Conditional replace in vim

Question

I'd like do use vim search-and-replace to replace all " with ' and vice-versa. Is there a way to achieve this in one step? I'm thinking of something like this:

:s/\("\|'\)/\1=="?':"/

Where of course the \1=="?':"-part is something that works in vim.

Thanks in advance!

Answer 1

Another approach (that's more suited to scripting) is to use the built-in tr() function. To apply it on the buffer, getline() / setline() is used:

:call setline('.', tr(getline('.'), "'\"", "\"'"))

Answer 2

power of unix tools ;)

:%!tr "'\"" "\"'"