Carsten Dominik <address@hidden> writes:
Dear Eric,
this is fantastic.
Great, Thanks
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.
Yea, I have the following org-entites customization in my setup which
covers some of the symbol names I commonly expect. It's been growing
the more I use org-entities.
--8<---------------cut here---------------start------------->8---
(add-to-list 'org-entities
'("supseteq" "\\supseteq" t "⊇" "[superset of or
equal to]"
"[superset of or equal to]" "⊇"))
(add-to-list 'org-entities
'("subseteq" "\\subseteq" t "⊆" "[subset of or
equal to]"
"[subset of or equal to]" "⊆"))
(add-to-list 'org-entities
'("subseteq" "\\subseteq" t "⊆" "[subset of or
equal to]"
"[subset of or equal to]" "⊆"))
(add-to-list 'org-entities
'("leq" "\\leq" t "≤" "<=" "<=" "≤"))
(add-to-list 'org-entities
'("geq" "\\geq" t "≥" ">=" ">=" "≥"))
--8<---------------cut here---------------end--------------->8---
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.
agreed, maybe this would be better (using [:alnum:])? The only reason
for the restriction is to keep symbols from appearing mid way through
typing out some other symbol or word.
--8<---------------cut here---------------start------------->8---
(defun org-pretty-entities ()
(font-lock-add-keywords
nil (mapcar
(lambda (el)
(list
(concat "(?\\(" (regexp-quote "\\") (nth 0 el)
"[^[:alnum:]]" "\\)")
`(0 (progn (compose-region (match-beginning 1) (- (match-
end 1) 1)
,(nth 6 el)) nil))))
org-entities)))
--8<---------------cut here---------------end--------------->8---
Also there should be a switch for turning this on and off.
I would like to integrate this code into org-entities.el.
Those both sound great. It would take a little bit of effort to look
into how to remove font-lock keywords. If you have the time and
inclination please go ahead with this, otherwise I should be able to
take a shot at it myself in the next week or two -- I'm in the
middle of
my final exams right now.
Thanks for all your contributions, which continue to make Org-mode so
much richer.
It's my Pleasure -- Eric
- 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