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I’ve faces with the next one regular expression: "^.*\\(?:some\\).*$".
I’ve understand ^ and $ and \\( with \\) for back-referencing.
But what is the ?:some construction?
A group starting with
?:is a non capturing group, means there will be no backreference, thesomewould be your search word.^is an anchor to match the start of the line$is an anchor to match the end of the lineYour expression would match e.g.