Replaced matched text in Vim with pattern

Question

Here's a minimal example of what I'm trying to do. Start with:

"this")
"that")
[hundreds of lines like this]

End with:

"this",&this)
"that",&that)
[hundreds of lines like this]

I have gotten this far:

g/"\p*"/s/)/[what to put here?]

So it correctly identifies the string that I want to copy. What I'm not sure is how to tell it that I want it to paste that string at the end. I've tried using &, but that matches the ), not the "\p*".

Answer 1

could you just use a search and replace on every line?

:% s/"\([a-z]*\)"/"\1"\,\&\1/g