Bug 120389 [quick fix] replace conditional with if-else removes + from +=
Using Build I20051102-1600. I create a class [snip] package bla; class Bla { void bla() { boolean cond = true; int i = 42; i += ( cond ) ? 1 : 2; } } [snap] Now I move the cursor over the second cond and trigger the Quickfix 'Replace conditional with if-else'. This results in [snip] int i = 42; if (cond) i = 1; else i = 2; [snap] i.e. replaces the '+=' with '='. (Credit to Jordi Boehme for finding this.)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/AdvancedQuickAssistProcessor.java
if (condition == null) {
				condition = ast.newInfixExpression();
				condition.setOperator(orOperator);
				condition.setLeftOperand(ifCondition);
			} else if (!hasRightOperand) {
				condition.setRightOperand(ifCondition);
				hasRightOperand = true;
			} else {
				InfixExpression newCondition = ast.newInfixExpression();
				newCondition.setOperator(orOperator);
				newCondition.setLeftOperand(condition);
				newCondition.setRightOperand(ifCondition);
				condition = newCondition;
			}
		}
		
		IfStatement newIf = ast.newIfStatement();
		newIf.setExpression(condition);
		newIf.setThenStatement(thenStatement);
		
		ListRewrite listRewriter = null;
		for (Iterator I = coveredNodes.iterator(); I.hasNext();) {
			IfStatement ifStatement = (IfStatement) I.next();
			if (listRewriter == null) {
				Block sourceBlock = (Block) ifStatement.getParent();
				
				listRewriter = rewrite.getListRewrite(sourceBlock,
					(ChildListPropertyDescriptor) ifStatement.getLocationInParent());
			}
			if (newIf != null) {