Re: Proposal: Forwards-Compatibility Library for Emacs

[Arthur Miller]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>
>>> The point here is to not to have any separate namespace, so that you can
>>> just can put core packages into ELPA without doing any rewrites.
>>> What's the concrete risk here?
>>
>> I think in practice it's usually not a problem, but I'd be surprised if
>> there aren't counter examples.
>
> We can just start slowly and see whether any problems occur.
>
>> So for a library that wants to do it in
>> a somewhat predictable/systematic way, I think it's much simple to have
>> all the definitions in a specific namespace (like `compat28-`), and then
>> it's a small matter of have a trivial `compat28.el` library that comes
>> with Emacs-28 which has a bunch of `defalias`.
>
> The main point here is to be able to put things that are in core into
> ELPA, too.  We don't want to have code in core that goes
>
> (compat28-when-let (...)
>   )

Yes please, don't do that! :)