Bug 34221 [code manipulation] Comment and uncomment code
The same key ctrl-/ should be used for both comments and uncommenting code. If code isn't commented ctrl-/ will comment. If already commented ctrl-/ will uncomment it. If two levels of comments, uncomment the first, then the second. For example //this is a comment ////this is a second comment hitting ctrl-/ would result in this is a comment //this is a second comment
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
private boolean fCloseBrackets= true;
		private boolean fCloseStrings= true;
		private final String CATEGORY= toString();
		private IPositionUpdater fUpdater= new ExclusivePositionUpdater(CATEGORY);
		private Stack fBracketLevelStack= new Stack();
		public void setCloseBracketsEnabled(boolean enabled) {
			fCloseBrackets= enabled;
		}
		public void setCloseStringsEnabled(boolean enabled) {
			fCloseStrings= enabled;
		}
		private boolean hasIdentifierToTheRight(IDocument document, int offset) {
			try {
				int end= offset;
				IRegion endLine= document.getLineInformationOfOffset(end);
				int maxEnd= endLine.getOffset() + endLine.getLength();
				while (end != maxEnd && Character.isWhitespace(document.getChar(end)))
					++end;
				return end != maxEnd && Character.isJavaIdentifierPart(document.getChar(end));
			} catch (BadLocationException e) {
				
				return true;
			}
		}
		private boolean hasIdentifierToTheLeft(IDocument document, int offset) {
			try {
				int start= offset;