Bug 53010 Editor preferences do not take effect on open editors
I-20040224 Go to the Java > Editor > Syntax preference page. Change the keyword color to red. Press Ok. At this point, we use to see the preview update. Not on this build (problem #1). Press Ok, and close the pref dialog. The java editor that was already open did not update. I had to close it and reopen it for the colors to take effect (problem #2)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
} else
					range= reference.getSourceRange();
				
				if (range == null)
					return;
				
				int offset= range.getOffset();
				int length= range.getLength();
				
				if (offset < 0 || length < 0)
					return;
									
				setHighlightRange(offset, length, moveCursor);
				if (!moveCursor)
					return;
											
				offset= -1;
				length= -1;
				
				if (reference instanceof IMember) {
					range= ((IMember) reference).getNameRange();
					if (range != null) {
						offset= range.getOffset();
						length= range.getLength();
					}
				} else if (reference instanceof ILocalVariable) {
					range= ((ILocalVariable)reference).getNameRange();
					if (range != null) {
						offset= range.getOffset();
						length= range.getLength();