Re: Proposing elisp-eval-target for eval-last-sexp and related commands

[Eduardo Ochs <eduardoochs@gmail.com>]

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Have you considered the possibility of implementing a _variant_ of
eval-last-sexp that does what you want? That's what I do in eev... take a
look at the section "0. How to use this" of this tutorial:
http://angg.twu.net/eev-intros/find-lexical-intro.html

  Cheers,
    Eduardo Ochs
    http://angg.twu.net/#eev



On Tue, 17 Aug 2021, 13:41 Psionic K, <psionik@positron.solutions> wrote:

> Proposing to patch the eslip module so that if a buffer-local
> `elisp-eval-target` has been set, `eval-last-sexp` and similar commands
> will execute lisp in the context of another buffer.
>
> The use case is when developing elisp to operate on non-elisp buffers,
> interacting with functionality for other languages such as when using LSP.
>
> This change would bring buffer-based development in line with ielm's
> `ielm-change-working-buffer` behavior.
>
> While the `eval-last-sexp` commands are very ergonomic, there is no way to
> direct them at another buffer without wrapping the last sexp in
> `with-current-buffer`.  Advising deep into `eval-last-sexp` is difficult
> because we must call `set-buffer` after computing the elisp we want to
> evaluate.
>
> With this support available, the users can then update the buffer local in
> shortcut commands for buffer-based development of elisp for other modes.
>
> I intend to develop a patch.  The main difficulty I can identify so far is
> setting the buffer at the correct points so that the setup for evaluation
> continues to occur in the correct context.
>
> --
> Psionic K <psionik@positron.solutions>
> Software Engineer
>
> *Positron Solutions <https://positron.solutions>*
>

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