MessageEmitterAdapter.setHtml(true) causes misspellings

[cvrebert]

This is using the latest version from https://github.com/validator/validator.github.io .
Calling .setHtml(true) when initializing the MessageEmitterAdapter seems to cause the repetition of the first letter in the sentence of some validation messages:

• "Aattribute href not allowed on element span at this point."
• "Eelement p not allowed as child of element ul in this context. (Suppressing further errors from this subtree.)"

Here's the main relevant part of my code, although I think the bug should be reproducible without it: https://github.com/cvrebert/lmvtfy/blob/master/src/main/scala/com/chrisrebert/lmvtfy/validation/Html5Validator.scala
It's in Scala but heavily based on your SimpleCommandLineValidator. I'm happy to help out if you have any trouble reproducing the problem. I have a couple of reliable Specs2 testcases that catch the bug.

X-Ref: validator/validator#2

[cvrebert]

Closing since there's been a reply on validator/validator#2