Attribute lists are not permitted to contain newlines. Fixes #482.

Author: waylan

markdown/extensions/attr_list.py

@@ -72,7 +72,7 @@ def isheader(elem):
 
 class AttrListTreeprocessor(Treeprocessor):
 
-    BASE_RE = r'\{\:?([^\}]*)\}'
+    BASE_RE = r'\{\:?([^\}\n]*)\}'
     HEADER_RE = re.compile(r'[ ]+%s[ ]*$' % BASE_RE)
     BLOCK_RE = re.compile(r'\n[ ]*%s[ ]*$' % BASE_RE)
     INLINE_RE = re.compile(r'^%s' % BASE_RE)

tests/extensions/attr_list.html

@@ -63,4 +63,6 @@ <h1>Bad attributes</h1>
 <p>Value without <em>key</em></p>
 <p>No <em>key or value</em></p>
 <p><em>Weirdness</em></p>
-<p><em>More weirdness</em></p>
+<p><em>More weirdness</em></p>
+<p>Attr_lists do not contain <em>newlines</em>{ foo=bar
+key=value }</p>

tests/extensions/attr_list.txt

@@ -88,3 +88,5 @@ No *key or value*{ = }
 
 *More weirdness*{ === }
 
+Attr_lists do not contain *newlines*{ foo=bar
+key=value }