Bug 33629 Double-quote as character value broken in RC1
There is a series of related bugs under the category of it's really hard to enter a character value containing a double-quote character and when you try it strange things can happen. 1. Single-quote balancing seems not to work at all. When you type a single quote you get a single quote. 2. When you type the character sequence '" the result is '"" (!) 3. When you try to backspace over the extra unwanted " (either the first or the second) both are erased. The only way to get the desired result seems to be to copy and paste the " character. 4. If you try to cut and paste in the ", you can get in some weird mode where the editor thinks a string exists where there is none. I'm still trying to figure out the sequence that produced the following lines: if (c == ''' || c == '"') {" + "} (Leading tabs removed for sake of example.) I only know that the last two " characters were not typed. No doubt another illustration why editor modes are a bad idea.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/SmartBracesAutoEditStrategy.java
final String source= document.get(scanRegion.getOffset(), scanRegion.getLength());
		IScanner scanner= ToolFactory.createScanner(false, false, false, false);
		scanner.setSource(source.toCharArray());
		try {
			int id= scanner.getNextToken();
			while (id != ITerminalSymbols.TokenNameEOF && id != tokenId)
				id= scanner.getNextToken();
			if (id == ITerminalSymbols.TokenNameEOF)
				return null;
			int tokenOffset= scanner.getCurrentTokenStartPosition();
			int tokenLength= scanner.getCurrentTokenEndPosition() + 1 - tokenOffset; 
			return new Region(tokenOffset + scanRegion.getOffset(), tokenLength);
		} catch (InvalidInputException e) {
			return null;
		}
	}
	private void addReplace(IDocument document, DocumentCommand command, int offset, int length, String text) throws BadLocationException {
		command.addCommand(offset, length, text, fDocumentListener); 
		command.owner= fDocumentListener;
		command.doit= false;
		String oldText= document.get(offset, length);
		int delta= offset <= command.offset ? 0 : (command.text == null ? 0 : command.text.length()) - command.length; 
		IRegion replacedRegion= new Region(command.offset, command.text == null ? 0 : command.text.length());
		DocumentEvent undoEvent= new DocumentEvent(document, offset + delta, text == null ? 0 : text.length(), oldText);
		install(replacedRegion, undoEvent);
	}
	/**
	 * Closes the block immediately on the next line.
	 */
	private void makeBlock(IDocument document, DocumentCommand command) throws BadLocationException {