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Re: [Orgmode] Pretty org-entities in org-mode buffers


From: Carsten Dominik
Subject: Re: [Orgmode] Pretty org-entities in org-mode buffers
Date: Fri, 7 May 2010 09:11:30 +0200

Dear Eric,

this is fantastic. This is kind of like X-symbol, only that I can just write my trusted LaTeX macros and get all those characters. Makes me think that I need to add a few more symbols that I commonly use in math expressions.

I am wondering if we could be a bit more generous with the regular expression. For example, I would love for $\alpha=\beta$ to show the symbols as well.
Also there should be a switch for turning this on and off.

I would like to integrate this code into org-entities.el.

Thanks for all your contributions, which continue to make Org-mode so much richer.

- 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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- Carsten







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