Hi all I'm a moderator over at cstheory.stackexchange.com, and noticed this question on regex matching, which had been migrated over from programmers.
The mandate for our site is 'research level' questions in theoretical computer science, and so while this question is in scope in general for theoretical computer science, it's not at the right level for our site (as the community has deemed it). It seems like, given the question, the right migration venue is math.stackechange.com (but I wouldn't want to speak for them).
I don't have a question about this per se, but I thought I'd mention this here, in the event that other questions come up for migration. Should I be posting this on meta.SO instead ?