Created Issue: Colorization of single-line comments is strange [315]

When typing a single-line comment inside a Razor block immediately before embedded markup, typing the first slash causes the HTML to be classified as code and colorization breaks. The parser should have better error recovery around an incomplete single-line comment.

This also means a full reparse occurs, which can slow down typing performance.

Identified by WebMatrix Editor team. Created from WebMatrix Bug# 37123