From: John Kitchin <jkitchin@andrew.cmu.edu>
To: Eric S Fraga <e.fraga@ucl.ac.uk>
Cc: emacs-orgmode@gnu.org
Subject: Re: parsing of emphasis versus links
Date: Fri, 17 Mar 2017 15:32:27 -0400 [thread overview]
Message-ID: <m2r31vem2c.fsf@andrew.cmu.edu> (raw)
In-Reply-To: <878to5dmvc.fsf@ucl.ac.uk>
I can not reproduce all the things you report.
I think part of the problem is [calc:]. I have to have at least two
characters of path to get a link that is colored.
Eric S Fraga writes:
> Hello,
>
> I have been playing with using embedded calc equations in org mode. I
> have tried filters and with org emphasis markers but finally have come
> around to using the new org link capabilities. Thank you John for
> these!
>
> I've defined the following:
>
> #+begin_src emacs-lisp
> (org-link-set-parameters
> "calc"
> :export (lambda (path desc backend)
> (cond
> ((eq 'latex backend)
> (format "\\texttt{%s}" desc))))
> :face '(:foreground "chartreuse"))
> #+end_src
>
> which I then use like this:
>
> #+begin_src org
> [[calc:][Pv := 10^(6.886 - 1175.817 / (100 + 224.867)) => 1847.653]]
> #+end_src
>
> and with appropriate settings for calc [1], calc can manipulate and
> evaluate the expressions. So far, so good.
>
> Two minor issues:
>
> 1. the fontification doesn't colour the links in the colour I would like
> (chartreuse, #7fff00).
I get partial chartreuse, but there are some fontlock that can go on
top, e.g. if it looks like a latex fragment.
>
> 2. if I have two expressions close enough, both with := and =>
> operators, org seems to get confused and interprets two of the =
> symbols, each from one expression, as emphasis markers, as in this
> example:
>
> #+begin_src org
> [[calc:][y := 3 x - 5 => 55]] [[calc:][z := sqrt(y) => 7.416]]
> #+end_src
I can reproduce the issue above, but I have no way to help improve it.
This particular case looks like emphasis from a simple regexp pov.
Fixing it might require checking that the start/end are in the
same org-element maybe.
>
> Screenshot attached showing both problems: colour and second = sign
> disappearing in first link and first = sign in second link.
>
> Any suggestions on how to improve/fix these aspects? Both are minor
> presentation issues and everything else is working very well. Calc
> allows me to work with these expressions easily in org now!
>
> Many thanks,
> eric
>
>
> Footnotes:
> [1] Settings using calc: links:
>
> #+begin_src emacs-lisp
> (defun esf/org-mode-calc-settings ()
> (setq calc-embedded-open-formula "\\[\\[calc:]\\["
> calc-embedded-open-new-formula "[[calc:]["
> calc-embedded-close-formula "]]"
> calc-embedded-close-new-formula "]]"))
> (add-hook 'org-mode-hook #'esf/org-mode-calc-settings)
> #+end_src
--
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu
next prev parent reply other threads:[~2017-03-17 19:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-16 19:48 parsing of emphasis versus links Eric S Fraga
2017-03-17 19:32 ` John Kitchin [this message]
[not found] ` <ddb8a56dba05452a83cf00b9166123bb@HE1PR01MB1898.eurprd01.prod.exchangelabs.com>
2017-03-18 10:18 ` Eric S Fraga
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