* bug#8891: 23.3; save-buffer messages about writing files that may not be written
@ 2011-06-18 16:50 Dave Abrahams
2011-07-03 16:15 ` Lars Magne Ingebrigtsen
0 siblings, 1 reply; 9+ messages in thread
From: Dave Abrahams @ 2011-06-18 16:50 UTC (permalink / raw)
To: 8891
I have hooked write-file-functions for certain files to check the md5
sum of the file against what it was when last saved and simply mark the
file unmodified
(https://github.com/dabrahams/initsplit/blob/master/initsplit.el#L300)
However, I get a message about saving these files even when there's been
no modification. I think these lines in save-buffer come too early:
(if (and modp (buffer-file-name))
(message "Saving file %s..." (buffer-file-name)))
In GNU Emacs 23.3.1 (x86_64-apple-darwin, NS apple-appkit-1038.35)
of 2011-03-09 on black.porkrind.org
Windowing system distributor `Apple', version 10.3.1038
configured using `configure '--host=x86_64-apple-darwin' '--build=i686-apple-darwin' '--with-ns' 'build_alias=i686-apple-darwin' 'host_alias=x86_64-apple-darwin' 'CC=gcc -mmacosx-version-min=10.5''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: nil
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: nil
value of $XMODIFIERS: nil
locale-coding-system: nil
default enable-multibyte-characters: t
Major mode: Emacs-Lisp
Minor modes in effect:
diff-auto-refine-mode: t
me-minor-mode: t
show-paren-mode: t
ido-everywhere: t
global-auto-revert-mode: t
delete-selection-mode: t
tooltip-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Recent input:
C-. , SPC t h e r e f o r <M-backspace> I M O , M-q
C-n C-e SPC t o SPC a l l o w SPC C-p C-p C-p C-p C-n
C-a C-. C-. C-. C-. C-. C-. C-. C-. C-. C-, u s a b
i l i t y SPC C-SPC C-, <backspace> M-q C-n C-n C-n
C-p C-p C-p C-n C-n C-n C-e C-n C-p C-p C-p C-p C-p
C-n C-n C-n C-n C-p C-p C-p C-p C-n C-, C-, C-, C-e
C-n C-n C-n C-n C-p C-p C-p C-p C-p C-p C-p C-p C-n
C-n C-n C-n C-n C-n C-n C-p C-p C-p C-p C-n C-n C-n
C-n C-n C-p C-, C-k b e SPC s u r e SPC t h a t SPC
t h e SPC m e s s a g e SPC j u s t SPC w r i t t e
n SPC i s n ' t SPC a b o u t SPC t o SPC b e SPC o
v e r w r i t t e n SPC s o SPC f a c <backspace> s
t SPC t h a t SPC t h e SPC u s e r SPC c o u l d n
' t SPC r e a d SPC i t SPC a n y w a y . C-p C-p C-p
C-p C-p C-p C-p C-p C-p C-p C-p C-n C-n C-n C-n C-n
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-p C-p C-p
C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-n
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-p C-p C-p
C-p C-c C-c y e s <return> M-x M-p <return>
Recent messages:
Checking for load-path shadows...done
Mark set [4 times]
Auto-saving...done
Mark set [2 times]
Auto-saving...done
Mark set
Auto-saving...done
Sending...
Sending via mail...
