* bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion
@ 2013-03-06 17:21 Josh
2013-03-06 19:10 ` Jambunathan K
2013-03-31 13:36 ` Stefan Monnier
0 siblings, 2 replies; 8+ messages in thread
From: Josh @ 2013-03-06 17:21 UTC (permalink / raw)
To: 13891
I noticed two things that show that partial highlight-regexp state
lingers after calling revert-buffer, see items 9 and 12. After buffer
reversion, I would expect this state either to be completely backed
out or to survive completely intact. Ideally both of these behaviors
would be supported and under users' control.
(1) emacs -Q foo.txt
(2) insert `foo bar' into buffer and save
(3) M-s h r foo RET RET
(4) note that foo is highlighted with hi-yellow face
(5) make a trivial edit to make buffer-modified-p be true
(6) M-x revert-buffer and confirm
(7) note that highlighting goes away as expected
(8) M-s h r bar RET but do not respond to the prompt for the face
(9) Expected default face: hi-yellow. Actual: hi-pink.
(10) C-g to cancel the highlight-regexp command
(11) M-s h u but do not respond to the prompt for a regexp
(12) Expected: "No highlighting to remove". Actual: prompts for
regexp with a default of foo.
(13) Hit RET to accept the default regexp foo to unhighlight
(14) M-s h u
(15) note that "No highlighting to remove" appears, as should have
happened after (11)
In GNU Emacs 24.3.50.1 (x86_64-apple-darwin, NS apple-appkit-1187.34)
of 2013-03-04 on bix
Bzr revision: 111935 yamaoka@jpl.org-20130304102733-4qy111z41qwoh2as
Windowing system distributor `Apple', version 10.3.1187
Configured using:
`configure --host=x86_64-apple-darwin --build=i686-apple-darwin
--with-ns'
Important settings:
value of $LC_CTYPE: en_US.UTF-8
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
Major mode: Text
Minor modes in effect:
tooltip-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
Recent input:
f o o SPC f a <backspace> <backspace> b a r C-x C-s
M-s h r f o o <return> <return> SPC M-x r e v e r t
- b u f f <tab> <return> y e s <return> M-s h r b a
r <return> C-g M-s h u <return> M-s h u M-x e <backspace>
r e p o r t - e m a c s - b u f <tab> <return> <backspace>
<return> h i g h l i g h t - r e g e x p SPC i n c
o r r e c t l y SPC r e t a i n s SPC s t a t e SPC
a f t e r SPC b u f f e r SPC r e v e r s i o n C-a
C-k C-g M-x r e p o r t - e m a c s - b u g <retur
n>
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
foo.txt has auto save data; consider M-x recover-this-file
Saving file /Users/jlf/tmp/foo.txt...
Wrote /Users/jlf/tmp/foo.txt
You can run the command `revert-buffer' with s-u
Quit
byte-code: No highlighting to remove
Quit
Load-path shadows:
None found.
Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils hi-lock time-date tooltip ediff-hook
vc-hooks lisp-float-type mwheel ns-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list newcomment lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar 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 minibuffer loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process ns multi-tty emacs)
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion
2013-03-06 17:21 bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion Josh
@ 2013-03-06 19:10 ` Jambunathan K
2013-03-18 7:35 ` Jambunathan K
2013-03-31 13:36 ` Stefan Monnier
1 sibling, 1 reply; 8+ messages in thread
From: Jambunathan K @ 2013-03-06 19:10 UTC (permalink / raw)
To: Josh; +Cc: 13891
I can circulate a patch for some or all of what you report below. Are
you willing to apply the patch and give immediate feedback? Please
confirm with Yes or No.
Josh <josh@foxtail.org> writes:
> I noticed two things that show that partial highlight-regexp state
> lingers after calling revert-buffer, see items 9 and 12. After buffer
> reversion, I would expect this state either to be completely backed
> out or to survive completely intact. Ideally both of these behaviors
> would be supported and under users' control.
