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Better way to require with shorthands/renamed symbols

From: Stefan Kangas
Subject: Better way to require with shorthands/renamed symbols
Date: Mon, 27 Sep 2021 04:10:49 -0700

joaotavora@gmail.com (João Távora) writes:

> +(defun t-reverse-lines (s) (string-join (reverse (sns-lines s)) "\n")
> +
> +;; Local Variables:
> +;; elisp-shorthands: (("t-" . "my-tricks-")
> +;;                    ("sns-" . "some-nice-string-utils-"))
> +;; End:

This is really nice and straight-forward, thanks!

I see one problem here.  It basically splits the require up in two:
I need to look both at the start and at the end of the file to
understand what is going on.

In the previous discussion, Adam Porter suggested this:[1]

    (shorthand-require 'magnar-string :with "^s-" :as "magnar-string-")

I like that proposal a lot, but it's a bit too verbose for my taste.
It also seems to flip the :as and :with from what I would expect (in
Python, "import x as y" means that x is available "as" y in this file).

In my ideal world, we should be able to just say simply:

    (require 'magnar-string :as "s-")

There could be a variable inside magnar-string.el that gives us the
rest, e.g.:

    elisp-default-import-prefix: "^magnar-string-"


[1]  https://lists.gnu.org/r/emacs-devel/2020-05/msg01754.html

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