Copy/iSearch/Occur on folded outline view?

Copy/iSearch/Occur on folded outline view?

[Thorsten Jolitz]

Hi List, 

sometimes I would like to copy parts of a (partly) folded outline view,
or do some searching (isearch, occur) only on the visible headlines. Is
there a way to make these commands act only on the visible parts of the
folded buffer?

-- 
cheers,
Thorsten

Re: Copy/iSearch/Occur on folded outline view?

[Bastien]

Thorsten Jolitz <tjolitz@googlemail.com> writes:

> sometimes I would like to copy parts of a (partly) folded outline view,
> or do some searching (isearch, occur) only on the visible headlines. Is
> there a way to make these commands act only on the visible parts of the
> folded buffer?

For isearch, you have `search-invisible':

,----
| Its value is open
| 
| Documentation:
| If t incremental search can match hidden text.
| A nil value means don't match invisible text.
| When the value is `open', if the text matched is made invisible by
| an overlay having an `invisible' property and that overlay has a property
| `isearch-open-invisible', then incremental search will show the contents.
| (This applies when using `outline.el' and `hideshow.el'.)
| See also `reveal-mode' if you want overlays to automatically be opened
| whenever point is in one of them.
`----

HTH,

-- 
 Bastien

Re: Copy/iSearch/Occur on folded outline view?

[Thorsten Jolitz]

Bastien <bzg@altern.org> writes:

> Thorsten Jolitz <tjolitz@googlemail.com> writes:
>
>> sometimes I would like to copy parts of a (partly) folded outline view,
>> or do some searching (isearch, occur) only on the visible headlines. Is
>> there a way to make these commands act only on the visible parts of the
>> folded buffer?
>
> For isearch, you have `search-invisible':
> HTH,

yes, thanks for the tip.

-- 
cheers,
Thorsten

Re: Copy/iSearch/Occur on folded outline view?

[Michael Heerdegen]

Thorsten Jolitz <tjolitz@gmail.com> writes:

> > For isearch, you have `search-invisible':
> > HTH,
>
> yes, thanks for the tip.

You may also consider to define an toggle command for
`search-invisible', and bind it in `isearch-mode-map', like this


--8<---------------cut here---------------start------------->8---
(require 'cl-lib)

(defun isearch-cycle-search-invisible ()
  "Cycle the value of `search-invisible'.
Bound to \\<isearch-mode-map>\\[isearch-cycle-search-invisible] in `iseach'."
  (interactive)
  (setq search-invisible
        (cl-case search-invisible
          ((nil) t)
          ((t)   'open)
          (else  nil)))
  (message "search-invisible: %s" search-invisible)
  (sit-for 1.)
  (setq isearch-success t isearch-adjusted t)
  (isearch-update))

(add-hook
 'isearch-mode-hook
 (lambda ()
   (make-variable-buffer-local #'search-invisible)
   (define-key isearch-mode-map [(meta ?i)] #'isearch-cycle-search-invisible)))
--8<---------------cut here---------------end--------------->8---

This let's you cycle `search-invisible' while isearching with M-i.


Regards,

Michael.

Re: Copy/iSearch/Occur on folded outline view?

[Thorsten Jolitz]

Michael Heerdegen <michael_heerdegen@web.de> writes:

> You may also consider to define an toggle command for
> `search-invisible', and bind it in `isearch-mode-map'

very nice, thank you, I had to install cl-lib first, but then it works
like a charm, very helpfull when even the collapsed headlines (3 levels)
of your .emacs are some 260 lines. 

The keybinding does not work though, M-i keeps bound to

,--------------------
| It is bound to M-i.
| (tab-to-tab-stop)
`--------------------

after evaluating your code. 

And when I toggle back from isearch-invisible to isearch, big parts of the
buffer turn pink, but that might be totally unrelated and just a
side-effect of some other configuration.

-- 
cheers,
Thorsten

RE: Copy/iSearch/Occur on folded outline view?