>
> (1) emacs -Q foo.txt
> (2) insert `foo bar' into buffer and save
> (3) M-s h r foo RET RET
> (4) note that foo is highlighted with hi-yellow face
> (5) make a trivial edit to make buffer-modified-p be true
> (6) M-x revert-buffer and confirm
> (7) note that highlighting goes away as expected
> (8) M-s h r bar RET but do not respond to the prompt for the face
> (9) Expected default face: hi-yellow. Actual: hi-pink.
> (10) C-g to cancel the highlight-regexp command
> (11) M-s h u but do not respond to the prompt for a regexp
> (12) Expected: "No highlighting to remove". Actual: prompts for
> regexp with a default of foo.
> (13) Hit RET to accept the default regexp foo to unhighlight
> (14) M-s h u
> (15) note that "No highlighting to remove" appears, as should have
> happened after (11)
>
> In GNU Emacs 24.3.50.1 (x86_64-apple-darwin, NS apple-appkit-1187.34)
> of 2013-03-04 on bix
> Bzr revision: 111935 yamaoka@jpl.org-20130304102733-4qy111z41qwoh2as
> Windowing system distributor `Apple', version 10.3.1187
> Configured using:
> `configure --host=x86_64-apple-darwin --build=i686-apple-darwin
> --with-ns'
>
> Important settings:
> value of $LC_CTYPE: en_US.UTF-8
> value of $LANG: en_US.UTF-8
> locale-coding-system: utf-8-unix
> default enable-multibyte-characters: t
>
> Major mode: Text
>
> Minor modes in effect:
> tooltip-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
>
> Recent input:
> f o o SPC f a <backspace> <backspace> b a r C-x C-s
> M-s h r f o o <return> <return> SPC M-x r e v e r t
> - b u f f <tab> <return> y e s <return> M-s h r b a
> r <return> C-g M-s h u <return> M-s h u M-x e <backspace>
> r e p o r t - e m a c s - b u f <tab> <return> <backspace>
> <return> h i g h l i g h t - r e g e x p SPC i n c
> o r r e c t l y SPC r e t a i n s SPC s t a t e SPC
> a f t e r SPC b u f f e r SPC r e v e r s i o n C-a
> C-k C-g M-x r e p o r t - e m a c s - b u g <retur
> n>
>
> Recent messages:
> For information about GNU Emacs and the GNU system, type C-h C-a.
> foo.txt has auto save data; consider M-x recover-this-file
> Saving file /Users/jlf/tmp/foo.txt...
> Wrote /Users/jlf/tmp/foo.txt
> You can run the command `revert-buffer' with s-u
> Quit
> byte-code: No highlighting to remove
> Quit
>
> Load-path shadows:
> None found.
>
> Features:
> (shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
> easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
> mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
> mm-util mail-prsvr mail-utils hi-lock time-date tooltip ediff-hook
> vc-hooks lisp-float-type mwheel ns-win tool-bar dnd fontset image
> regexp-opt fringe tabulated-list newcomment lisp-mode register page
> menu-bar rfn-eshadow timer select scroll-bar 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 minibuffer loaddefs
> button faces cus-face macroexp files text-properties overlay sha1 md5
> base64 format env code-pages mule custom widget hashtable-print-readable
> backquote make-network-process ns multi-tty emacs)
>
>
>
>
--
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion
2013-03-06 17:21 bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion Josh
2013-03-06 19:10 ` Jambunathan K
@ 2013-03-31 13:36 ` Stefan Monnier
2013-03-31 16:11 ` Jambunathan K
1 sibling, 1 reply; 8+ messages in thread
From: Stefan Monnier @ 2013-03-31 13:36 UTC (permalink / raw)
To: Josh; +Cc: 13891-done
> I noticed two things that show that partial highlight-regexp state
> lingers after calling revert-buffer, see items 9 and 12. After buffer
I've installed the patch below which should fix those problems.
Stefan
=== modified file 'lisp/hi-lock.el'
--- lisp/hi-lock.el 2013-03-08 04:18:16 +0000
+++ lisp/hi-lock.el 2013-03-31 13:31:41 +0000
@@ -389,7 +389,9 @@
(define-key-after menu-bar-edit-menu [hi-lock]
(cons "Regexp Highlighting" hi-lock-menu))
(hi-lock-find-patterns)
- (add-hook 'font-lock-mode-hook 'hi-lock-font-lock-hook nil t))
+ (add-hook 'font-lock-mode-hook 'hi-lock-font-lock-hook nil t)
+ ;; Remove regexps from font-lock-keywords (bug#13891).
