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bug#12989: 24.3.50; buffer-file-type is not buffer-local
From: |
Kazuhiro Ito |
Subject: |
bug#12989: 24.3.50; buffer-file-type is not buffer-local |
Date: |
Sun, 25 Nov 2012 12:58:01 +0900 |
User-agent: |
Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (Gojō) APEL/10.8 EasyPG/1.0.0 Emacs/24.3.50 (i386-mingw-nt6.1.7601) MULE/6.0 (HANACHIRUSATO) |
When I evaluate below code, Emacs-23 and trunk on Windows return the
different results.
(list
(setq buffer-file-type nil)
(progn
(let ((coding-system-for-read 'no-conversion))
;; Specify non-existing file.
(kill-buffer (find-file-noselect "c:/zzzzzzz")))
buffer-file-type))
-> (nil nil) (Emacs 23)
-> (nil t) (trunk)
And, if buffer-file-type is set to t, many file coding system
detections fail. Docstring says that buffer-file-type autmatically
becomes buffer-local, but that is not true on trunk.
> buffer-file-type is a variable defined in `subr.el'.
> Its value is nil
>
> Documentation:
> Non-nil if the visited file is a binary file.
> This variable is meaningful on MS-DOG and Windows NT.
> On those systems, it is automatically local in every buffer.
> On other systems, this variable is normally always nil.
Additionally, there is typo in docsstring of buffer-file-type.
> This variable is meaningful on MS-DOG and Windows NT.
~~~~~~
--
Kazuhiro Ito
- bug#12989: 24.3.50; buffer-file-type is not buffer-local,
Kazuhiro Ito <=