Bug 66923 [typing]Can delete word (Ctrl-Backspace) on read only file
When you open read-only java file, all editing functions are disabled except deleting with Ctrl-Backspace and Ctrl-Del, then it is imposible to save this file. On simple text file it works ok - it blocks all edditing functions (including Ctrl-Backspace). I am using build 200406111814
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
return null;
			
		int size= segmentation.size();
		int[] segments= new int[size * 2 + 1];
		
		int j= 0;
		for (int i= 0; i < size; i++) {
			ITypedRegion segment= (ITypedRegion) segmentation.get(i);
			
			if (i == 0)
				segments[j++]= 0;
				
			int offset= segment.getOffset() - lineOffset;
			if (offset > segments[j - 1])
				segments[j++]= offset;
				
			if (offset + segment.getLength() >= line.getLength())
				break;
				
			segments[j++]= offset + segment.getLength();
		}
		
		if (j < segments.length) {
			int[] result= new int[j];
			System.arraycopy(segments, 0, result, 0, j);
			segments= result;
		}
		
		return segments;
	}