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Re: Shorthands have landed on master

From: Philip Kaludercic
Subject: Re: Shorthands have landed on master
Date: Tue, 28 Sep 2021 07:15:18 +0000

João Távora <joaotavora@gmail.com> writes:

> On Mon, Sep 27, 2021 at 11:40 PM Philip Kaludercic <philipk@posteo.net> wrote:
>> João Távora <joaotavora@gmail.com> writes:
>> > Hello all.
>> >
>> > Anyway, as you may have noticed, "Shorthands" have landed on master.
>> > Please check out the NEWS entry and the manual section on "Shorthands".
>> >
>> > For the impatient, I leave with with a tiny animated gif.
>> From what I see, elisp-shorthands only allows a shorter prefix to be
>> mapped to a longer prefix, right? So this doesn't allow me to use cl-lib
>> without the cl- prefix,
> You need to have _some_ prefix.  It cannot be of 0 length.  Best
> you can do is '-loop' and '-destructuring-bind', for example.
> In fact, I lie.  You _can_ map 'loop' to 'cl-loop' explicitly.
> 'loop' is the shorthand.  'cl-loop' is still the symbol.
> But you have to do it symbol by symbol.
> That's because I've purposely turned off "freer" renamings in
> favor of prefixes, simplicity and read speed.  But they are
> not impossible.

I see. Do you think it would make sense to use predefined shorthand
groups, in case someone *would* want to use cl-lib without the prefix?

>> or remove the compat-- prefix from compatibility
>> functions?
> It's too late in the day for me to understand what you mean by
> "remove" here :-)  You must first understand what shorthands are:
> they are merely file-local aliases to symbols which keep their
> full names.

This was in reference to the compat.el discussion from a few days
ago. It was mentioned that shorthands might provide an alternative to
aliasing function definitions. But this doesn't make much sense, if a
prefix has to be used, short or long: I want to call
(macroexp-file-name), not (co-macroexp-file-name), (~macroexp-file-name)
or (compat--macroexp-file-name) to provide transparent compatibility.

> Does this help in answering your question?

After trying out

     ;; elisp-shorthands: (("" . "cl-"))

I saw what went wrong and I understand why. On that topic, I think the
behaviour was inadequate, because a lot of unrelated commands also
broke that might become annoying.

> If it doesn't, provide a toy example with files and code in it,
> and illustrate clearly what you would like to be able to write,
> but can't (right now) Then maybe I can say if shorthands can
> help you.
> João

        Philip Kaludercic

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