Expect lines to be indented 8 places when tabs are used

Fixes #836

7 files changed, 33 insertions, 28 deletions

diff --git a/pycodestyle.py b/pycodestyle.py
index 0ecd7fd..4a0d17b 100755
--- a/pycodestyle.py
+++ b/pycodestyle.py
@@ -534,9 +534,11 @@ def indentation(logical_line, previous_logical, indent_char,
     elif not indent_expect and indent_level > previous_indent_level:
         yield 0, tmpl % (3 + c, "unexpected indentation")
 
-    expected_indent_level = previous_indent_level + 4
-    if indent_expect and indent_level > expected_indent_level:
-        yield 0, tmpl % (7, 'over-indented')
+    if indent_expect:
+        expected_indent_amount = 8 if indent_char == '\t' else 4
+        expected_indent_level = previous_indent_level + expected_indent_amount
+        if indent_level > expected_indent_level:
+            yield 0, tmpl % (7, 'over-indented')
 
 
 @register_check
diff --git a/testsuite/E10.py b/testsuite/E10.py
index 08b03a0..7b42594 100644
--- a/testsuite/E10.py
+++ b/testsuite/E10.py
@@ -3,7 +3,7 @@ for a in 'abc':
     for b in 'xyz':
         print a  # indented with 8 spaces
 	print b  # indented with 1 tab
-#: E101 E117 E122 W191 W191
+#: E101 E122 W191 W191
 if True:
 	pass
 
@@ -27,7 +27,7 @@ class TestP4Poller(unittest.TestCase):
         pass
 
 #
-#: E101 E117 W191 W191
+#: E101 W191 W191
 if True:
 	foo(1,
 	    2)
diff --git a/testsuite/E11.py b/testsuite/E11.py
index c7b11d1..ef87d92 100644
--- a/testsuite/E11.py
+++ b/testsuite/E11.py
@@ -37,3 +37,6 @@ def start(self):
 #: E117
 def start():
         print
+#: E117 W191
+def start():
+		print
diff --git a/testsuite/E90.py b/testsuite/E90.py
index 3fd2b32..2c18e9a 100644
--- a/testsuite/E90.py
+++ b/testsuite/E90.py
@@ -2,7 +2,7 @@
 }
 #: E901
 = [x
-#: E901 E101 E117 W191
+#: E901 E101 W191
 while True:
     try:
 	    pass
diff --git a/testsuite/W19.py b/testsuite/W19.py
index d77bc9e..ed69e2b 100644
--- a/testsuite/W19.py
+++ b/testsuite/W19.py
@@ -1,4 +1,4 @@
-#: E117 W191
+#: W191
 if False:
 	print  # indented with 1 tab
 #:
@@ -7,30 +7,30 @@ if False:
 #: W191
 y = x == 2 \
 	or x == 3
-#: E101 E117 W191 W504
+#: E101 W191 W504
 if (
         x == (
             3
         ) or
         y == 4):
 	pass
-#: E101 E117 W191
+#: E101 W191
 if x == 2 \
     or y > 1 \
         or x == 3:
 	pass
-#: E101 E117 W191
+#: E101 W191
 if x == 2 \
         or y > 1 \
         or x == 3:
 	pass
 #:
 
-#: E101 E117 W191 W504
+#: E101 W191 W504
 if (foo == bar and
         baz == frop):
 	pass
-#: E101 E117 W191 W504
+#: E101 W191 W504
 if (
     foo == bar and
     baz == frop
@@ -38,25 +38,25 @@ if (
 	pass
 #:
 
-#: E101 E101 E117 W191 W191
+#: E101 E101 W191 W191
 if start[1] > end_col and not (
         over_indent == 4 and indent_next):
 	return(0, "E121 continuation line over-"
 	       "indented for visual indent")
 #:
 
