--- Begin Message ---
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Subject: |
26.2; save-buffer silently fails in winNT if buffer name has forbidden chars |
|
Date: |
Sat, 27 Apr 2019 18:36:14 +0900 |
emacs -Q
;; Do the following recipe in an empty directory
C-x b schrodinger:cat RET
Miauuuu!!!
C-x C-s RET
;; A message in the minibuffer confirms the name of the file writen to disk.
;; Apparentely, the base name of such a file matches the buffer name.
M-: (file-exists-p buffer-file-name)
=> t
M-: (string= (file-name-nondirectory buffer-file-name) (buffer-name))
=> t
;; In fact, no file matches the buffer name in the directory
M-: (directory-files default-directory nil (buffer-name))
=> nil
;; There is an _empty_ file with name, the buffer name upto the colon
M-: (directory-files default-directory nil "schrod")
=> ("schrodinger")
M-: (with-temp-buffer
(insert-file-contents "schrodinger")
(buffer-size))
=> 0
--8<-----------------------------cut here---------------start------------->8---
diff --git a/lisp/files.el b/lisp/files.el
index c05d70a00e..93600d2edb 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -5106,6 +5106,9 @@ basic-save-buffer
(expand-file-name
(read-file-name "File to save in: "
nil (expand-file-name
(buffer-name))))))
+ (when (and (eq 'windows-nt system-type)
+ (string-match-p "[:*?\"<>]"
(file-name-nondirectory filename)))
+ (error "A file name cannot contain any of the following
characters: :*?\"<>"))
(if (file-exists-p filename)
(if (file-directory-p filename)
;; Signal an error if the user specified the name
of an
--8<-----------------------------cut here---------------end--------------->8---
In GNU Emacs 26.2 (build 1, x86_64-w64-mingw32)
of 2019-04-13 built on CIRROCUMULUS
Repository revision: fd1b34bfba8f3f6298df47c8e10b61530426f749
Windowing system distributor 'Microsoft Corp.', version 10.0.17763
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Configured using:
'configure --without-dbus --host=x86_64-w64-mingw32
--without-compress-install 'CFLAGS=-O2 -static -g3''
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS THREADS LCMS2
Important settings:
value of $LANG: ENU
locale-coding-system: cp1252
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message rmc puny seq byte-opt gv
bytecomp byte-compile cconv cl-loaddefs cl-lib dired dired-loaddefs
format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg
epg-config gnus-util rmail rmail-loaddefs mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils elec-pair time-date
mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win
w32-vars term/common-win tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode elisp-mode lisp-mode
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chinese composite charscript charprop case-table epa-hook jka-cmpr-hook
help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote threads w32notify w32 lcms2 multi-tty make-network-process
emacs)
Memory information:
((conses 16 97250 8162)
(symbols 48 20206 1)
(miscs 40 40 94)
(strings 32 29729 1209)
(string-bytes 1 773709)
(vectors 16 14066)
(vector-slots 8 496277 12810)
(floats 8 51 284)
(intervals 56 250 17)
(buffers 992 11))
--- End Message ---
--- Begin Message ---
|
Subject: |
Re: bug#35448: 26.2; save-buffer silently fails in winNT if buffer name has forbidden chars |
|
Date: |
Sat, 04 May 2019 17:44:18 +0900 |
|
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Eli Zaretskii <address@hidden> writes:
I saw the cat meow.
Since this is a feature I wasn't aware of, not a bug, then I am closing this
bug.
>> > https://en.wikipedia.org/wiki/NTFS#Alternate_data_streams_(ADS)
>> > http://www.flexhex.com/docs/articles/alternate-streams.phtml
>>
>> And to see that your cat's meow is not lost, try this:
>>
>> C-u M-! streams schrodinger RET
>
> Even better, kill the buffer and then "C-x C-f schrodinger:cat RET".
> (A program such as 'cat' will also show the text.)
--- End Message ---