fix --- being converted in educateDashes

The original Perl smartypants.pl does not do such conversion. The ``---``
convsersion was added in v1.5_1.5 (eed4a8a16f11).

3 files changed, 9 insertions, 3 deletions

diff --git a/CHANGES.rst b/CHANGES.rst
index e47dab2..19ae366 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -17,6 +17,13 @@ development:
         - add ``doc`` for documentation generation
         - add ``upload_doc`` for uploading to PyPI
         - add ``clean`` for cleaning up built files
+    - fix ``---`` being converted in ``educateDashes``
+
+        The Perl doesn't do such, and it's possibly a mistaken in
+        version v1.5_1.5 (eed4a8a16f11).
+
+        If you want the same behavior with default attributes, you need to use
+        ``Attr.q | Attr.b | Attr.i | Attr.e``.
 
 1.8.1: 2013-08-20T02:27:35Z
 
diff --git a/smartypants.py b/smartypants.py
index 9e4d038..33e5e94 100755
--- a/smartypants.py
+++ b/smartypants.py
@@ -488,8 +488,7 @@ def educateDashes(text):
     Convert ``--`` in *text* into em-dash HTML entities.
     """
 
-    text = re.sub('---', '–', text)  # en (yes, backwards)
-    text = re.sub('--', '—', text)   # em (yes, backwards)
+    text = re.sub('--', '—', text)
     return text
 
 
diff --git a/tests/test.py b/tests/test.py
index 549b19f..ffd20ac 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -35,7 +35,7 @@ class SmartyPantsTestCase(unittest.TestCase):
 
         self.assertEqual(sp("1440-80's"), "1440-80’s")
         self.assertEqual(sp("1440-'80s"), "1440-‘80s")
-        self.assertEqual(sp("1440---'80s"), "1440–‘80s")
+        self.assertEqual(sp("1440--'80s"), "1440—‘80s")
         self.assertEqual(sp("1960s"), "1960s")  # no effect.
         self.assertEqual(sp("1960's"), "1960’s")
         self.assertEqual(sp("one two '60s"), "one two ‘60s")