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[Orgmode] Re: suggestion: simplify depth stepping of document structure
From: |
Michael Brand |
Subject: |
[Orgmode] Re: suggestion: simplify depth stepping of document structure (outline) visibility |
Date: |
Wed, 14 Oct 2009 14:24:50 +0200 |
User-agent: |
Thunderbird 2.0.0.23 (Windows/20090812) |
Hi all,
One reply is not that much feedback yet..., maybe I tried to be detailed but
was not clear enough? Ok, I thought after having submitted a few bug reports
before, it would be good to contribute in a way a bit more constructive this
time ;-) and implemented what I have described in my previous post for headings
(not for list elements).
For those who are interested in trying it out:
First you will have to upgrade to org-version 6.31a or newer (or take into
account
http://thread.gmane.org/gmane.emacs.orgmode/17441)
and then put the code at the end of this post e. g. into your .emacs file and start a
new Emacs. Use `C->' and `C-<' repeatedly back and forth on your files that
have at least a few heading levels and tell how useful you find it.
I find the usage of my-orgstruct-dive very intuitive in contrast to the
complicated look of both the description in my previous post and my
implementation here. As a nice side effect this function also brings two
functionalities from outline-mode to org-mode which I am missing in org-mode:
outline-mode-`C-c C-q' (hide everything lower than heading level at point
(cursor)) and outline-mode-`C-c C-i' (show direct subheadings but not body of
heading at point).
------------------------------------------------------------
(global-set-key (kbd "C->") 'my-orgstruct-dive)
(global-set-key (kbd "C-<") 'my-orgstruct-dive-out)
(defvar my-orgstruct-dive-level 0)
(defun my-orgstruct-dive-out ()
"Wrapper to simplify comparison with last-command in my-orgstruct-dive"
(interactive)
(my-orgstruct-dive t))
(defun my-orgstruct-dive (&optional dive-out)
"Make visible one heading level more or less.
return value: undefined.
dive-out: If nil dive in, else dive out."
(interactive)
;; determine new level
(if (or (eq last-command 'my-orgstruct-dive)
(eq last-command 'my-orgstruct-dive-out))
;; command repetition, increase/decrease level
(setq my-orgstruct-dive-level
(+ my-orgstruct-dive-level (if dive-out '-1 '1)))
;; init level to that of point
(setq my-orgstruct-dive-level
(if (outline-on-heading-p)
(org-reduced-level
(save-excursion (beginning-of-line) (org-outline-level)))
'0)))
;; update heading visibility
(when (or (<= my-orgstruct-dive-level 0) (<= 1000 my-orgstruct-dive-level))
(setq my-orgstruct-dive-level 1))
(org-shifttab my-orgstruct-dive-level))
------------------------------------------------------------
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