offset(p1) public

Returns a two-element array containing the beginning and ending offsets of the nth match. n can be a string or symbol to reference a named capture.

m = /(.)(.)(\d+)(\d)/.match("THX1138.")
m.offset(0)      #=> [1, 7]
m.offset(4)      #=> [6, 7]

m = /(?<foo>.)(.)(?<bar>.)/.match("hoge")
p m.offset(:foo) #=> [0, 1]
p m.offset(:bar) #=> [2, 3]
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