go - Using positive-lookahead (?=regex) with re2

Question

Since I'm a bit new with re2, I'm trying to figure out how to use positive-lookahead (?=regex) like JS, C++ or any PCRE style in Go.

Here's some examples of what I'm looking for.

JS:

'foo bar baz'.match(/^[sS]+?(?=baz|$)/);

Python:

re.match('^[sS]+?(?=baz|$)', 'foo bar baz')

• Note: both examples match 'foo bar '

Thanks a lot.

Answer 1

Waitting for answers