Sending...done
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/Users/dave/.emacs.d/el-get/nognus/lisp/mail-parse hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/mail-parse
/Users/dave/.emacs.d/el-get/nognus/lisp/legacy-gnus-agent hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/legacy-gnus-agent
/Users/dave/.emacs.d/el-get/nognus/lisp/ietf-drums hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/ietf-drums
/Users/dave/.emacs.d/el-get/nognus/lisp/html2text hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/html2text
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-win hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-win
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-vm hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-vm
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-uu hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-uu
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-util hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-util
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-undo hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-undo
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-topic hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-topic
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/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-start hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-start
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-srvr hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-srvr
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-spec hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-spec
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-sieve hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-sieve
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-setup hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-setup
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-score hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-score
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-salt hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-salt
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-registry hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-registry
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-range hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-range
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-picon hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-picon
/Users/dave/.emacs.d/el-get/nognus/lisp/gnus-msg hides /Applications/Emacs.app/Contents/Resources/lisp/gnus/gnus-msg
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Features:
(shadow sort gnus-util mail-extr message format-spec rfc822 mml mml-sec
mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045
ietf-drums mailabbrev gmm-utils mailheader emacsbug thingatpt newcomment
cus-edit multi-isearch jka-compr ediff-merg ediff-diff ediff-wind
ediff-help ediff-util ediff-mult ediff-init ediff vc-git wl-score
mule-util ssl elmo-nntp elmo-sendlog elmo-internal elmo-imap4 time-stamp
elmo-net elmo-dop elmo-cache elmo-map hl-line modb-standard wl-mime
mime-edit pgg-parse mail-utils mailalias mime-setup mail-mime-setup
semi-setup mime-pgp pgg-def mime-play filename mime-image signature
wl-spam elmo-spam elsp-header elsp-generic org-wl bookmark
org-mac-message org-habit org-agenda org-id org-crypt org ob-emacs-lisp
ob-tangle ob-ref ob-lob ob-table org-footnote org-src ob-comint ob-keys
ob ob-eval org-pcomplete pcomplete org-list org-faces org-compat
org-entities org-macs cal-menu calendar cal-loaddefs filladapt wl-demo
wl-draft eword-encode wl-template sendmail wl-news derived wl-address
wl-thread wl-action wl-summary ps-print ps-def lpr wl-refile wl-message
elmo-mime mmelmo-buffer mmelmo-imap mime-view mime-conf calist semi-def
mmimap mime-parse mmbuffer mmgeneric wl-highlight elmo-multi wl-folder
wl wl-e21 wl-util pp elmo-flag elmo-localdir wl-vars epg-config
wl-version elmo elmo-signal elmo-msgdb modb modb-generic modb-entity
mime elmo-util emu invisible inv-23 poem poem-e20 poem-e20_3 utf7
eword-decode mel mime-def alist std11 mcharset mcs-20 mcs-e20 pces
pces-e20 pces-20 broken pcustom elmo-date timezone path-util elmo-vars
poe elmo-version pym static apel-ver product luna magit diff-mode
log-edit pcvs-util add-log zenburn compile comint ring maxframe
system-type-darwin-theme .loaddefs find-func browse-kill-ring
byte-code-cache byte-opt gravatar time-date url-cache url url-proxy
url-privacy url-expand url-methods url-history url-cookie url-util
url-parse url-vars mm-util mail-prsvr mailcap org-install gnus-load info
markdown-mode noutline outline yasnippet advice advice-preload edmacro
kmacro help-mode view assoc color-theme wid-edit el-get autoload
help-fns bytecomp byte-compile cl cl-19 dired regexp-opt easy-mmode
warnings paren server ido autorevert delsel cus-start cus-load elhome
tooltip ediff-hook vc-hooks lisp-float-type mwheel ns-win easymenu
tool-bar dnd fontset image fringe lisp-mode register page menu-bar
rfn-eshadow timer select scroll-bar mldrag mouse jit-lock font-lock
syntax facemenu font-core frame cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button
minibuffer faces cus-face files text-properties overlay md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process ns multi-tty emacs)
--
Dave Abrahams
BoostPro Computing
http://www.boostpro.com
^ permalink raw reply [flat|nested] 9+ messages in thread
* bug#8891: 23.3; save-buffer messages about writing files that may not be written
2011-06-18 16:50 bug#8891: 23.3; save-buffer messages about writing files that may not be written Dave Abrahams
@ 2011-07-03 16:15 ` Lars Magne Ingebrigtsen
2011-07-03 20:26 ` Dave Abrahams
0 siblings, 1 reply; 9+ messages in thread
From: Lars Magne Ingebrigtsen @ 2011-07-03 16:15 UTC (permalink / raw)
To: Dave Abrahams; +Cc: 8891
Dave Abrahams <dave@boostpro.com> writes:
> I have hooked write-file-functions for certain files to check the md5
> sum of the file against what it was when last saved and simply mark the
> file unmodified
> (https://github.com/dabrahams/initsplit/blob/master/initsplit.el#L300)
>
> However, I get a message about saving these files even when there's been
> no modification. I think these lines in save-buffer come too early:
>
> (if (and modp (buffer-file-name))
> (message "Saving file %s..." (buffer-file-name)))
Hm. If `modp' is true, then the buffer has been modified, hasn't it?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog http://lars.ingebrigtsen.no/
^ permalink raw reply [flat|nested] 9+ messages in thread
* bug#8891: 23.3; save-buffer messages about writing files that may not be written
2011-07-03 16:15 ` Lars Magne Ingebrigtsen
@ 2011-07-03 20:26 ` Dave Abrahams
2011-07-03 20:31 ` Lars Magne Ingebrigtsen
0 siblings, 1 reply; 9+ messages in thread
From: Dave Abrahams @ 2011-07-03 20:26 UTC (permalink / raw)
To: Lars Magne Ingebrigtsen; +Cc: 8891
on Sun Jul 03 2011, Lars Magne Ingebrigtsen <larsi-AT-gnus.org> wrote:
> Dave Abrahams <dave@boostpro.com> writes:
>
>> I have hooked write-file-functions for certain files to check the md5
>> sum of the file against what it was when last saved and simply mark the
>> file unmodified
>> (https://github.com/dabrahams/initsplit/blob/master/initsplit.el#L300)
>>
>> However, I get a message about saving these files even when there's been
>> no modification. I think these lines in save-buffer come too early:
>>
>> (if (and modp (buffer-file-name))
>> (message "Saving file %s..." (buffer-file-name)))
>
> Hm. If `modp' is true, then the buffer has been modified, hasn't it?
