From: Tino Calancha <tino.calancha@gmail.com>
To: 13122-done@debbugs.gnu.org
Subject: bug#13122: save-excursion not saving point
Date: Sat, 4 May 2019 17:39:11 +0900 (JST) [thread overview]
Message-ID: <alpine.DEB.2.20.1905041728460.30933@calancha-pc.dy.bbexcite.jp> (raw)
In-Reply-To: <87k1ff22gb.fsf@igel.home>
Saving the point, in the general case, would rely on unspecified
behaviour; so I close this bug.
>>>> ;; Following expression should eval as non-nil
>>>> (let ((pos 3))
>>>> (with-temp-buffer
>>>> (insert "abcdef")
>>>> (goto-char pos)
>>>> (save-excursion (transpose-chars 2))
>>>> (= pos (point))))
>>>> => nil
> Since the form inside save-excursion can modify the text before point,
> there is never a guarantee that the numeric value of point stays the
> same. And if point points inside the modified text, it is generally
> unspecified how point moves during the modification.
prev parent reply other threads:[~2019-05-04 8:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-08 6:20 bug#13122: save-excursion not saving point Jyothis V
2012-12-08 11:21 ` martin rudalics
2012-12-21 5:43 ` Chong Yidong
2013-01-07 12:32 ` bug#13122: sort-regexp-fields also seems to not save point Alexander Kjeldaas
2019-04-26 19:53 ` bug#13122: save-excursion not saving point Tino Calancha
2019-04-27 6:57 ` Eli Zaretskii
2019-04-27 7:44 ` Tino Calancha
2019-04-27 9:59 ` Andreas Schwab
2019-05-04 8:39 ` Tino Calancha [this message]
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