TOC regex pattern should be matched on the state.src only from the current position parsed

[GiridharanNarayanan]

Issue:

• Multiple TOCs equal to the number of "[" in the same state.src as that of the state which contains [[toc]].
• This is because we do the regex match on the whole src instead of the substring of the src from the position which we are currently processing.

Solution:

• Match the regex only from the position we are currently processing in the state.
• I shall raise a PR if you ack this as an issue.

RunKit example. The highlighted "[" is causing the second TOC to be rendered.

[GiridharanNarayanan]

Have created a PR #36

[martinlissmyr]

Thanks! 👏