Re: how to best make characters invisible in a org-derived mode

[Christian Wittern <cwittern@gmail.com>]

Hi Andreas, Hi John

Thank both of you for trying to get me on track.

On 2013-05-01 16:43, Andreas Röhler wrote:
> maybe have a look how
>
> ar-hide-bracketed-in-line-atpt
>
> for example is implemented. 
I can't actually find this function, but I get the general point from the 
files in Emacs Werkstatt.

What tripped me up originally that simply setting a region to 'invisible 
worked in fundamental mode, but not in org-mode.

I found the solution after I finally understood what
(info "(elisp) Invisible Text")
was trying to tell me:
- first set the desired region(s) to an arbitrary symbol, like my-symbol:
      (overlay-put (make-overlay beginning end)   'invisible 'my-symbol)
- next add this symbol to 'invisibility' spec :
      (add-to-invisibility-spec 'my-symbol)

After straighting this out I am now a happy camper, enjoying my uncluttered 
display.

All the best,

Christian



-- 
Christian Wittern, Kyoto