remark-emoticon/zmarkdown can't start a paragraph by smiley >_<

When we write:

>_< hello

we get

<blockquote>
<p>_&#x3C; hello</p>
</blockquote>

What is expected is the same result as

X/ hello

i.e

<p><img src="/static/smileys/pinch.png" alt="X/" class="smiley"> hello</p>

[vhf]

This fix only works if you replace >_< with this new syntax, and adding it doesn’t make sense to me since we already have a couple of ways of getting this smiley.

[arobase-che]

By allowing that syntax :

:>_<:

Colon it already used to insert emoji. Adding a syntax that allow an optional colon at the begin and end of the emoji to escape it does’t seem weird to me.