+ (add-hook 'change-major-mode-hook (lambda () (hi-lock-mode -1)) nil t))
;; Turned off.
(when (or hi-lock-interactive-patterns
hi-lock-file-patterns)
^ permalink raw reply [flat|nested] 8+ messages in thread* bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion
2013-03-31 13:36 ` Stefan Monnier
@ 2013-03-31 16:11 ` Jambunathan K
2013-04-03 22:55 ` Stefan Monnier
0 siblings, 1 reply; 8+ messages in thread
From: Jambunathan K @ 2013-03-31 16:11 UTC (permalink / raw)
To: 13891; +Cc: josh
Stefan Monnier <monnier@IRO.UMontreal.CA> writes:
>> I noticed two things that show that partial highlight-regexp state
>> lingers after calling revert-buffer, see items 9 and 12. After buffer
>
> I've installed the patch below which should fix those problems.
(This is not a comment on the patch you have put in, but my initial
thoughts as I investigated the bug.)
I have a feeling that your fix is "inconsistent" with having
`hi-lock-interactive-patterns' as `permanent-local'.
`hi-lock-interactive-patterns' is marked as `permanent-local'. So the
original intention is clearly to *retain* the highlighting across the
reverts and change of major modes. With `global-hi-lock-mode' ON, you
will notice that highlighting will be retained across reverts.
When M-s h r is used, hi-lock-mode is turned on automatically. But
after revert, the hi-lock-mode (being a minor mode) never gets turned
back again.
I was thinking of fix along the lines of
1. If `hi-lock-interactive-patterns' is non-nil, turn on hi-lock-mode.
2. I think `font-lock-fontify-buffer' should be added to
`hi-lock-font-lock-hook'. For some reason, `hi-lock-font-lock-hook'
doesn't get called at all (even though it is added to the
`font-lock-mode-hook'.)
Problem area: `font-lock-mode-hook' is not documented and I really
don't when it is getting called.
>
>
> Stefan
>
>
> === modified file 'lisp/hi-lock.el'
> --- lisp/hi-lock.el 2013-03-08 04:18:16 +0000
> +++ lisp/hi-lock.el 2013-03-31 13:31:41 +0000
> @@ -389,7 +389,9 @@
> (define-key-after menu-bar-edit-menu [hi-lock]
> (cons "Regexp Highlighting" hi-lock-menu))
> (hi-lock-find-patterns)
> - (add-hook 'font-lock-mode-hook 'hi-lock-font-lock-hook nil t))
> + (add-hook 'font-lock-mode-hook 'hi-lock-font-lock-hook nil t)
> + ;; Remove regexps from font-lock-keywords (bug#13891).
> + (add-hook 'change-major-mode-hook (lambda () (hi-lock-mode -1)) nil t))
> ;; Turned off.
> (when (or hi-lock-interactive-patterns
> hi-lock-file-patterns)
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion
2013-03-31 16:11 ` Jambunathan K
@ 2013-04-03 22:55 ` Stefan Monnier
2013-04-04 15:46 ` Jambunathan K
0 siblings, 1 reply; 8+ messages in thread
From: Stefan Monnier @ 2013-04-03 22:55 UTC (permalink / raw)
To: Jambunathan K; +Cc: josh, 13891
>>> I noticed two things that show that partial highlight-regexp state
>>> lingers after calling revert-buffer, see items 9 and 12. After buffer
>> I've installed the patch below which should fix those problems.
> (This is not a comment on the patch you have put in, but my initial
> thoughts as I investigated the bug.)
> I have a feeling that your fix is "inconsistent" with having
> `hi-lock-interactive-patterns' as `permanent-local'.
Agreed. Even more so for hi-lock-file-patterns.
> With `global-hi-lock-mode' ON, you will notice that highlighting will
> be retained across reverts.
