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bug#57669: 29.0.50; C-n, C-p off under long lines
From: |
dick |
Subject: |
bug#57669: 29.0.50; C-n, C-p off under long lines |
Date: |
Fri, 09 Sep 2022 09:08:46 -0400 |
User-agent: |
Gnus/5.14 (Gnus v5.14) Commercial/29.0.50 (gnu/linux) |
> because before the change Emacs couldn't cope with such files at all
Oh, I know what you're trying to do. After all Commercial Emacs's
original attempt at "making the best of a bad situation" was the impetus
for your own poke at the pig.
When 29 goes mainstream, just be prepared to auto-reply "Does your file
have a long line?" when feckless users ask, "Why did C-n go to a weird
column?"
And to be clear, you're going from "ineffable" performance to just
"underwhelming." As of cb036a7 you still need find-file-literally for
some semblance of respectability.
OUTPUT:
Under long-line-threshold=nil find-file 62s
Under long-line-threshold=10000 find-file 27s
Under long-line-threshold=nil find-file-literally 30s
Under long-line-threshold=10000 find-file-literally 4s
INPUT: C-n through file of alternating short and long lines.
src/emacs -Q -l cl-lib --eval " \
(let ((long-line-threshold 10000) \
(file (make-temp-file \"baz\"))) \
(cl-assert (= 80 (window-width)) t) \
(with-temp-file file \
(dotimes (i 100) \
(insert (make-string (if (zerop (% i 2)) \
200 \
(1+ long-line-threshold)) \
?x) \"\n\"))) \
(dolist (config (list (cons nil (function find-file)) \
(cons long-line-threshold (function find-file))
\
(cons nil (function find-file-literally)) \
(cons long-line-threshold (function
find-file-literally)))) \
(let* ((long-line-threshold (car config)) \
(note (format \"long-line-threshold=%s %s\" \
(car config) (cdr config))) \
(buffer (funcall (cdr config) file))) \
(with-current-buffer buffer \
(show-paren-mode -1) \
(goto-char (point-min)) \
(princ (format \"Under %s %ds\n\" note \
(fround (car (benchmark-run \
(while (condition-case nil \
(prog1 t (call-interactively \
(function next-line)) \
(redisplay)) \
(end-of-buffer))))))) \
(function external-debugging-output))) \
(kill-buffer buffer))) \
(kill-emacs))"
- bug#57669: 29.0.50; C-n, C-p off under long lines, dick . r . chiang, 2022/09/08
- bug#57669: 29.0.50; C-n, C-p off under long lines, Gregory Heytings, 2022/09/08
- bug#57669: 29.0.50; C-n, C-p off under long lines, Eli Zaretskii, 2022/09/08
- bug#57669: 29.0.50; C-n, C-p off under long lines, dick, 2022/09/08
- bug#57669: 29.0.50; C-n, C-p off under long lines, Gregory Heytings, 2022/09/08
- bug#57669: 29.0.50; C-n, C-p off under long lines, dick, 2022/09/08
- bug#57669: 29.0.50; C-n, C-p off under long lines, Gregory Heytings, 2022/09/08
- bug#57669: 29.0.50; C-n, C-p off under long lines, Eli Zaretskii, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines,
dick <=
- bug#57669: 29.0.50; C-n, C-p off under long lines, Gregory Heytings, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, dick, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, Gregory Heytings, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, dick, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, Gregory Heytings, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, dick, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, Gregory Heytings, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, dick, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, Gregory Heytings, 2022/09/09
- bug#57669: 29.0.50; C-n, C-p off under long lines, Eli Zaretskii, 2022/09/09