[Feature request] all of the captured group

[kckennylau]

For example, the regex (.)+, when applied to abcd, would have the first capture group containing for elements, {a,b,c,d}.

The feature request is to create a substitution pattern, for example $a, to substitute all of the capture groups.

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Demonstration:

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• Stage: (\d)+ replaced by $a1$a1
• Input: abc123def456
• Output:abc123123def456456

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• Stage: ((a)|(.))+ replaced by $a1$a2
• Input: abcabbcab
• Output: aaabcbbcb