-#: E101 E117 W191
+#: E101 W191
 
 
 def long_function_name(
         var_one, var_two, var_three,
         var_four):
 	print(var_one)
-#: E101 E117 W191 W504
+#: E101 W191 W504
 if ((row < 0 or self.moduleCount <= row or
      col < 0 or self.moduleCount <= col)):
 	raise Exception("%s,%s - %s" % (row, col, self.moduleCount))
-#: E101 E101 E101 E101 E117 W191 W191 W191 W191 W191 W191
+#: E101 E101 E101 E101 W191 W191 W191 W191 W191 W191
 if bar:
 	return(
 	    start, 'E121 lines starting with a '
@@ -65,35 +65,35 @@ if bar:
 	    "bracket's line"
 	)
 #
-#: E101 E117 W191 W504
+#: E101 W191 W504
 # you want vertical alignment, so use a parens
 if ((foo.bar("baz") and
      foo.bar("frop")
      )):
 	print "yes"
-#: E101 E117 W191 W504
+#: E101 W191 W504
 # also ok, but starting to look like LISP
 if ((foo.bar("baz") and
      foo.bar("frop"))):
 	print "yes"
-#: E101 E117 W191 W504
+#: E101 W191 W504
 if (a == 2 or
     b == "abc def ghi"
          "jkl mno"):
 	return True
-#: E101 E117 W191 W504
+#: E101 W191 W504
 if (a == 2 or
     b == """abc def ghi
 jkl mno"""):
 	return True
-#: W191:2:1 W191:3:1 E101:3:2 E117
+#: W191:2:1 W191:3:1 E101:3:2
 if length > options.max_line_length:
 	return options.max_line_length, \
 	    "E501 line too long (%d characters)" % length
 
 
 #
-#: E101 E117 W191 W191 W504
+#: E101 W191 W191 W504
 if os.path.exists(os.path.join(path, PEP8_BIN)):
 	cmd = ([os.path.join(path, PEP8_BIN)] +
 	       self._pep8_options(targetfile))
@@ -119,19 +119,19 @@ or long long long long long long long long long long long long long long long lo
 even though the noqa comment is not immediately after the string
 ''' + foo  # noqa
 #
-#: E101 E117 W191
+#: E101 W191
 if foo is None and bar is "frop" and \
         blah == 'yeah':
 	blah = 'yeahnah'
 
 
 #
-#: E117 W191 W191 W191
+#: W191 W191 W191
 if True:
 	foo(
 		1,
 		2)
-#: E117 W191 W191 W191 W191 W191
+#: W191 W191 W191 W191 W191
 def test_keys(self):
 	"""areas.json - All regions are accounted for."""
 	expected = set([
diff --git a/testsuite/test_api.py b/testsuite/test_api.py
index ddc28b8..c69e54d 100644
--- a/testsuite/test_api.py
+++ b/testsuite/test_api.py
@@ -125,7 +125,7 @@ class APITestCase(unittest.TestCase):
         report = pycodestyle.StyleGuide().check_files([E11])
         stdout = sys.stdout.getvalue().splitlines()
         self.assertEqual(len(stdout), report.total_errors)
-        self.assertEqual(report.total_errors, 20)
+        self.assertEqual(report.total_errors, 24)
         self.assertFalse(sys.stderr)
         self.reset()
 
@@ -133,7 +133,7 @@ class APITestCase(unittest.TestCase):
         report = pycodestyle.StyleGuide(paths=[E11]).check_files()
         stdout = sys.stdout.getvalue().splitlines()
         self.assertEqual(len(stdout), report.total_errors)
-        self.assertEqual(report.total_errors, 20)
+        self.assertEqual(report.total_errors, 24)
         self.assertFalse(sys.stderr)
         self.reset()
 
diff --git a/testsuite/test_shell.py b/testsuite/test_shell.py
index e4d0871..3878194 100644
--- a/testsuite/test_shell.py
+++ b/testsuite/test_shell.py
@@ -77,7 +77,7 @@ class ShellTestCase(unittest.TestCase):
         stdout = stdout.splitlines()
         self.assertEqual(errcode, 1)
         self.assertFalse(stderr)
-        self.assertEqual(len(stdout), 20)
+        self.assertEqual(len(stdout), 24)
         for line, num, col in zip(stdout, (3, 6, 6, 9, 12), (3, 6, 6, 1, 5)):
             path, x, y, msg = line.split(':')
             self.assertTrue(path.endswith(E11))