lookarounds positive negative lookbehind lookahead

Question

after searching all over google for vsvim lookahead or lookbehind and on the wiki I can't seem to figure out how, or if it even supports lookahead or lookbehind (positives or negatives) and how to use them if so.

I've tried a few different syntaxes like \ze \@= (?<=let \w\+)( \(?<=let \w\+\)( that I've seen on vim answers but none of them seem to be working in vs vim for matching (nor substitution)

how do you do lookarounds in VsVim?

Answer 1

For any newcomers, I'll copy the contents of this link here for the future:

http://ssiaf.blogspot.ru/2009/07/negative-lookbehind-in-vim.html

/\(Start\)\@<!Date

This will match the 'Date' in 'EndDate' and 'YesterdaysDate' but will not match 'StartDate'

/Start\(Date\)\@!

will match the 'Start' in 'Starting but not in 'StartDate'

/Start\(Date\)\@=

will match the 'Start' in 'StartDate' but not in 'Starting

/\(Start\)\@<=Date

will match the 'Date' in 'StartDate' but not in 'EndDate' and 'YesterdaysDate'