Bug 28831 Displays ligature for fi & fl
Eclipse M4 The Eclipse editor displays ligatures for 'fi' & 'fl' instead of the specific characters. This results a) in strange look and b) in the column indicator being off by one for each occurence. NB: While this might be nice for proprtional fonts, it's no good idea for fixed width fonts.
bundles/org.eclipse.ui.win32/src/org/eclipse/ui/internal/editorsupport/win32/OleEditor.java
* editors and set any required flags
	 */
	private void sourceChanged(IFile newFile) {
		FileEditorInput newInput = new FileEditorInput(newFile);
		setInput(newInput);
		setResource(newFile);
		sourceChanged = true;
		setTitle(newInput.getName());
	}
	/* 
	 * See IEditorPart.isSaveOnCloseNeeded() 
	 */
	public boolean isSaveOnCloseNeeded() {
		return !sourceDeleted && super.isSaveOnCloseNeeded();
	}
	/**
	 * Posts the update code "behind" the running operation.
	 *
	 * @param runnable the update code
	 */
	private void update(Runnable runnable) {
		IWorkbench workbench = PlatformUI.getWorkbench();
		IWorkbenchWindow[] windows = workbench.getWorkbenchWindows();
		if (windows != null && windows.length > 0) {
			Display display = windows[0].getShell().getDisplay();
			display.asyncExec(runnable);
		} else
			runnable.run();
	}
}