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
ifStatement.setThenStatement(currentBlock);
						allBlocks.add(currentBlock);
					} else {
						
						defaultBlock= ast.newBlock();
						currentBlock= defaultBlock;
						allBlocks.add(currentBlock);
						
					}
				}
				
				{
					hasStopAsLastExecutableStatement = hasStopAsLastExecutableStatement(statement);
					Statement copyStatement= copyStatementExceptBreak(ast, rewrite, statement);
										
					
					currentBlock.statements().add(copyStatement);
				}
			}
		}
		
		if (defaultBlock != null) {
			currentIfStatement.setElseStatement(defaultBlock);
		}
		
		for (int i= 0; i < allBlocks.size(); i++) {
			Block block= (Block) allBlocks.get(i);
			List statements= block.statements();
			if (statements.size() == 1 && statements.get(0) instanceof Block) {
				Block innerBlock= (Block) statements.remove(0);