utilities.java:867)
        at javax.swing.text.GlyphView.paint(GlyphView.java:386)
        at javax.swing.text.BoxView.paintChild(BoxView.java:144)
        at javax.swing.text.BoxView.paint(BoxView.java:407)
        at javax.swing.text.BoxView.paintChild(BoxView.java:144)
        at javax.swing.text.BoxView.paint(BoxView.java:407)
        at javax.swing.text.ParagraphView.paint(ParagraphView.java:582)
        at javax.swing.text.BoxView.paintChild(BoxView.java:144)
        at javax.swing.text.BoxView.paint(BoxView.java:407)
        at javax.swing.text.BoxView.paintChild(BoxView.java:144)
        at javax.swing.text.BoxView.paint(BoxView.java:407)
        at javax.swing.plaf.basic.BasicTextUI$RootView.paint(BasicTextUI.java:13
58)
        at javax.swing.plaf.basic.BasicTextUI.paintSafely(BasicTextUI.java:649)
        at javax.swing.plaf.basic.BasicTextUI.paint(BasicTextUI.java:791)
        at javax.swing.plaf.basic.BasicTextUI.update(BasicTextUI.java:770)
        at javax.swing.JComponent.paintComponent(JComponent.java:710)
        at javax.swing.JComponent.paint(JComponent.java:975)
        at javax.swing.JComponent.paintToOffscreen(JComponent.java:5077)
        at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManag
er.java:279)
        at javax.swing.RepaintManager.paint(RepaintManager.java:1079)
        at javax.swing.JComponent._paintImmediately(JComponent.java:5025)
        at javax.swing.JComponent.paintImmediately(JComponent.java:4843)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:688)

        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:644)

        at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:6
24)
        at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(System
EventQueueUtilities.java:128)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)