[Drew Adams]

> > You may also consider to define an toggle command for
> > `search-invisible', and bind it in `isearch-mode-map'
> 
> very nice, thank you, I had to install cl-lib first, but then it works
> like a charm, very helpfull when even the collapsed headlines 
> (3 levels) of your .emacs are some 260 lines. 

FYI, Isearch+ also provides toggle key `C-+' for this.

However, unlike Michael's suggestion, it does not cycle among `t', `nil', and
`open'.  Instead, it toggles between `nil' and whichever of `t' and `open' you
prefer (see option `search-invisible').
http://www.emacswiki.org/cgi-bin/wiki/IsearchPlus

how to use C-+ in isearch+? (was: Re: Copy/iSearch/Occur on folded outline view?)

[Gregor Zattler]

Hi Drew,
* Drew Adams <drew.adams@oracle.com> [05. Feb. 2013]:
> FYI, Isearch+ also provides toggle key `C-+' for this.
[...]
> http://www.emacswiki.org/cgi-bin/wiki/IsearchPlus

This is what I need to cope with my org files!

I installed and initialized it as described in the file.  

But when I do isearch-forward-regexp (which is bound to C-s in my
init.el) and then C-+ [1] cursor moves to the first `+' sign
which is in an invisible part of the file (actually a drawer in
an org file).

What am I doing wrong?

Ciao, Gregor

Footnotes:

[1] C-+ meaning Control-Key and the plus sign on the normal
keys, not at the keypad (which my laptop does not have), yes?

-- 
 -... --- .-. . -.. ..--.. ...-.-

Re: how to use C-+ in isearch+?

[Michael Heerdegen]

Hi Gregor, hi Drew,

> But when I do isearch-forward-regexp (which is bound to C-s in my
> init.el) and then C-+ [1] cursor moves to the first `+' sign
> which is in an invisible part of the file (actually a drawer in
> an org file).

Giving it a try, this works perfect for me.

Gregor, are you sure that your keyboard is able to generate that key
event?  What do you see if you hit C-+ in some buffer at top level
(outside isearch)?

Do the other isearch+ bindings work?

This is the binding done in isearch+:

(define-key isearch-mode-map [(control ?+)] 'isearchp-toggle-invisible)

You may try to replace [(control ?+)] by another key and see if that
works.

Maybe Drew can help more.


Regards,

Michael.

SOLVED (was: Re: how to use C-+ in isearch+?)

[Gregor Zattler]

Hi Michael,
* Michael Heerdegen <michael_heerdegen@web.de> [06. Feb. 2013]:
>> But when I do isearch-forward-regexp (which is bound to C-s in my
>> init.el) and then C-+ [1] cursor moves to the first `+' sign
>> which is in an invisible part of the file (actually a drawer in
>> an org file).
> 
> Giving it a try, this works perfect for me.
> 
> Gregor, are you sure that your keyboard is able to generate that key
> event?  

You are right and I'm stupid for not mentioning that I use Emacs
mainly in a terminal emulator.[1]  No C-+ in these (at least not in
rxvt-unicode).  

> (define-key isearch-mode-map [(control ?+)] 'isearchp-toggle-invisible)
> 
> You may try to replace [(control ?+)] by another key and see if that
> works.

I tested this with `meta' instead of `control' and it now works
like a charm.

Thanks to you for your hint and thanks to Drew for this amazing
package.   

Ciao, Gregor

Footnotes:

[1] It's so much faster and the fonts are more crisp...

-- 
 -... --- .-. . -.. ..--.. ...-.-

Re: Copy/iSearch/Occur on folded outline view?

[Bastien]

Hi Drew,

"Drew Adams" <drew.adams@oracle.com> writes:

>> > You may also consider to define an toggle command for
>> > `search-invisible', and bind it in `isearch-mode-map'
>> 
>> very nice, thank you, I had to install cl-lib first, but then it works
>> like a charm, very helpfull when even the collapsed headlines 
>> (3 levels) of your .emacs are some 260 lines. 
>
> FYI, Isearch+ also provides toggle key `C-+' for this.

I'm willing to allow this for org-mode.

