From: balducci@units.it
To: 63586@debbugs.gnu.org
Subject: bug#63586: 29.x: dotimes (possible) problem
Date: Fri, 19 May 2023 17:10:44 +0200 [thread overview]
Message-ID: <4450.1684509068@dschgrazlin2.units.it> (raw)
hello
the dotimes macro behaves differently in 29.x with respect to previous
versions
Basically: changing the value of the loop variable in the body of
dotimes does not seem to have any effect, where for versions <29.x it
used to.
Here is a minimal stretch of dummy code clarifying the problem I'm
reporting.
emacs-29.0.91 (or 29.0.90)
==========================
(dotimes (ii 10)
(insert (format "%2d " ii))
(when (= ii 4)(setq ii 11))
)
==> 0 1 2 3 4 5 6 7 8 9
emacs-28.2 (or any version <29.x)
=================================
(dotimes (ii 10)
(insert (format "%2d " ii))
(when (= ii 4)(setq ii 11))
)
==> 0 1 2 3 4
The ability to jump out of the loop by pushing the loop variable over
the upper limit is something that I happen to use in my scripts, so
29.x breaks them somehow
Of course, there are very many other equivalent ways to
accomplish the same result, but I don't see why this one
shouldn't be supported (any longer)
Is the changed behavior intentional? Am I missing some blatant point here?
AFAICS, changing the value of the loop variable from inside the loop
body is supported by any other language which I know about
thank you very much in advance for any hint/feedback
ciao
-gabriele
next reply other threads:[~2023-05-19 15:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-19 15:10 balducci [this message]
2023-05-19 15:54 ` bug#63586: 29.x: dotimes (possible) problem Mattias Engdegård
2023-05-19 16:00 ` Eli Zaretskii
2023-05-19 17:29 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-05-19 17:33 ` Drew Adams
2023-05-19 17:47 ` Eli Zaretskii
2023-05-20 8:56 ` Mattias Engdegård
2023-09-06 20:10 ` bug#63588: " Stefan Kangas
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