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
listRewriter.replace(ifStatement, newIf, null);
				newIf = null;
			} else {
				listRewriter.remove(ifStatement, null);
			}
		}
		
		String label = CorrectionMessages.AdvancedQuickAssistProcessor_joinWithOr_description;
		Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(),
				rewrite, 1, image);
		resultingCollections.add(proposal);
		return true;
	}
	private static Expression getParenthesizedForOrIfNeeded(AST ast, ASTRewrite rewrite, Expression expression) {
		boolean addParentheses = false;
		int nodeType = expression.getNodeType();
		addParentheses = nodeType == ASTNode.CONDITIONAL_EXPRESSION || nodeType == ASTNode.ASSIGNMENT
				|| nodeType == ASTNode.INSTANCEOF_EXPRESSION;
		expression = (Expression) rewrite.createCopyTarget(expression);
		if (addParentheses) {
			return getParenthesizedExpression(ast, expression);
		}
		return expression;
	}
	private static boolean getSplitOrConditionProposals(IInvocationContext context, ASTNode node,
			Collection resultingCollections) {
		Operator orOperator = InfixExpression.Operator.CONDITIONAL_OR;
		
		if (!(node instanceof InfixExpression)) {