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Last active December 11, 2015 01:19
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GFM has undocumented difference in hN parsing
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repro.md

GFM requires space between # and string to create an hN.

% curl -d '{"text": "#asdf", "mode": "gfm"}' https://api.github.com/markdown
<p>#asdf</p>

% curl -d '{"text": "# asdf", "mode": "gfm"}' https://api.github.com/markdown
<h1>asdf</h1>

markdown doesn't.

% curl -d '{"text": "#asdf", "mode": "markdown"}' https://api.github.com/markdown
<h1>
<a name="asdf" class="anchor" href="#asdf"><span class="mini-icon mini-icon-link"></span></a>asdf</h1>

% curl -d '{"text": "# asdf", "mode": "markdown"}' https://api.github.com/markdown
<h1>
<a name="asdf" class="anchor" href="#asdf"><span class="mini-icon mini-icon-link"></span></a>asdf</h1>
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