Re: erc-ircfmt.el: Transient-based formatting for Erc (Emacs 29+)

"J.P." <[email protected]> writes:

> FWIW, when `fill-wrap' is active, it's supposed to remove select
> properties via `erc-stamp--display-margin-mode':
>
>   (add-function :filter-return (local 'filter-buffer-substring-function)
>                  #'erc--remove-text-properties)
>
> Perhaps we could promote that to baseline `erc-mode' copying behavior,
> and then allow various modules to extend it somehow, e.g., by overriding
> `erc--own-property-names' locally. For stripping face props when yanking
> into the prompt area, maybe see `yank-transform-functions' (29+).

Thanks for the idea with `yank-transform-functions'. It's pretty neat,
and I managed to write exactly what I wanted with it (See
attachments). It's a bit rough around the edges, but it works.

>> It's possible to have it fallback onto a normal prefixed command tree if
>> transient.el is not available. But I'm wondering what's the support
>> matrix for Erc vis-a-vis Emacs releases. Does Erc target the last 3
>> major releases? (i.e. 27.x, 28.x, 29.x), or is >=27 a fixed constraint?
>
> Last three, AFAIK. But when it comes to 27 in particular there's a sunk
> cost component at play in terms of attention paid, at least in 5.6. But
> I don't think a fallback is really necessary for new features, in
> general: users on older Emacsen should probably expect a somewhat
> degraded experience.

In that case, I'll just add a simple feature gate that will only enable
the transient prefix if transient.el is available. Probably will do the
same for the yanking extension with `yank-transform-functions' as well.

It would probably make sense to merge the two extensions into a single
Erc module. I will consider doing that after some more hands-on
usage/testing. I'm now close to a point where Erc can be customized to
behave exactly as I want - many thanks for keeping the client so
customizable/hackable :)

Cheers,
-A.