Yes... until `save-buffer' calls `basic-save-buffer' which invokes
`write-file-functions', one of which decides to override the notion of
"modified-ness" when it ascertains that the contents have not actually
changed. So modp tells the truth at the time it's checked, but IMO it's
checked too early.
--
Dave Abrahams
BoostPro Computing
http://www.boostpro.com
^ permalink raw reply [flat|nested] 9+ messages in thread
* bug#8891: 23.3; save-buffer messages about writing files that may not be written
2011-07-03 20:26 ` Dave Abrahams
@ 2011-07-03 20:31 ` Lars Magne Ingebrigtsen
2011-07-03 20:51 ` Dave Abrahams
2011-07-04 2:35 ` Chong Yidong
0 siblings, 2 replies; 9+ messages in thread
From: Lars Magne Ingebrigtsen @ 2011-07-03 20:31 UTC (permalink / raw)
To: Dave Abrahams; +Cc: 8891
Dave Abrahams <dave@boostpro.com> writes:
> Yes... until `save-buffer' calls `basic-save-buffer' which invokes
> `write-file-functions', one of which decides to override the notion of
> "modified-ness" when it ascertains that the contents have not actually
> changed. So modp tells the truth at the time it's checked, but IMO it's
> checked too early.
Right. So perhaps `basic-save-buffer-2' is the right place to output
the message? I've grepped through the .el files, and there doesn't seem
to be any other callers other than the straight line down from
`save-buffer'.
Opinions, anybody?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog http://lars.ingebrigtsen.no/
^ permalink raw reply [flat|nested] 9+ messages in thread
* bug#8891: 23.3; save-buffer messages about writing files that may not be written
2011-07-03 20:31 ` Lars Magne Ingebrigtsen
@ 2011-07-03 20:51 ` Dave Abrahams
2011-07-04 2:35 ` Chong Yidong
1 sibling, 0 replies; 9+ messages in thread
From: Dave Abrahams @ 2011-07-03 20:51 UTC (permalink / raw)
To: Lars Magne Ingebrigtsen; +Cc: 8891
on Sun Jul 03 2011, Lars Magne Ingebrigtsen <larsi-AT-gnus.org> wrote:
> Dave Abrahams <dave@boostpro.com> writes:
>
>> Yes... until `save-buffer' calls `basic-save-buffer' which invokes
>> `write-file-functions', one of which decides to override the notion of
>> "modified-ness" when it ascertains that the contents have not actually
>> changed. So modp tells the truth at the time it's checked, but IMO it's
>> checked too early.
>
> Right. So perhaps `basic-save-buffer-2' is the right place to output
> the message? I've grepped through the .el files, and there doesn't seem
> to be any other callers other than the straight line down from
> `save-buffer'.
>
> Opinions, anybody?
To be ridiculously general, we could observe that some
`write-file-functions' probably /do/ write the file (their own way)
before returning non-nil, and in those cases, the message is
appropriate. So we could say that a `write-file-function' can return a
special symbol like `not-really-modified' or `do-not-write' to suppress
the message.
--
Dave Abrahams
BoostPro Computing
http://www.boostpro.com
^ permalink raw reply [flat|nested] 9+ messages in thread
* bug#8891: 23.3; save-buffer messages about writing files that may not be written
2011-07-03 20:31 ` Lars Magne Ingebrigtsen
2011-07-03 20:51 ` Dave Abrahams
@ 2011-07-04 2:35 ` Chong Yidong
2011-07-04 12:19 ` Lars Magne Ingebrigtsen
1 sibling, 1 reply; 9+ messages in thread
From: Chong Yidong @ 2011-07-04 2:35 UTC (permalink / raw)
To: Lars Magne Ingebrigtsen; +Cc: Dave Abrahams, 8891
Lars Magne Ingebrigtsen <larsi@gnus.org> writes:
>> Yes... until `save-buffer' calls `basic-save-buffer' which invokes
>> `write-file-functions', one of which decides to override the notion of
>> "modified-ness" when it ascertains that the contents have not actually
>> changed. So modp tells the truth at the time it's checked, but IMO it's
>> checked too early.
