GNU bug report logs - #9607
incorrect behavior with "automatic-hscroll-mode nil" in ncurses/vt220 text operation; wrong in 23 but ok in 22.1

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Package: emacs;

Reported by: David Lawless <david_lawless <at> flumedata.com>

Date: Mon, 26 Sep 2011 21:24:02 UTC

Severity: normal

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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From: Glenn Morris <rgm <at> gnu.org>
To: 9607 <at> debbugs.gnu.org
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, David Lawless <david_lawless <at> flumedata.com>
Subject: bug#9607: incorrect behavior with "auto-hscroll-mode nil" in ncurses/vt220 text operation; wrong in 23 but ok in 22.1
Date: Tue, 27 Sep 2011 00:01:50 -0400

Present in 23.2 to 24.0.90 inclusive. Recipe:

emacs -Q --eval '(setq auto-hscroll-mode nil)'

Evaluate:
(dotimes (j 5)
  (insert "\n")
  (dotimes (i 10)
    (insert "0123456890 ")))

Put point at start of first line of digits.
M-x scroll-left RET y
;; Window now scrolled to right-hand end of lines
Down arrow  ; first time is ok
Down arrow
  -> second time window scrolls back to left-hand end of line


(setq line-move-visual nil)

avoids the problem.

I guess it's related to the 2009-07 changes to line-move-visual for hscroll.
This bug report was last modified 13 years and 237 days ago.

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