From: Lars Ingebrigtsen <larsi@gnus.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 34720@debbugs.gnu.org, dunni@gnu.org
Subject: bug#34720: 26.1; Reverting a GPG buffer moves all markers to the end of the file
Date: Tue, 27 Aug 2019 11:05:33 +0200 [thread overview]
Message-ID: <877e6z2d2a.fsf@gnus.org> (raw)
In-Reply-To: <83imqjdmqb.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 27 Aug 2019 11:41:16 +0300")
Eli Zaretskii <eliz@gnu.org> writes:
> Must be sheer luck. Or maybe I'm missing something, but you will have
> to show me the code that moves this test marker to convince me. (I
> don't have the necessary software installed to repeat the recipe myself.)
(progn
(find-file "/tmp/foo.txt")
(kill-buffer (current-buffer))
(when (file-exists-p "/tmp/foo.txt")
(delete-file "/tmp/foo.txt"))
(find-file "/tmp/foo.txt")
(insert "Test line.")
(setq test-marker1 (make-marker))
(move-marker test-marker1 4)
(setq test-marker2 (make-marker))
(move-marker test-marker2 5)
(save-buffer t)
(shell-command "echo new >> /tmp/foo.txt")
(revert-buffer nil t)
(list test-marker1 test-marker2))
=> (#<marker at 4 in foo.txt> #<marker at 5 in foo.txt>)
So the markers seem to be restored on `revert-buffer'?
The reason this doesn't happen in the epa case seems to be a bug in
Finsert_file_contents: When there's an external handler, it skips
directly to handled: and neglects to do the same_at_start computation,
which leaves that at point-min and restore_window_points ignores all
markers that have values that are larger than same_at_start.
If I'm reading the code right.
If the new text doesn't match the old text, the markers are not
restored:
(progn
(find-file "/tmp/foo.txt")
(kill-buffer (current-buffer))
(when (file-exists-p "/tmp/foo.txt")
(delete-file "/tmp/foo.txt"))
(find-file "/tmp/foo.txt")
(insert "Test line.")
(setq test-marker1 (make-marker))
(move-marker test-marker1 4)
(setq test-marker2 (make-marker))
(move-marker test-marker2 5)
(save-buffer t)
(shell-command "echo Here is a new text > /tmp/foo.txt")
(revert-buffer nil t)
(list test-marker1 test-marker2))
(#<marker at 1 in foo.txt> #<marker at 1 in foo.txt>)
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
next prev parent reply other threads:[~2019-08-27 9:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-03 15:28 bug#34720: 26.1; Reverting a GPG buffer moves all markers to the end of the file Ian Dunn
2019-07-09 16:33 ` Lars Ingebrigtsen
2019-08-26 7:20 ` Lars Ingebrigtsen
2019-08-26 7:59 ` Eli Zaretskii
2019-08-26 8:14 ` Lars Ingebrigtsen
2019-08-26 9:42 ` Eli Zaretskii
2019-08-27 7:14 ` Lars Ingebrigtsen
2019-08-27 8:00 ` Eli Zaretskii
2019-08-27 8:23 ` Lars Ingebrigtsen
2019-08-27 8:41 ` Eli Zaretskii
2019-08-27 9:05 ` Lars Ingebrigtsen [this message]
2019-08-27 9:17 ` Eli Zaretskii
2019-08-27 9:15 ` Lars Ingebrigtsen
2019-08-27 10:20 ` Eli Zaretskii
2019-08-30 9:48 ` Lars Ingebrigtsen
2019-08-30 10:21 ` Lars Ingebrigtsen
2019-08-30 12:19 ` Eli Zaretskii
2019-08-27 8:37 ` Lars Ingebrigtsen
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