awk match regex warning

I am trying to run this awk code on a macOS:

first_argument_open_quote  = match(payload, /['\"]/);

and I am getting the following message:

warning: regexp escape sequence `\"' is not a known regexp operator

I need to match a single quote or a double quote.



Read more here: https://stackoverflow.com/questions/64947888/awk-match-regex-warning

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