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Certain numbers of special forms cause changing behaviour on function ca
From: |
Wilfred Hughes |
Subject: |
Certain numbers of special forms cause changing behaviour on function calls in --batch |
Date: |
Sun, 26 Jun 2016 17:39:39 +0100 |
Hi all
I've bumped into an issue where the behaviour of Emacs changes
depending on the number of special forms.
(defun call-fn-in-let (unused)
(let (xx)
(let (yy)
(split-string "foo" "bar" nil))))
(with-temp-buffer
(insert "foofoofoo\nbarbarbar")
(let ((dd (let (aa)
(let (bb)
(let (cc)
(progn (call-fn-in-let nil)))))))
(let (ee)
(save-excursion
(goto-char (point-min))
(if t
(progn
(move-end-of-line nil)
(message "point is: %s" (point))))))))
In the above code, running it interactively in Emacs with M-x
eval-buffer gives: 'point is: 10'. This is correct.
However, running it in --batch gives:
$ emacs -batch -l ~/projects/pyimport/nasty.el
point is: 20
This is incorrect: for some reason move-end-of-line is behaving
differently here. Removing any of the extra special forms (e.g. the
redundant lets) fixes it.
I can reproduce this on 24.5, but not on HEAD. However,
move-end-of-line has not changed between 24.5 and HEAD.
Is/was this a bug in the elisp interpreter?
Wilfred
- Certain numbers of special forms cause changing behaviour on function calls in --batch,
Wilfred Hughes <=
- Re: Certain numbers of special forms cause changing behaviour on function calls in --batch, Michael Heerdegen, 2016/06/28
- Re: Certain numbers of special forms cause changing behaviour on function calls in --batch, Eli Zaretskii, 2016/06/29
- Re: Certain numbers of special forms cause changing behaviour on function calls in --batch, Michael Heerdegen, 2016/06/29
- Re: Certain numbers of special forms cause changing behaviour on function calls in --batch, Eli Zaretskii, 2016/06/29
- Re: Certain numbers of special forms cause changing behaviour on function calls in --batch, Michael Heerdegen, 2016/06/30
- Re: Certain numbers of special forms cause changing behaviour on function calls in --batch, Eli Zaretskii, 2016/06/30
- Re: Certain numbers of special forms cause changing behaviour on function calls in --batch, Michael Heerdegen, 2016/06/30
Re: Certain numbers of special forms cause changing behaviour on function calls in --batch, Andreas Röhler, 2016/06/30