Do you mind if I borrow your idea and add this code to Org?

Thanks,

(define-key isearch-mode-map [(control ?+)] 'org-isearch-toggle-invisible)

(defvar org-search-invisibile-default)
(defun org-isearch-toggle-invisible ()
  "Toggle regexp searching on or off."
  (interactive)
  (unless (boundp 'org-search-invisibile-default)
    (setq org-search-invisibile-default search-invisible))
  (setq search-invisible
	(cond ((eq search-invisible 'open) nil)
	      ((eq search-invisible nil) 'open)))
  (let ((message-log-max nil))
    (message "%s%s [search %svisible]"
	     (isearch-message-prefix nil isearch-nonincremental)
	     isearch-message
	     (if search-invisible "in" "")))
  (setq isearch-success t isearch-adjusted t)
  (sit-for 1)
  (add-hook 'isearch-mode-end-hook
	    (lambda () (setq search-invisible org-search-invisibile-default)))
  (isearch-update))

-- 
 Bastien

RE: Copy/iSearch/Occur on folded outline view?

[Drew Adams]

> > FYI, Isearch+ also provides toggle key `C-+' for this.
> 
> I'm willing to allow this for org-mode.
> Do you mind if I borrow your idea and add this code to Org?

No, of course I don't mind.  Everything that is in Isearch+ has been proposed to
Emacs Dev, but only a little has been adopted, after some time.

Re: Copy/iSearch/Occur on folded outline view?

[Bastien]

"Drew Adams" <drew.adams@oracle.com> writes:

>> > FYI, Isearch+ also provides toggle key `C-+' for this.
>> 
>> I'm willing to allow this for org-mode.
>> Do you mind if I borrow your idea and add this code to Org?
>
> No, of course I don't mind.  Everything that is in Isearch+ has been proposed to
> Emacs Dev, but only a little has been adopted, after some time.

Thanks.  But I agree with Michael, temporary cycling through 
the various `search-invisible' states should be in Emacs.

I will see if I can submit a patch.

-- 
 Bastien

Re: Copy/iSearch/Occur on folded outline view?

[Michael Heerdegen]

Hello Bastien,

> > FYI, Isearch+ also provides toggle key `C-+' for this.
>
> I'm willing to allow this for org-mode.

Mainly FYI: Please note that this kind of solution may users of org make
think that `isearch-query-replace' and `isearch-query-replace-regexp'
(bound to M-% and C-M-%) would be able to handle invisible text.  This
is not the case, however - these commands never ignore invisible text
and don't hesitate to replace stuff in regions that the user doesn't
see.  This is dangerous!

I filed two bug reports about these problems some time ago:

  24.1.50; Suggestion: Let M-i in isearch cycle `search-invisible'

  feature request: `isearch-query-replace' should open invisible text

Sadly, both things were not yet realized.  But nevertheless I think it
would be good if we could find a solution for the whole of Emacs, not
only for Org.  I think org is not very special in that regards, this
issue also applies e.g. for hs-minor-mode.  Although I'm not against a
temporary solution for org-mode alone.


Regards,

Michael.

RE: Copy/iSearch/Occur on folded outline view?

[Drew Adams]

> > > FYI, Isearch+ also provides toggle key `C-+' for this.
> >
> > I'm willing to allow this for org-mode.
> 
> Mainly FYI: Please note that this kind of solution may users 
> of org make think that `isearch-query-replace' and
> `isearch-query-replace-regexp' (bound to M-% and C-M-%)
> would be able to handle invisible text.
>
> This is not the case, however - these commands never ignore
> invisible text and don't hesitate to replace stuff in regions
> that the user doesn't see.  This is dangerous!
> 
> I filed two bug reports about these problems some time ago:
> 24.1.50; Suggestion: Let M-i in isearch cycle `search-invisible'
> feature request: `isearch-query-replace' should open invisible text
> 
> Sadly, both things were not yet realized.

Yes, that's too bad.

FWIW, I tried searching in the bugs database for "search-invisible" in the
Subject line, and I could find only this one (#11378):
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11378

> But nevertheless I think it would be good if we could find a
> solution for the whole of Emacs, not only for Org.

