* bug#13197: 24.3.50; org-odt.el code that kills modified buffers
@ 2012-12-15 22:35 Drew Adams
2012-12-16 4:37 ` Jambunathan K
0 siblings, 1 reply; 4+ messages in thread
From: Drew Adams @ 2012-12-15 22:35 UTC (permalink / raw)
To: 13197
This is a question, but it might also be a bug report regarding the code
cited.
IIUC, `set-buffer-modified-p' (and also `restore-buffer-modified-p',
which is a lousy name BTW) always acts on the current buffer. There is
no way to tell it which buffer to act on, other than, say, using
`with-current-buffer'.
I use `find-file-noselect' over a large set of files, and at a later
point I kill many such visited-file buffers. But even just
`find-file-no-select' can cause visiting to modify some buffers. So
when I go to kill them I need to prevent the user being queried about
killing a modified buffer.
I was grepping some source files to see how other code handles this kind
of thing, and I came across this in org-odt.el (in
`org-odt-cleanup-xml-buffers'):
(mapc (lambda (file)
(let ((buf (find-file-noselect
(expand-file-name file org-odt-zip-dir) t)))
(when (buffer-name buf)
(set-buffer-modified-p nil)
(kill-buffer buf))))
xml-files)
I don't see how that can work properly, since `find-file-noselect' does
not make the visited-file buffer current, and `set-buffer-modified-p'
acts only on the current buffer.
Am I missing something here, or is that a bug?
In any case, I would like to learn more about this. Currently I am
doing this (since this code is for Emacs 23+, which has
`restore-buffer-modified-p'):
(with-current-buffer buf
(restore-buffer-modified-p nil)
(kill-buffer buf))
Is there a way to accomplish that without making BUF current?
In GNU Emacs 24.3.50.1 (i386-mingw-nt5.1.2600)
of 2012-12-13 on ODIEONE
Bzr revision: 111211 eggert@cs.ucla.edu-20121213021749-eyqqen0ewhn2hogq
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
`configure --with-gcc (4.7) --no-opt --enable-checking --cflags
-IC:/Devel/emacs/build/include -Wall -Wextra -Wno-sign-compare
-Wno-type-limits -Wno-missing-field-initializers -Wno-pointer-sign
-Wdeclaration-after-statement --ldflags -LC:/Devel/emacs/build/lib'
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#13197: 24.3.50; org-odt.el code that kills modified buffers
2012-12-15 22:35 bug#13197: 24.3.50; org-odt.el code that kills modified buffers Drew Adams
@ 2012-12-16 4:37 ` Jambunathan K
2012-12-16 23:15 ` Bastien
0 siblings, 1 reply; 4+ messages in thread
From: Jambunathan K @ 2012-12-16 4:37 UTC (permalink / raw)
To: Drew Adams; +Cc: 13197
"Drew Adams" <drew.adams@oracle.com> writes:
> I was grepping some source files to see how other code handles this kind
> of thing, and I came across this in org-odt.el (in
> `org-odt-cleanup-xml-buffers'):
>
> (mapc (lambda (file)
> (let ((buf (find-file-noselect
> (expand-file-name file org-odt-zip-dir) t)))
> (when (buffer-name buf)
> (set-buffer-modified-p nil)
> (kill-buffer buf))))
> xml-files)
>
> I don't see how that can work properly, since `find-file-noselect' does
> not make the visited-file buffer current, and `set-buffer-modified-p'
> acts only on the current buffer.
>
> Am I missing something here, or is that a bug?
It looks like a slip on my part. In all other places in org-odt.el, I
do
(with-current-buffer (find-file-noselect )
)
When an error is thrown during the export process, the buffer will be in
modified but unsaved state. I forcibly mark the buffer as modified
before killing it.
Let me put in a fix in Org repo. Next merge will take care of this
issue.
--
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-12-20 15:07 UTC | newest]
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2012-12-15 22:35 bug#13197: 24.3.50; org-odt.el code that kills modified buffers Drew Adams
2012-12-16 4:37 ` Jambunathan K
2012-12-16 23:15 ` Bastien
2012-12-20 15:07 ` Bastien
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