bug#81150: 31.0.60; eglot: performance issue with markdown-ts-mode

Eli Zaretskii <[email protected]> writes:

>> [...]
>
> I think any such improvements are better developed on the master
> branch.


Hi everyone,

I'd like to follow up on this issue from the perspective of current
Emacs master (Emacs 32 to be).

We recently fixed bug#81334 on master. That fix made rendering markdown
buffers with many local parsers significantly faster, which is exactly
the path Eglot takes when rendering documentation.

I took the test_standalone.py file from this report and opened it with:


  emacs -Q \
    test_standalone.py \
    --eval "(setq eglot-documentation-renderer 'markdown-ts-view-mode)"


With the buffer open, `M-x eglot RET` started the LSP server, as the
recipe in this report describes, and then moved the cursor through the
call sites where the documentation is rendered with
`markdown-ts-view-mode`.

On a couple of runs on two different machines I could not notice any lag
anymore.

To be clear, this is about master only. Nothing here asks to revisit
what was decided for emacs-31, where the modes stay experimental and
opt-in.

Romain, could you please give this recipe another try on master and tell
us what you see?

-- 
Rahul Martim Juliato