+1

But lacking a response in that direction from Emacs Dev, adding it to Org is a
start.  Eventually, Org users who are used to this would add to the request for
it for Emacs as a whole...

>  Although I'm not against a temporary solution for org-mode alone.

+1

Re: Copy/iSearch/Occur on folded outline view?

[Bastien]

Hi Michael,

Michael Heerdegen <michael_heerdegen@web.de> writes:

> I filed two bug reports about these problems some time ago:
>
>   24.1.50; Suggestion: Let M-i in isearch cycle `search-invisible'
>
>   feature request: `isearch-query-replace' should open invisible
>   text

Can you send me the links to those reports?

> Sadly, both things were not yet realized.  But nevertheless I think it
> would be good if we could find a solution for the whole of Emacs, not
> only for Org.  I think org is not very special in that regards, this
> issue also applies e.g. for hs-minor-mode.  Although I'm not against a
> temporary solution for org-mode alone.

Agreed, I'll see what I can do -- unless someone else beats me to it.

-- 
 Bastien

Re: Copy/iSearch/Occur on folded outline view?

[Michael Heerdegen]

Bastien <bzg@altern.org> writes:

> > I filed two bug reports about these problems some time ago:
> >
> >   24.1.50; Suggestion: Let M-i in isearch cycle `search-invisible'
> >
> >   feature request: `isearch-query-replace' should open invisible
> >   text
>
> Can you send me the links to those reports?

Tried to find a link for you under lists.gnu.org, but there, the thread
of the first one seems not to be complete, dunno why.

Are you able to use debbugs?  I entered "M-i in isearch" or "should open
invisible" respectively as search phrase, without any attributes, and
got the complete threads..

Apparently, Juri got quite far in implementing a patch based on isearch
filters, but the whole thing got stuck.  We have to revive
this thread somehow.


Regards,

Michael.

Re: Copy/iSearch/Occur on folded outline view?

[Michael Heerdegen]

Michael Heerdegen <michael_heerdegen@web.de> writes:

> Are you able to use debbugs?

I was not very clear here. I meant the Gnu Elpa package of that name,
and the command `debbugs-gnu-search' that it provides.

Anyway, here are links to the threads at debbugs.gnu.org:

http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11378

http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11746


Regards,

Michael.

Re: Copy/iSearch/Occur on folded outline view?

[Michael Heerdegen]

Thorsten Jolitz <tjolitz@gmail.com> writes:

> The keybinding does not work though, M-i keeps bound to
>
> ,--------------------
> | It is bound to M-i.
> | (tab-to-tab-stop)
> `--------------------
>
> after evaluating your code. 

Works for me, tested in emacs -Q.  Note that you must hit M-i while
isearch is active - it's not a global binding.

> And when I toggle back from isearch-invisible to isearch, big parts of the
> buffer turn pink, but that might be totally unrelated and just a
> side-effect of some other configuration.

Dunno why you see that, sorry, I never experienced that.


Regards,

Michael.

Re: Copy/iSearch/Occur on folded outline view?

[Thorsten Jolitz]

Michael Heerdegen <michael_heerdegen@web.de> writes:

> Thorsten Jolitz <tjolitz@gmail.com> writes:
>
>> The keybinding does not work though, M-i keeps bound to
>>
>> ,--------------------
>> | It is bound to M-i.
>> | (tab-to-tab-stop)
>> `--------------------
>>
>> after evaluating your code. 
>
> Works for me, tested in emacs -Q.  Note that you must hit M-i while
> isearch is active - it's not a global binding.

ah, I wasn't aware of that, now it works here too, thanks. 

>> And when I toggle back from isearch-invisible to isearch, big parts of the
>> buffer turn pink, but that might be totally unrelated and just a
>> side-effect of some other configuration.
>
> Dunno why you see that, sorry, I never experienced that.

may that was just an artefact of some other configuration, I didn't see
it again. 

-- 
cheers,
Thorsten