Re: Cycling visibility of blocks

From: Carsten Dominik <carsten.dominik@gmail.com>
To: Sebastian Rose <sebastian_rose@gmx.de>
Cc: emacs-orgmode@gnu.org
Subject: Re: Cycling visibility of blocks
Date: Mon, 25 May 2009 09:25:24 +0200	[thread overview]
Message-ID: <04195B46-5D81-4E64-8315-CD2085E49357@gmail.com> (raw)
In-Reply-To: <87ljomnfni.fsf@kassiopeya.MSHEIMNETZ>

On May 25, 2009, at 3:18 AM, Sebastian Rose wrote:

> Wow, this is great!
>
> And yes, it indeed makes sense to hide other blocks too, e.g. big  
> ditaa
> blocks or #+BEGIN_HTML when working on LaTeX stuff (here a `S-TAB'
> action would be great, that hides all blocks of that sort at once).
>
> In fact, I changed the `org-block-hide-src-block-regexp' to
>
>    "#\\+begin_\\w+ \\(.+\\)[ \t]*\\([ \t]+\\([^\n]+\\)\\)?\n\\([^ 
> \000]+?\\)#\\+end_src"

:-)  This is not going to work.  You need to capture the block type  
into a regexp group and then use a back reference like "#\\+end_\\1"  
at the end.

    "#\\+begin_\\w+ \\(.+\\)[ \t]*\\([ \t]+\\([^\n]+\\)\\)?\n\\([^ 
\000]+?\\)#\\+end_src"

- Carsten

>
>
> Thanks for this wonderfull snippet!
>
>
>  Sebastian
>
>
> "Eric Schulte" <schulte.eric@gmail.com> writes:
>> Hi,
>>
>> The attached file should implement this feature, just load the file  
>> and
>> then press tab while at the beginning of a source block.  Note that  
>> it
>> requires a newish version of org-mode which includes the
>> `org-tab-first-hook' variable.
>>
>> Maybe this would make sense for all org blocks, not just src blocks?
>>
>> Cheers -- Eric
>>
>>
>> ;;; org-block-hide --- hide src blocks in org-mode files
>>
>> (defvar org-block-hide-src-block-regexp "#\\+begin_src \\(.+\\) 
>> [ \t]*\\([ \t]+\\([^\n]+\\)\\)?\n\\([^\000]+?\\)#\\+end_src")
>>
>> (defun org-block-hide-ui-src-block-cycle-maybe ()
>>  (let ((case-fold-search t))
>>    (if (save-excursion
>>          (beginning-of-line 1)
>>          (looking-at org-block-hide-src-block-regexp))
>>        (progn (call-interactively 'org-block-hide-ui-src-block-cycle)
>>               t) ;; to signal that we took action
>>      nil))) ;; to signal that we did not
>>
>> (defun org-block-hide-ui-src-block-cycle ()
>>  "Cycle the visibility of the current source code block"
>>  (interactive)
>>  ;; should really do this once in an (org-mode hook)
>>  (add-to-invisibility-spec '(org-block-hide-ui . t))
>>  (message "trying out source block")
>>  (save-excursion
>>    (beginning-of-line)
>>    (if (re-search-forward org-block-hide-src-block-regexp nil t)
>>        (let ((start (- (match-beginning 4) 1)) ;; beginning of body
>>              (end (match-end 0))) ;; end of entire body
>>          (if (memq t (mapcar (lambda (overlay)
>>                                (eq (overlay-get overlay 'invisible)  
>> 'org-block-hide-ui))
>>                              (overlays-at start)))
>>              (remove-overlays start end 'invisible 'org-block-hide- 
>> ui)
>>            (overlay-put (make-overlay start end) 'invisible 'org- 
>> block-hide-ui)))
>>      (error "not looking at a source block"))))
>>
>> ;; org-tab-after-check-for-cycling-hook
>> (add-hook 'org-tab-first-hook 'org-block-hide-ui-src-block-cycle- 
>> maybe)
>>
>>
>> emacs-orgmode@gnu.org writes:
>>
>>> Hello,
>>>
>>> I perhaps have missed it in the manual, but, would it be possible to
>>> cycle visibility in blocks like in the example below ?
>>>
>>> #+BEGIN_something
>>> blah blah blah
>>> blah
>>> blah blah
>>> and so much blah yet to come
>>> #+END_something
>>>
>>> becomes
>>>
>>> #+BEGIN_something
>>> ...
>>> #+END_something
>>>
>>> It could help when you have those big BEGIN_SRC getting in the way.
>>>
>>> Thanks.
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>
>
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