additional tests recommended in review comments

config/src/main/java/com/typesafe/config/impl/ConfigDocumentParser.java

@@ -241,7 +241,7 @@ final class ConfigDocumentParser {
             AbstractConfigNodeValue v = null;
             int startingEqualsCount = equalsCount;
 
-            if (Tokens.isValue(t) || Tokens.isUnquotedText(t) || Tokens.isSubstitution(t)) {
+            if (Tokens.isValue(t) || Tokens.isUnquotedText(t) || Tokens.isSubstitution(t)|| t == Tokens.OPEN_ROUND) {
                 v = new ConfigNodeSimpleValue(t);
             } else if (t == Tokens.OPEN_CURLY) {
                 v = parseObject(true);

config/src/test/scala/com/typesafe/config/impl/ConfParserTest.scala

@@ -787,6 +787,18 @@ class ConfParserTest extends TestUtils {
         assertTrue(s"expected match for <$expected> but got <$actual>", actual.matches(expected))
     }
 
+    @Test
+    def includeRequiredFoundButNestedIncludeMissing() {
+        // set this to allowMissing=true to demonstrate that the missing inclusion causes failure despite this setting
+        val missing = ConfigParseOptions.defaults().setAllowMissing(true)
+
+        val conf = ConfigFactory.parseString("include required(classpath( \"test03\") )", missing)
+
+        val expected = "This is in the included file"
+        val actual = conf.getString("foo")
+        assertTrue(s"expected match for <$expected> but got <$actual>", actual.matches(expected))
+    }
+
     @Test
     def includeRequiredFound() {
         val confs = Seq(

config/src/test/scala/com/typesafe/config/impl/TokenizerTest.scala

@@ -97,6 +97,13 @@ class TokenizerTest extends TestUtils {
         tokenizerTest(expected, source)
     }
 
+    @Test
+    def tokenizeUnquotedTextContainingRoundBrace() {
+        val source = """(footrue)"""
+        val expected = List(tokenUnquoted("(footrue)"))
+        tokenizerTest(expected, source)
+    }
+
     @Test
     def tokenizeUnquotedTextContainingTrue() {
         val source = """footrue"""