GNU bug report logs - #61373
Eglot patch: add customization to prefer plaintext for :hover

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: JD Smith <jdtsmith <at> gmail.com>
Subject: bug#61373: closed (Re: bug#61373: Eglot patch: add customization
 to prefer plaintext for :hover)
Date: Thu, 23 Mar 2023 21:24:02 +0000

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Your bug report

#61373: Eglot patch: add customization to prefer plaintext for :hover

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 61373 <at> debbugs.gnu.org.

-- 
61373: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=61373
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: João Távora <joaotavora <at> gmail.com>
To: JD Smith <jdtsmith <at> gmail.com>
Cc: 61373-done <at> debbugs.gnu.org
Subject: Re: bug#61373: Eglot patch: add customization to prefer plaintext
 for :hover
Date: Thu, 23 Mar 2023 21:25:26 +0000

JD Smith <jdtsmith <at> gmail.com> writes:

> Some LSP servers badly mangle their responses to :hover into markdown that gfm-viewmode cannot render.  See this
> discussion, for example. 
>
> The attached patch adds a new custom option `eglot-prefer-plaintext’ which configures the server to use plaintext for :
> hover responses, even if Emacs could in principle handle markdown.  Unfortunately, the popular Python LSP server in
> question (pyright) is not interested in improvement to its generated markdown (since it "works in VS-Code”).  Luckily the
> plaintext docstrings of most packages are very nicely formatted.

Hi,

I've pushed your patch to master:

commit 4566a0c6b825a18e6c065da0543b8b942b7db8df (HEAD -> master, origin/master, origin/HEAD)
Author: JD Smith <jdtsmith <at> gmail.com>
Date:   Thu Mar 23 17:43:52 2023 +0000

    Eglot: let user opt-in to plaintext LSP docs (bug#61373)

    * lisp/progmodes/eglot.el
    (eglot-prefer-plaintext): New variable.
    (eglot-client-capabilities): Use it.

    Copyright-paperwork-exempt: yes

I opted noted not to describe eglot-prefer-plaintext in the manual,
because I think this option should ultimately live in ElDoc, not in
Eglot.  Properly supporting markdown rendering in Eldoc is hard though,
so there's little reason not to push this simple workaround.

Closing this bug.  See also bug#61072 and bug#62029 for more discussion.

João

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From: JD Smith <jdtsmith <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Eglot patch: add customization to prefer plaintext for :hover
Date: Wed, 8 Feb 2023 16:33:16 -0500

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Some LSP servers badly mangle their responses to :hover into markdown that gfm-viewmode cannot render.  See this discussion <https://github.com/joaotavora/eglot/discussions/1039>, for example. 

The attached patch adds a new custom option `eglot-prefer-plaintext’ which configures the server to use plaintext for :hover responses, even if Emacs could in principle handle markdown.  Unfortunately, the popular Python LSP server in question (pyright) is not interested in improvement to its generated markdown (since it "works in VS-Code”).  Luckily the plaintext docstrings of most packages are very nicely formatted. 

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[eglot_plaintext.patch (application/octet-stream, attachment)]

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