Bug: Anchors and some code are being detected as tags

Apologies if I should have reported this elsewhere. I was unsure if this affected WriteFreely and was unsure if I should report it on GitHub or not.

Thanks to working with the API, I’ve discovered that Markdown anchors and some code are being detected as tags.

For example, in this CSS code…

a:link {
	text-decoration: none;
	color: #636363;
}

a:visited {
	text-decoration: none;
	color: #636363;
}

a:hover {
	text-decoration: underline;
	color: #2d2d2d;
}

a:active {
	text-decoration: underline;
	color: #2d2d2d;
}

…the #2d2d2d color code is being detected as a tag, but other color codes are not.

Similarly, in using an anchor like this…

* [Problem 1](#problem-1)

#problem is being detected as a tag.