Highlighting errors

[lzandman]

I noticed the syntax highlighting has some issues:

1. The sensitive keyword isn't recognized in a variable block (screenshot line 47).
2. Strings ending with a double backslash (\\) are wrongly parsed. As you can see (screenshot line 52), the second to last backslash char is colored belonging to the literal string, whereas the last backslash char is colored as if it belongs to the closing quote char.

Here's a screenshot showing both issues:

When I delete the last two backslash chars from line 52, the syntax highlighting is fixed for the code following it: