How to find replace using regex groups in vim

Question

I'm replacing all the inline gist snippets w/ a div to load them in a non blocking way. To modify all the legacy articles that have the following

<script src='https://gist.github.com/1234.js?file=gistfile1.sh'></script>

I need to replace it with the following instead

<div data-gist=1234><a href='http://gist.github.com/1234'>gistfile1.m</a></div>

So far what I'm trying (vim newb here) -doesn't seem to work

:%s/<script src='https:\/\/gist.github.com\/(d+).js?file=gistfile1.sh'><\/script>/<div data-gist={1}><a href='http://gist.github.com/{1}'>gistfile1.m</a></div>//g

Answer 1

I got it to work with this:

:%s!<script src='https://gist.github.com/\(\d\+\).js?file=gistfile1.sh'></script>!<div data-gist=\1><a href='http://gist.github.com/\1'>gistfile1.m</a></div>!g 

Couple things to note:

1. I used ! instead of / as seperator to avoid having to escape path slashes
2. You need to escape (, d, +, and ) in your attempt.
3. You had extra / at the very end.
4. To insert the match group, use \1 instead of {1}