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bug#12492: Acknowledgement (24.2.50; Open vc-dir buffer easier and faste

From: Dmitry Gutov
Subject: bug#12492: Acknowledgement (24.2.50; Open vc-dir buffer easier and faster)
Date: Wed, 4 Mar 2020 14:05:27 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0

On 04.03.2020 1:19, Juri Linkov wrote:
project-find-regexp is both faster in most situations, works remotely, and
provides a decent UI.

project-find-regexp is not asynchronous whereas vc-git-grep is.

There's no project-agnostic asynchronous option on the table now.

UI of project-find-regexp is non-standard.  A more familiar UI
would be like in occur, for example, as used by noccur-project.

It is standard enough, Xref commands use it. And they have both default key bindings and menu items.

noccur-project like this naive implementation? https://nicolas.petton.fr/blog/mutli-occur-on-projects.html

How long does it take to search the Emacs project for an arbitrary string on your machine?

Not to mention the unfortunate side-effect of having to visit 4000 buffers.

If you have a better implementation in mind, I will certainly try it.

BTW, I wonder how such project-isearch using multi-isearch-files would work
in a non-toy project with a sufficiently-rare input.

Even if we take the Emacs project itself, loading all 4000 files into
Emacs's memory to search through them all is likely to take a lot of time.

No problem at all - trying on the Emacs project:

   (multi-isearch-files (project-files (project-current t)))

is like project-search, but with more convenient UI:
it's easier to type C-s to go to the next occurrence than
to invoke the command M-x fileloop-continue that has no keybinding.

"like project-search" also implies "to take a lot of time", that's where I made that conclusion from. How long does it take for the UI to say "no matches"?

The UI is probably better (the main thing I like about this idea), but the downside is opening several buffers with intermediate matches for incomplete input (while you're still typing the search string). Though I don't know how serious of a problem that is.

And when I try this, I'm getting messages about uncompressing files, and prompts about local variables, which I can't answer.

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