Re: Pretty org-entities in org-mode buffers

[Carsten Dominik <carsten.dominik@gmail.com>]

On May 16, 2010, at 11:09 PM, Eric Schulte wrote:

> Hi Carsten,
>
> Thanks for folding in this feature.
>
> I'm having some weird issues using the new entities display.  The
> entities are not fontified in my org-mode buffers despite having set  
> the
> org-pretty-entities variable to t.  However if I search
> `isearch-forward-regexp' for the "\\" character in the buffer then all
> of the entities are displayed (e.g. \sum is replaced with ∑).
>
> Any idea why the entity display is only working during a search?

One idea:  Do you have turned on org-highlight-latex-fragments-and- 
specials?

- Carsten


>
> Thanks -- Eric
>
> Carsten Dominik <carsten.dominik@gmail.com> writes:
>
>> Hi everyone,
>>
>> a modified version of Eric's code is now included into Org, I just
>> pushed it
>> to the git repo.
>>
>> You can use the command `C-c C-x \' to toggle this feature.
>>
>> The variable `org-pretty-entities' determines if this mode is on by
>> default.
>>
>> Finally, you can use
>>
>> #+STARTUP: entitiespretty
>> #+STARTUP: entitiesplain
>>
>> to change things on a per-file base.
>>
>> Thanks to Eric for this great idea.
>>
>> - Carsten
>>
>> On May 5, 2010, at 6:19 PM, Eric Schulte wrote:
>>
>>> Hi,
>>>
>>> Recently I've been making use of org-entites for exporting my greek/
>>> math
>>> heavy class notes to HTML.  I'm really loving the results.
>>>
>>> This morning I've started playing around with the below function
>>> `org-pretty-entities', which is adapted from Phil Hagelberg's
>>> `pretty-lambdas'[1].  Calling this function in an org-mode buffer  
>>> will
>>> have the effect of fontifying all org-entities text strings as the
>>> character which they represent, so \Delta is replaced with Δ,  
>>> \lambda
>>> with λ, \in with ∈, and so forth.
>>>
>>> I've just started playing with this, and I make no guarantees as to
>>> it's
>>> safety or utility, but I was very pleasantly surprised by the
>>> simplicity
>>> of the function, and how nice it's been to see my special characters
>>> appear in org-mode buffers as I type.
>>>
>>> #+begin_src emacs-lisp :results silent
>>> (defun org-pretty-entities ()
>>>   (interactive)
>>>   (font-lock-add-keywords
>>>    nil (mapcar
>>>         (lambda (el)
>>>           (list
>>>            (concat "(?\\(" (regexp-quote "\\") (nth 0 el) "[\s]" "\
>>> \)")
>>>            `(0 (progn (compose-region (match-beginning 1) (-
>>> (match-
>>> end 1) 1)
>>>                                       ,(nth 6 el)) nil))))
>>>         org-entities)))
>>>
>>> (org-pretty-entities)
>>> #+end_src
>>>
>>> To try this out, just evaluate the above code block inside of an
>>> org-mode buffer, then starting typing out org-entities.
>>>
>>> Hope others find this useful.
>>>
>>> Best -- Eric
>>>
>>> Footnotes:
>>> [1]  http://github.com/technomancy/emacs-starter-kit/blob/master/starter-kit-defuns.el#L135
>>>
>>>
>>> _______________________________________________
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>>> http://lists.gnu.org/mailman/listinfo/emacs-orgmode
>>
>> - Carsten

- Carsten