Currently looking for good questions about regex engine, especially about quirks, bugs and performance issues.

If I comment when I downvote, I usually have the intention to remove it if the problem is corrected.

If you find any post of mine is outdated or has some minor mistakes, please comment with the correct information or submit an edit to my post. If it is horribly wrong, please make your own answer and ping me to revise or remove my post.

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