From 0244474b2dbf15986891a8d700c7bb121dc6f55f Mon Sep 17 00:00:00 2001
From: Adam Wood <adam.michael.wood@gmail.com>
Date: Wed, 26 Oct 2016 10:17:38 -0700
Subject: lists are not tables - fixes #478 (#507)

---
 markdown/extensions/tables.py      | 3 ++-
 tests/extensions/extra/tables.html | 7 ++++++-
 tests/extensions/extra/tables.txt  | 9 +++++++--
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/markdown/extensions/tables.py b/markdown/extensions/tables.py
index 8c11739..7c75507 100644
--- a/markdown/extensions/tables.py
+++ b/markdown/extensions/tables.py
@@ -30,7 +30,8 @@ class TableProcessor(BlockProcessor):
         rows = block.split('\n')
         return (len(rows) > 1 and '|' in rows[0] and
                 '|' in rows[1] and '-' in rows[1] and
-                rows[1].strip()[0] in ['|', ':', '-'])
+                rows[1].strip()[0] in ['|', ':', '-'] and
+                set(rows[1]) <= set('|:- '))
 
     def run(self, parent, blocks):
         """ Parse a table block and build table. """
diff --git a/tests/extensions/extra/tables.html b/tests/extensions/extra/tables.html
index b5c08be..85d9940 100644
--- a/tests/extensions/extra/tables.html
+++ b/tests/extensions/extra/tables.html
@@ -250,4 +250,9 @@ Content Cell | Content Cell
 <td>(<code>bar</code>) and <code>baz</code>.</td>
 </tr>
 </tbody>
-</table>
\ No newline at end of file
+</table>
+<p>Lists are not tables</p>
+<ul>
+<li>this | should | not</li>
+<li>be | a | table</li>
+</ul>
\ No newline at end of file
diff --git a/tests/extensions/extra/tables.txt b/tests/extensions/extra/tables.txt
index c9ca70a..c843918 100644
--- a/tests/extensions/extra/tables.txt
+++ b/tests/extensions/extra/tables.txt
@@ -45,7 +45,7 @@ Three spaces in front of a table:
    | Content Cell | Content Cell  |
 
 Four spaces is a code block:
-   
+
     First Header | Second Header
     ------------ | -------------
     Content Cell | Content Cell
@@ -74,4 +74,9 @@ A test for issue #440:
 
 foo | bar
 --- | ---
-foo | (`bar`) and `baz`.
\ No newline at end of file
+foo | (`bar`) and `baz`.
+
+Lists are not tables
+
+ - this | should | not
+ - be | a | table
-- 
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