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

[Eric Schulte]

Hi Carsten,

This appears to be an issue in the HEAD (as of two weeks ago) of the
Emacs git repository.  I was able to get around this issue (and a couple
of other font-lock related issues) by stepping back to an older version
of Emacs (tag EMACS_23_2 in the git repository).

I haven't tried to go back to the Emacs development HEAD, but I assume
that they'll take care of this issue sooner or later, either way it's
not a problem with any of the code in Org-mode.

Best -- Eric

Carsten Dominik <address@hidden> writes:

> Hi Eric,
>
> have you been able to get past this issue?
>
> - Carsten
>
> On May 17, 2010, at 5:01 PM, Eric Schulte wrote:
>
>> So looking into this slightly deeper,
>>
>> I do have org-pretty-entities set to t in my config.
>>
>> Toggling entities display with C-c C-x \ has no effect.
>>
>> The value of org-highlight-latex-fragments-and-specials is nil.
>>
>> Entities are only displayed when I search for the "\\" character, no
>> other searches result in displayed entities.
>>
>> Interestingly, when starting with a fresh "emacs -Q" and only loading
>>
>> --8<---------------cut here---------------start------------->8---
>> (load-file "~/src/org/lisp/org-install.el")
>> (setq org-pretty-entities t)
>> --8<---------------cut here---------------end--------------->8---
>>
>> I have the same problem, so maybe my version of Emacs is to blame, I'm
>> using the latest from the emacs git/bzr repo
>>
>> --8<---------------cut here---------------start------------->8---
>> ~/src/emacs/src/emacs --version
>> GNU Emacs 24.0.50.1
>> Copyright (C) 2010 Free Software Foundation, Inc.
>> GNU Emacs comes with ABSOLUTELY NO WARRANTY.
>> You may redistribute copies of Emacs
>> under the terms of the GNU General Public License.
>> For more information about these matters, see the file named COPYING.
>> --8<---------------cut here---------------end--------------->8---
>>
>> When I get some more time, I'll look into this further.
>>
>> Thanks -- Eric
>>
>> Carsten Dominik <address@hidden> writes:
>>
>>> 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 <address@hidden> 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
>
> - Carsten