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
resultingCollections.add(proposal);
		return true;
	}
	private static boolean getJoinIfListInIfElseIfProposals(IInvocationContext context,
			ASTNode covering,
			ArrayList coveredNodes,
			Collection resultingCollections) {
		if (coveredNodes.isEmpty()) {
			return false;
		}
		
		if (coveredNodes.size() < 2) {
			return false;
		}
		
		for (Iterator I= coveredNodes.iterator(); I.hasNext();) {
			ASTNode node= (ASTNode) I.next();
			if (!(node instanceof IfStatement)) {
				return false;
			}
			IfStatement ifStatement= (IfStatement) node;
			if (ifStatement.getElseStatement() != null) {
				return false;
			}
		}
		
		if (resultingCollections == null) {
			return true;
		}