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bug#6187: Wrong type argument: number-of-marker-p, nil
From: |
Christophe TROESTLER |
Subject: |
bug#6187: Wrong type argument: number-of-marker-p, nil |
Date: |
Sat, 13 Aug 2011 00:34:48 +0200 (CEST) |
I redefined select-safe-coding-system-interactively to try to track
the bug and it confirms that the variable `unsafe', AFTER the “(setq
unsafe …”, has value ((iso-latin-1-unix)) ― which then returns (nil)
when processed with
(mapcar #'(lambda (x) (car (cadr x))) unsafe)
The correct value for `unsafe' is (iso-latin-1-unix (1 . 7868))
Note that the bug is not present when Emacs starts, it only shows up
after some time. My wild guess is that somehow regions are processed
incorrectly ― I have some region issues with other Emacs packages too.
The backtrace :
Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
min(nil)
apply(min nil)
(goto-char (apply (quote min) (mapcar ... unsafe)))
(progn (pop-to-buffer bufname) (goto-char (apply ... ...)))
(if (and unsafe (not ...)) (progn (pop-to-buffer bufname) (goto-char ...)))
(when (and unsafe (not ...)) (pop-to-buffer bufname) (goto-char (apply ...
...)))
(save-excursion (when (and unsafe ...) (pop-to-buffer bufname) (goto-char
...)) (with-output-to-temp-buffer "*Warning*" (with-current-buffer
standard-output ... ... ...)) (setq coding-system (read-coding-system ...
default)) (setq last-coding-system-specified coding-system))
(let ((window-configuration ...) (bufname ...) coding-system) (save-excursion
(when ... ... ...) (with-output-to-temp-buffer "*Warning*" ...) (setq
coding-system ...) (setq last-coding-system-specified coding-system))
(kill-buffer "*Warning*") (set-window-configuration window-configuration)
coding-system)
select-safe-coding-system-interactively(1 3 (utf-8 viscii gb18030 utf-7
utf-16 utf-16be-with-signature utf-16le-with-signature utf-16be utf-16le
x-ctext iso-2022-7bit utf-8-auto utf-8-with-signature emacs-mule raw-text
iso-2022-8bit-ss2 iso-2022-7bit-lock vietnamese-tcvn vietnamese-viqr
vietnamese-vscii utf-7-imap utf-8-emacs no-conversion
compound-text-with-extensions ctext-no-compositions iso-2022-7bit-ss2)
(iso-latin-1-unix) nil utf-8)
select-safe-coding-system(1 3 iso-latin-1-unix nil "/tmp/a.txt")
write-region(nil nil "/tmp/a.txt" nil t "/tmp/a.txt")
basic-save-buffer-2()
basic-save-buffer-1()
basic-save-buffer()
save-buffer(1)
call-interactively(save-buffer nil nil)