>
> Right. So perhaps `basic-save-buffer-2' is the right place to output
> the message? I've grepped through the .el files, and there doesn't seem
> to be any other callers other than the straight line down from
> `save-buffer'.
>
> Opinions, anybody?
I don't think it's worth changing.
^ permalink raw reply [flat|nested] 9+ messages in thread
* bug#8891: 23.3; save-buffer messages about writing files that may not be written
2011-07-04 2:35 ` Chong Yidong
@ 2011-07-04 12:19 ` Lars Magne Ingebrigtsen
2011-07-04 17:41 ` Chong Yidong
0 siblings, 1 reply; 9+ messages in thread
From: Lars Magne Ingebrigtsen @ 2011-07-04 12:19 UTC (permalink / raw)
To: Chong Yidong; +Cc: Dave Abrahams, 8891
Chong Yidong <cyd@stupidchicken.com> writes:
>> Right. So perhaps `basic-save-buffer-2' is the right place to output
>> the message? I've grepped through the .el files, and there doesn't seem
>> to be any other callers other than the straight line down from
>> `save-buffer'.
>>
>> Opinions, anybody?
>
> I don't think it's worth changing.
It would be a very minor change -- it would just be moving a `message'
down into `basic-save-buffer-2' from `save-buffer', I think.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog http://lars.ingebrigtsen.no/
^ permalink raw reply [flat|nested] 9+ messages in thread
* bug#8891: 23.3; save-buffer messages about writing files that may not be written
2011-07-04 12:19 ` Lars Magne Ingebrigtsen
@ 2011-07-04 17:41 ` Chong Yidong
2011-07-04 20:36 ` Dave Abrahams
0 siblings, 1 reply; 9+ messages in thread
From: Chong Yidong @ 2011-07-04 17:41 UTC (permalink / raw)
To: Lars Magne Ingebrigtsen; +Cc: Dave Abrahams, 8891
Lars Magne Ingebrigtsen <larsi@gnus.org> writes:
>> I don't think it's worth changing.
>
> It would be a very minor change -- it would just be moving a `message'
> down into `basic-save-buffer-2' from `save-buffer', I think.
The implications are not obvious. One good thing about emitting the
"saving" message early is that if any of the intermediate steps take a
long time, at least the user is informed about what Emacs is working on.
Postphoning the "saving" message eliminates that benefit, for the very
minor benefit of handling a corner case (a custom write-file-functions
entry) a tiny bit better.
^ permalink raw reply [flat|nested] 9+ messages in thread
* bug#8891: 23.3; save-buffer messages about writing files that may not be written
2011-07-04 17:41 ` Chong Yidong
@ 2011-07-04 20:36 ` Dave Abrahams
0 siblings, 0 replies; 9+ messages in thread
From: Dave Abrahams @ 2011-07-04 20:36 UTC (permalink / raw)
To: Chong Yidong; +Cc: Lars Magne Ingebrigtsen, 8891@debbugs.gnu.org
On Jul 4, 2011, at 1:41 PM, Chong Tiding <cyd@stupidchicken.com> wrote:
> Lars Magne Ingebrigtsen <larsi@gnus.org> writes:
>
>>> I don't think it's worth changing.
>>
>> It would be a very minor change -- it would just be moving a `message'
>> down into `basic-save-buffer-2' from `save-buffer', I think.
>
> The implications are not obvious. One good thing about emitting the
> "saving" message early is that if any of the intermediate steps take a
> long time, at least the user is informed about what Emacs is working on.
>
> Postphoning the "saving" message eliminates that benefit, for the very
> minor benefit of handling a corner case (a custom write-file-functions
> entry) a tiny bit better.
FWIW I think I agree with you. I work around it by advising save-buffer; maybe that's for the best.
--
BoostPro Computing * http://boostpro.com
[Sent from coveted but awkward mobile device]
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2011-07-04 20:36 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-06-18 16:50 bug#8891: 23.3; save-buffer messages about writing files that may not be written Dave Abrahams
2011-07-03 16:15 ` Lars Magne Ingebrigtsen
2011-07-03 20:26 ` Dave Abrahams
2011-07-03 20:31 ` Lars Magne Ingebrigtsen
2011-07-03 20:51 ` Dave Abrahams
2011-07-04 2:35 ` Chong Yidong
2011-07-04 12:19 ` Lars Magne Ingebrigtsen
2011-07-04 17:41 ` Chong Yidong
2011-07-04 20:36 ` Dave Abrahams
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