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From: Carlos Pita <carlosjosepita@gmail.com>
To: emacs-orgmode@gnu.org
Subject: Re: Feature request: simplify usage of special blocks (for beamer)
Date: Sun, 2 Dec 2018 18:05:14 -0300	[thread overview]
Message-ID: <CAELgYhey8mmqiJqtDdVg9UMJu0BNP8CK3huRwTyETQMBfPVDAg@mail.gmail.com> (raw)
In-Reply-To: <87zhtnk6cx.fsf@nicolasgoaziou.fr>

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Hi Nicolas,

fair enough if you feel it's not worth the hassle.

I'm pasting here a simple filter implementing the rule I described
above (use the special arg if present and if it doesn't conflict with
any ATTR directive for the current backend) for anyone interested, if
any at all:

(defun my-org-special-block-filter (tree backend _symbol)
  (pcase-let ((`(,prop ,fmt)
               (cond ((org-export-derived-backend-p backend 'latex)
                      '(:attr_latex ":options [%s]")))))
    (when prop
      (org-element-map tree 'special-block
        (lambda (element)
          (unless (org-element-property prop element)
            (save-excursion
              (goto-char (org-element-property :begin element))
              (when (re-search-forward "#\\+BEGIN_\\S-+[ \t]+\\(.+\\)" nil t)
                (let ((attr (format fmt (match-string-no-properties 1))))
                  (org-element-put-property element prop (list attr))))))
          nil)))))

It can easily be extended to other backends by just adding a new
clause to the cond at the beginning.

This plus a little extra font locking allows me to edit my
presentations like the attached screenshot shows. I think it's quite
an improvement over subsectioning and ignoreheading cruft but it must
be said that, although it looks nicer, it's only a marginal
improvement over special blocks plus affiliated ATTRs.

Best regards
--
Carlos

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next prev parent reply	other threads:[~2018-12-02 21:05 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-01 16:24 Feature request: simplify usage of special blocks (for beamer) Carlos Pita
2018-12-01 18:28 ` Eric S Fraga
2018-12-01 18:41   ` Carlos Pita
2018-12-01 19:23     ` Carlos Pita
2018-12-02 11:58       ` Eric S Fraga
2018-12-02 14:50         ` Carlos Pita
2018-12-02 15:30           ` Carlos Pita
2018-12-02 20:42       ` Nicolas Goaziou
2018-12-02 21:05         ` Carlos Pita [this message]
2018-12-02 11:55     ` Eric S Fraga

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