From: Eli Zaretskii <eliz@gnu.org>
To: dalanicolai <dalanicolai@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: displaying margins leads to Emacs hanging
Date: Sat, 25 Feb 2023 12:51:28 +0200 [thread overview]
Message-ID: <83bklikogf.fsf@gnu.org> (raw)
In-Reply-To: <CACJP=3ntnfYcaSZmOR5HTa_+mE3N9cD_16xQOm5nGcvgn+mdRw@mail.gmail.com> (message from dalanicolai on Fri, 24 Feb 2023 21:53:35 +0100)
> From: dalanicolai <dalanicolai@gmail.com>
> Date: Fri, 24 Feb 2023 21:53:35 +0100
> Cc: emacs-devel@gnu.org
>
> B.t.w if someone want to have a look, I'll attach a smaller file here where
> I have just removed about 200 pages of the book text data, so that it is
> the file is much smaller, but there is still enough date to clearly show the
> 'undesired' behavior.
>
> So now, Emacs will not 'hang', but there will still be a clear difference in time it
> takes to update the buffer (between when window margins are displayed,
> and when they are not).
Your code overwhelms redisplay with an inconceivably huge number of
overlays that are left from the previous iteration. This one-line
change makes the code work reasonably fast:
(defun baleen-update2 ()
;; (let ((query (minibuffer-contents)))
;; (with-current-buffer (get-buffer-create "*baleen*")
;; (erase-buffer)
;; (baleen-render (baleen-filter test2 query)))))
(let* ((query (minibuffer-contents))
(query-length (length query)))
(if (> (length previous-query) query-length)
(with-current-buffer (get-buffer-create "*baleen*")
(erase-buffer)
(baleen-render (cdr (alist-get query baleen-results nil nil #'string=))))
(let* ((parent-results (unless (< query-length 2)
(alist-get (substring query 0 -1) baleen-results nil nil #'string=)))
(current-results (if parent-results
(baleen-filter parent-results query)
(unless (string-empty-p query) (baleen-filter test2 query)))))
(when current-results
(with-current-buffer (get-buffer-create "*baleen*")
(remove-overlays) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
(erase-buffer)
(baleen-render current-results))
(cl-pushnew (cons query current-results) baleen-results :test #'string= :key #'car))
(setq previous-query query)))))
next prev parent reply other threads:[~2023-02-25 10:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-24 19:29 displaying margins leads to Emacs hanging dalanicolai
2023-02-24 19:41 ` Eli Zaretskii
2023-02-24 20:26 ` dalanicolai
2023-02-24 20:29 ` Eli Zaretskii
2023-02-24 20:41 ` dalanicolai
2023-02-24 20:53 ` dalanicolai
2023-02-24 21:19 ` dalanicolai
2023-02-24 21:43 ` dalanicolai
2023-02-25 10:51 ` Eli Zaretskii [this message]
2023-02-25 13:17 ` dalanicolai
2023-02-25 13:42 ` Eli Zaretskii
2023-03-06 22:51 ` dalanicolai
2023-02-24 21:25 ` Eli Zaretskii
2023-02-24 21:41 ` dalanicolai
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