Added markdown parsing for comments so links in comments now appear properly.

Also rewrote part of the HTML rewriting code so it doesn't introduce an additional wrapping element in the output which was added due to a html5lib requirements on input.

python/packages/markdown/extensions/smart_strong.py

@@ -0,0 +1,45 @@
+'''
+Smart_Strong Extension for Python-Markdown
+==========================================
+
+This extention adds smarter handling of double underscores within words.
+
+Simple Usage:
+
+    >>> import markdown
+    >>> print markdown.markdown('Text with double__underscore__words.',
+    ...                   extensions=['smart_strong'])
+    <p>Text with double__underscore__words.</p>
+    >>> print markdown.markdown('__Strong__ still works.',
+    ...                   extensions=['smart_strong'])
+    <p><strong>Strong</strong> still works.</p>
+    >>> print markdown.markdown('__this__works__too__.',
+    ...                   extensions=['smart_strong'])
+    <p><strong>this__works__too</strong>.</p>
+
+Copyright 2011
+[Waylan Limberg](http://achinghead.com)
+
+'''
+
+import re
+import markdown
+from markdown.inlinepatterns import SimpleTagPattern
+
+SMART_STRONG_RE = r'(?<!\w)(_{2})(?!_)(.+?)(?<!_)\2(?!\w)'
+STRONG_RE = r'(\*{2})(.+?)\2'
+
+class SmartEmphasisExtension(markdown.extensions.Extension):
+    """ Add smart_emphasis extension to Markdown class."""
+
+    def extendMarkdown(self, md, md_globals):
+        """ Modify inline patterns. """
+        md.inlinePatterns['strong'] = SimpleTagPattern(STRONG_RE, 'strong')
+        md.inlinePatterns.add('strong2', SimpleTagPattern(SMART_STRONG_RE, 'strong'), '>emphasis2')
+
+def makeExtension(configs={}):
+    return SmartEmphasisExtension(configs=dict(configs))
+
+if __name__ == '__main__':
+    import doctest
+    doctest.testmod()