failsafe wasn't in except for analysis, add new test.

Author: parrt

java/src/org/antlr/codebuff/Formatter.java

@@ -96,6 +96,10 @@ public void processToken(int indexIntoRealTokens, int tokenIndexInStream) {
 		int indent = indentClassifier.classify(k, features, corpus.indent, CollectFeatures.MAX_CONTEXT_DIFF_THRESHOLD);
 		int ws = wsClassifier.classify(k, features, corpus.injectWS, CollectFeatures.MAX_CONTEXT_DIFF_THRESHOLD);
 
+		if ( ws==0 && cannotJoin(realTokens.get(indexIntoRealTokens-1), curToken) ) { // failsafe!
+			ws = 1;
+		}
+
 		TokenPositionAnalysis tokenPositionAnalysis =
 			getTokenAnalysis(features, indexIntoRealTokens, tokenIndexInStream, injectNewline, alignWithPrevious, indent, ws);
 		analysis.setSize(tokenIndexInStream+1);

samples/Switch.java

@@ -0,0 +1,13 @@
+public class T {
+	void f() {
+		switch ( x ) {
+			case 0 :
+				x=y;
+				break;
+			case 1 :
+				break;
+			default :
+		}
+		int y;
+	}
+}