1 files changed, 18 insertions, 6 deletions
diff --git a/tests/test_regexlexer.py b/tests/test_regexlexer.py
index d919a950..778f3d03 100644
--- a/tests/test_regexlexer.py
+++ b/tests/test_regexlexer.py
@@ -11,7 +11,6 @@ import unittest
 
 from pygments.token import Text
 from pygments.lexer import RegexLexer
-from pygments.lexer import bygroups
 from pygments.lexer import default
 
 
@@ -21,6 +20,8 @@ class TestLexer(RegexLexer):
         'root': [
             ('a', Text.Root, 'rag'),
             ('e', Text.Root),
+            ('#', Text.Root, '#pop'),
+            ('@', Text.Root, ('#pop', '#pop')),
             default(('beer', 'beer'))
         ],
         'beer': [
@@ -37,18 +38,29 @@ class TupleTransTest(unittest.TestCase):
     def test(self):
         lx = TestLexer()
         toks = list(lx.get_tokens_unprocessed('abcde'))
-        self.assertEqual(toks,
-           [(0, Text.Root, 'a'), (1, Text.Rag, 'b'), (2, Text.Rag, 'c'),
+        self.assertEqual(toks, [
+            (0, Text.Root, 'a'), (1, Text.Rag, 'b'), (2, Text.Rag, 'c'),
             (3, Text.Beer, 'd'), (4, Text.Root, 'e')])
 
     def test_multiline(self):
         lx = TestLexer()
         toks = list(lx.get_tokens_unprocessed('a\ne'))
-        self.assertEqual(toks,
-           [(0, Text.Root, 'a'), (1, Text, u'\n'),
-            (2, Text.Root, 'e')])
+        self.assertEqual(toks, [
+            (0, Text.Root, 'a'), (1, Text, u'\n'), (2, Text.Root, 'e')])
 
     def test_default(self):
         lx = TestLexer()
         toks = list(lx.get_tokens_unprocessed('d'))
         self.assertEqual(toks, [(0, Text.Beer, 'd')])
+
+
+class PopEmptyTest(unittest.TestCase):
+    def test_regular(self):
+        lx = TestLexer()
+        toks = list(lx.get_tokens_unprocessed('#e'))
+        self.assertEqual(toks, [(0, Text.Root, '#'), (1, Text.Root, 'e')])
+
+    def test_tuple(self):
+        lx = TestLexer()
+        toks = list(lx.get_tokens_unprocessed('@e'))
+        self.assertEqual(toks, [(0, Text.Root, '@'), (1, Text.Root, 'e')])