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/FastJavaPartitionScanner.java
switch (ch) {
	 		case ICharacterScanner.EOF:
		 		if (fTokenLength > 0) {
		 			fLast= NONE; 
		 			return preFix(fState, JAVA, NONE, 0);
		 		} else {
		 			fLast= NONE;
		 			fPrefixLength= 0;
					return Token.EOF;
		 		}
	 		case '\r':
	 			
	 			if (!fgEmulate && fLast != CARRIAGE_RETURN) {
						fLast= CARRIAGE_RETURN;
						fTokenLength++;
	 					continue;
	 			} else {
	 				
					switch (fState) {
					case SINGLE_LINE_COMMENT:
					case CHARACTER:
					case STRING:
						if (fTokenLength > 0) {
							IToken token= fTokens[fState];
							
				 			
							if (fgEmulate) {
								fTokenLength++;