Sample from github help
The next paragraph contains two phrases separated by a single newline character:
Roses are red
Violets are blue
And it's true! Elsewhere in github, this becomes:
<p>Roses are red<br>
Violets are blue</p>
Roses are red Violets are blue
In a gist, this becomes:
<p>Roses are red
Violets are blue</p>
Remarkably, Gist comments get the full GHFM treatment!
Roses are red
Violets are blue
Comments get newlines
Why not gists too?