Bug 43032 Autoindent/Smart Tab in case statement
... case label: { <press Enter here> I <new cursor position> Indentation level should be one less.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaIndenter.java
while (true) {
					switch (fToken) {
						case Symbols.TokenRBRACE:
							
							skipScope(Symbols.TokenLBRACE, Symbols.TokenRBRACE);
							nextToken();
									
							if (skipBrackets())
								break;
							else
								return false;
						case Symbols.TokenRBRACKET: 
							skipScope(Symbols.TokenLBRACKET, Symbols.TokenRBRACKET);
							break;
						case Symbols.TokenRPAREN: 
							skipScope(Symbols.TokenLPAREN, Symbols.TokenRPAREN);
							break;
						case Symbols.TokenSEMICOLON:
							return true;
						case Symbols.TokenLBRACE:
							return true;
						case Symbols.TokenLPAREN:
							return false;
						case Symbols.TokenLBRACKET:
							return false;
						case Symbols.TokenDO:
							return true;
						case Symbols.TokenIF:
							return true;
						case Symbols.TokenFOR: