ruby - Why is gsub not working whenever GT sign ">" is the first character in regex -

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in text data working on greather sign supposed final character. hence, wanted replace non-conforming occurences that:

some_variable.gsub!(/>([^\n])/, ">\n\\1")

however, keep getting *undefined method gsub!' nil:nilclass (nomethoderror)* error when calling thisgsub!` – if escape character backslash. surprise, changing gt sign not first 1 in regex:

some_variable.gsub!(/(.)>([^\n])/,"\\1\n\\2")

makes work. why? isn't weird gsub return nil?

this has nothing gsub!. error message says try call gsub! on nil, i.e. means some_variable nil when don't expect be. argument gsub!, call gsub! itself, irrelevant, problem some_variable nil when expect string.


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