99% of vim scripts still use VimScript. I think this happens for a few reasons: - First, as you pointed out, not every user is guaranteed to have your f

99% of vim scripts still use VimScript. I think this happens for a few reasons: - First, as you pointed out, not every user is guaranteed to have your favorite language installed. But they will have VimScript whenever they use vim. - Second, even if a user has your favorite language installed, the version of vim they have might not be compiled with bindings for that language. Only VimScript is guarateed to be compiled in. - Third, VimScript is the only language in vim that's not crippled in some way in respect to functionality. All the other languages it supports have to rely on VimScript itself in order to perform some vim-related functions. In some languages, this makes it so that you might as well be using VimScript to begin with.