Fix leading whitespace multiplying on multiline comments. Fixes #35

src/main/java/blue/endless/jankson/impl/CommentParserContext.java

@@ -35,6 +35,7 @@ public class CommentParserContext implements ParserContext<String> {
 
 	int prevChar = -1;
 
+	boolean startOfLine = true;
 	boolean multiLine = false;
 	boolean done = false;
 
@@ -74,6 +75,14 @@ public boolean consume(int codePoint, Jankson loader) throws SyntaxError {
 
 		//We're past the initiating character(s)
 		if (multiLine) {
+			if (codePoint!='\n' && Character.isWhitespace(codePoint)) {
+				if (startOfLine) return true;
+			} else if (codePoint=='\n') {
+				startOfLine = true;
+			} else {
+				if (startOfLine) startOfLine = false;
+			}
+
 			if (codePoint=='/' && prevChar=='*') {
 				result.deleteCharAt(result.length()-1); //Get rid of the *
 				done = true;

src/test/java/blue/endless/jankson/TestDeserializer.java

@@ -183,4 +183,20 @@ public void testUnicodeEscapes() throws SyntaxError {
 		String slightlyUnescaped = ((JsonPrimitive)jankson.load("{'test': \"\\uu003C\" }").get("test")).asString();
 		Assert.assertEquals("Unicode escapes which are themselves escaped must be unescaped exactly one level.", "\\u003c", slightlyUnescaped); //implied here is that hex digit case MUST be lost
 	}
+
+	/**
+	 * Issue #35: Serialize/deserialize cycles of multiline comments cause whitespace of lines after the first to creep larger and larger
+	 * 
+	 * <p>Now leading whitespace is stripped from each line of multiline comments.
+	 */
+	@Test
+	public void testMultilineCommentReads() throws SyntaxError {
+		JsonObject obj = new JsonObject();
+		JsonPrimitive p = new JsonPrimitive(42);
+		obj.put("thing", p, "this is a multiline\ncomment");
+
+		JsonObject recyc = jankson.load(obj.toJson(JsonGrammar.JSON5));
+
+		Assert.assertEquals(obj.toJson(JsonGrammar.JSON5), recyc.toJson(JsonGrammar.JSON5));
+	}
 }