Say I have a string : "hEY "

I want to convert it to "Hey "

string.gsub!(/([a-z])([A-Z]+ )/, '\1'.upcase)

That is the idea I have, but it seems like the upcase method does nothing when I use it within the gsub method. Why is that?

EDIT: I came up with this method:

string.gsub!(/([a-z])([A-Z]+ )/) { |str| str.downcase!.capitalize! }

Is there a way to do this within the regex though? I don't really understand the '\1' '\2' thing. Is that backreferencing? How does that work

ruby regex
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