Not any more after my patch.
> 2. I think `font-lock-fontify-buffer' should be added to
> `hi-lock-font-lock-hook'.
Why?
> For some reason, `hi-lock-font-lock-hook' doesn't get called at all
> (even though it is added to the `font-lock-mode-hook'.)
What was your test case?
> Problem area: `font-lock-mode-hook' is not documented and I really
> don't when it is getting called.
font-lock-mode is a normal minor-mode, so font-lock-mode-hook is called
at the end of running font-lock-mode (both to enable and to disable it).
Stefan
^ permalink raw reply [flat|nested] 8+ messages in thread* bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion
2013-04-03 22:55 ` Stefan Monnier
@ 2013-04-04 15:46 ` Jambunathan K
0 siblings, 0 replies; 8+ messages in thread
From: Jambunathan K @ 2013-04-04 15:46 UTC (permalink / raw)
To: Stefan Monnier; +Cc: josh, 13891
[-- Attachment #1: Type: text/plain, Size: 792 bytes --]
>> `hi-lock-interactive-patterns' as `permanent-local'.
>
> Agreed. Even more so for hi-lock-file-patterns.
>> With `global-hi-lock-mode' ON, you will notice that highlighting will
>> be retained across reverts.
>
> Not any more after my patch.
Whether this change in behaviour counts as a regression, I am not sure.
>> 2. I think `font-lock-fontify-buffer' should be added to
>> `hi-lock-font-lock-hook'.
>
> Why?
`hi-lock-font-lock-hook' adds the font lock keywords.
`font-lock-fontify-buffer' activates the keywords.
>> For some reason, `hi-lock-font-lock-hook' doesn't get called at all
>> (even though it is added to the `font-lock-mode-hook'.)
>
> What was your test case?
For the sake of discussion, I undid your patch.
Apply this patch and re-load hi-lock.el.
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: hi-lock.el.diff --]
[-- Type: text/x-diff, Size: 623 bytes --]
=== modified file 'lisp/hi-lock.el'
--- lisp/hi-lock.el 2013-03-31 13:34:35 +0000
+++ lisp/hi-lock.el 2013-04-04 14:54:39 +0000
@@ -390,8 +390,8 @@ versions before 22 use the following in
(cons "Regexp Highlighting" hi-lock-menu))
(hi-lock-find-patterns)
(add-hook 'font-lock-mode-hook 'hi-lock-font-lock-hook nil t)
- ;; Remove regexps from font-lock-keywords (bug#13891).
- (add-hook 'change-major-mode-hook (lambda () (hi-lock-mode -1)) nil t))
+ (hi-lock-font-lock-hook)
+ (font-lock-fontify-buffer))
;; Turned off.
(when (or hi-lock-interactive-patterns
hi-lock-file-patterns)
[-- Attachment #3: Type: text/plain, Size: 700 bytes --]
1. M-s h r something
2. Modify buffer.
3. Revert buffer.
4. M-: hi-lock-interactive-patterns
Verify that variable is non-nil.
5. M-x hi-lock-mode. (For now do it by hand.)
6. See that highlighting kicks in.
My expectation was that once `hi-lock-mode' is turned on
`font-lock-mode-hook' will be *automatically* called.
Is it the minor mode's responsibility to explicitly call it's
fontification handler?
>
>> Problem area: `font-lock-mode-hook' is not documented and I really
>> don't when it is getting called.
>
> font-lock-mode is a normal minor-mode, so font-lock-mode-hook is called
> at the end of running font-lock-mode (both to enable and to disable it).
>
>
> Stefan
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2013-04-04 15:46 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-03-06 17:21 bug#13891: 24.3.50; highlight-regexp incorrectly retains partial state after buffer reversion Josh
2013-03-06 19:10 ` Jambunathan K
2013-03-18 7:35 ` Jambunathan K
2013-03-18 14:47 ` Josh
2013-03-31 13:36 ` Stefan Monnier
2013-03-31 16:11 ` Jambunathan K
2013-04-03 22:55 ` Stefan Monnier
2013-04-04 15:46 ` Jambunathan K
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