JavaScript RegExp to match “%.*”, but not “\%.*”

Question

I am trying to improve upon the LaTeX brush used by Alex Gorbatchev's SyntaxHighlighter. The brush I found online correctly matches LaTeX comments, which start with % , but gets it wrong when it is escaped \\% ; ie, it thinks the latter is also a comment.

The RegExp used in the brush is %.* . I figured that a negative lookbehind (?<!\\\\)%.* would work, but JavaScript doesn't support this... Any other ideas?

Thanks :)

Answer 1

我猜你可以用这个([^\\\\]|^)%.*说它不是\\或它是行的开始

Answer 2

Have you tried

([^\\]|^)%.*

To match the start of the string or a non \\ character...?