Escaped spaces in link destination

[ScottAbbey]

The combination of the following two statements from section 6.5, Links, in the CommonMark spec:

The destination cannot contain spaces or line breaks, even if enclosed in pointy brackets:

Note that a backslash before a non-escapable character is just a backslash:

Leads me to believe that the following:

Input:

[a](te\ st)

Output:

<p><a href="te%5C%09st">a</a></p>

Behavior in this implementation of CommonMark is incorrect.

The javascript reference implementation sees this as <p>[a](te\ st)</p> instead, which seems to agree with the spec.

[jgm]

Right. This looks like a bug.