* how does invisibility impact org?
@ 2016-04-26 17:50 John Kitchin
2016-04-26 18:36 ` Rasmus
0 siblings, 1 reply; 3+ messages in thread
From: John Kitchin @ 2016-04-26 17:50 UTC (permalink / raw)
To: org-mode-email
Hi, I am trying to use this code to make parts of an org-file that are
not a verse block invisible. That part works fine, and I can also unhide
it. However, after that, I get errors like
org-back-to-heading: Before first headline at position 232 in buffer
selective-text.org
If I say, put the cursor in a code block and try to run it or special
edit it.
Any ideas what is going wrong here?
Thanks,
(defun flatten (LIST)
"flattens LIST"
(cond
((atom LIST) (list LIST))
((null (cdr LIST)) (flatten (car LIST)))
(t (append (flatten (car LIST)) (flatten (cdr LIST))))))
(defun view-verse ()
"Hide everything but the verse blocks."
(interactive)
(org-cycle '(64))
(let ((p (append
(list (point-min))
(flatten (org-element-map (org-element-parse-buffer) 'verse-block
(lambda (vb) (list (org-element-property :begin vb)
(org-element-property :end vb)))))
(list (point-max)))))
(add-to-invisibility-spec 'not-verse-block)
(loop for start in p by 'cddr
for end in (cdr p) by 'cddr
do (overlay-put (make-overlay start end) 'invisible 'not-verse-block))))
(defun unhide ()
(interactive)
(remove-from-invisibility-spec 'not-verse-block)
(ov-clear 'invisibility 'not-verse-block))
--
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: how does invisibility impact org?
2016-04-26 17:50 how does invisibility impact org? John Kitchin
@ 2016-04-26 18:36 ` Rasmus
2016-04-26 18:47 ` John Kitchin
0 siblings, 1 reply; 3+ messages in thread
From: Rasmus @ 2016-04-26 18:36 UTC (permalink / raw)
To: emacs-orgmode
John Kitchin <jkitchin@andrew.cmu.edu> writes:
> Hi, I am trying to use this code to make parts of an org-file that are
> not a verse block invisible. That part works fine, and I can also unhide
> it. However, after that, I get errors like
Isn't this the job of narrowing and widening? Though I guess this could
only show one verse block at the time.
I.e. use something like this:
(defun narrow-to-next-verse ()
(interactive)
(widen)
(let ((next-elm (search-forward-regexp "^#\\+BEGIN_VERSE" nil t)))
(when next-elm
(widen)
(goto-char next-elm)
(org-narrow-to-element)
(goto-char (point-min))
(forward-line))))
Rasmus
--
Hooray!
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: how does invisibility impact org?
2016-04-26 18:36 ` Rasmus
@ 2016-04-26 18:47 ` John Kitchin
0 siblings, 0 replies; 3+ messages in thread
From: John Kitchin @ 2016-04-26 18:47 UTC (permalink / raw)
To: Rasmus; +Cc: emacs-orgmode@gnu.org
[-- Attachment #1: Type: text/plain, Size: 1178 bytes --]
normally I would use narrowing, but I want to see all the verses in the
document at once., so I was going to make all the other text temporarily
invisible.
John
-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu
On Tue, Apr 26, 2016 at 2:36 PM, Rasmus <rasmus@gmx.us> wrote:
> John Kitchin <jkitchin@andrew.cmu.edu> writes:
>
> > Hi, I am trying to use this code to make parts of an org-file that are
> > not a verse block invisible. That part works fine, and I can also unhide
> > it. However, after that, I get errors like
>
> Isn't this the job of narrowing and widening? Though I guess this could
> only show one verse block at the time.
>
> I.e. use something like this:
>
> (defun narrow-to-next-verse ()
> (interactive)
> (widen)
> (let ((next-elm (search-forward-regexp "^#\\+BEGIN_VERSE" nil t)))
> (when next-elm
> (widen)
> (goto-char next-elm)
> (org-narrow-to-element)
> (goto-char (point-min))
> (forward-line))))
>
> Rasmus
>
> --
> Hooray!
>
>
>
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^ permalink raw reply [flat|nested] 3+ messages in thread
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