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Re: text editors

> Sorry not.  While Elisp is a Lisp dialect, therefore is a language that
> has been formally proved to be equivalent to turing-machine, that is
> not certain for vimscript.

Vimscript may not be as elegant and powerful as Elisp, but there is no
doubt that it is Turing-complete (pretty much any language with a `while`
loop and some kind of dynamic allocation is Turing-complete, so it's
a pretty low bar).
It's a full-blown programming language.