Post: October 2021
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version https://git-lfs.github.com/spec/v1
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@article{OrgCitations,
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author={org, mode and Syntax, Citation and List, Mailing and Effort, Time},
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journal={Journal of Plain Text Formats},
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title={Elagent Citations with Org-Mode},
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year={2021},
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month={7},
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volume={42},
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number={1}
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pages={2-3}}
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#+title: October 2021
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#+subtitle: Release 9.5
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#+author: TEC
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#+date: 2021-10-31
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#+begin_quote
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Turns out that life became busy enough that instead of delaying, last month's
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post had to be cancelled. We're now back to business as usual though 🙂.
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#+end_quote
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There have been some cool recent developments in Org over the past two months,
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but you'll have to learn about those is next month's edition as /Org 9.5 has been
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released/ 🎉. So, let's go over some of the changes I'm most excited about, in no
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particular order. To get a more complete picture of the latest changes, see
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[[https://git.savannah.gnu.org/cgit/emacs/org-mode.git/tree/etc/ORG-NEWS?h=release_9.5#n14][ORG-NEWS]].
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* The new citation engine
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As tempted as I am to wax lyrical about the lovely new citation engine, I've
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already dedicated [[file:2021-07-31-citations.org][July's post]] to it, and so will simply highlight how versatile
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the syntax is. Combined with the ability to swap out the default backends
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(basic, CSL, natbib, and bib(la)tex) for a 3rd party backend (for example,
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provided by a package) it is capable of meeting your citation and technical
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document publishing needs, whatever they may be.
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#+caption: The full citation syntax
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[[file:figures/citation-structure-full.svg]]
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Since the announcement of org-cite, the ecosystem has continued to expand with a
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number of promising packages like Bruce D'Arcus' [[https://github.com/bdarcus/citar][citar]] (previously
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/bibtex-actions/), which currently provides what is arguably the best citation
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insertion experience.
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#+caption: Inserting a citation with the /citar/ package
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#+attr_html: :class doom-one
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[[file:figures/org-citar-insertion.png]]
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* Asynchronous session evaluation
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Since being featured in [[file:2021-05-31-async.org][May's post]], we've had the initial python support
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expanded with support for R too. I have good reason to believe that more
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backends will join this list in the future.
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To get started, just add =:async= to the header arguments of Python or R source
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blocks with a =:session=.
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* LaTeX environment =#+results= are now removed
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LaTeX environments (i.e. src_LaTeX{\begin{} ... \end{}} blocks) have been added
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to the list of =#+results= types that will be removed. This is bigger news than
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one might think, as it means that raw LaTeX environments are now a viable output
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for org-babel backends. This possesses a distinct advantage over =:results latex=
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as LaTeX environments can be rendered inline with ~org-latex-preview~ and are
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exported to more formats --- for example HTML with MathJax.
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This is likely going to be first seen in the new =ob-julia= backend (unreleased,
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currently in early development), but could well be utilised by other backends
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such as =ob-octave=, =ob-mathematica= (in contrib), =ob-python= (using ~SymPy~), =ob-calc=
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and more.
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#+caption: Rendered LaTeX representations of some Julia values
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#+attr_html: :class doom-one
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#+attr_latex: :width 0.5\linewidth
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[[file:figures/ob-julia-latexify-rendered.png]]
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* More fontification
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A number of new faces have been introduced to allow for improved theming
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capability, and better contextual hints in the agenda, namely:
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~org-agenda-date-weekend-today~, ~org-imminent-deadline~,
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~org-agenda-structure-secondary~, and ~org-agenda-structure-filter~.
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Inline export snippets are now also fontified using the ~org-tag~ and
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~font-lock-comment-face~ faces, to better stand out from surrounding text.
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* More link formatting options with org-capture
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A new formatting directive, ~%L~ has been introduced which provides the bare link
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target. This allows for links with automatically generated descriptions 🙂.
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* Export improvements
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The HTML and LaTeX backends have both been given some love in this release of
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Org.
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The HTML backend now supports customisation of the =<meta>= tags included with
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~org-html-meta-tags~, which should be particularly useful to anybody using
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=org-publish= for blogs or websites (in fact, this blog has been making use of it
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for some time now). A new variable has been introduced to help with styling,
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~org-html-content-class~ (="content"= by default) which is used as the CSS class for
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the top-level content wrapper. To further improve styling capabilities,
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~org-html-style-default~ and ~org-html-scripts~ have been changed from constants to
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customisable variables.
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The LaTeX backend (=ox-latex=) no longer has obsolete LaTeX packages in
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~org-latex-default-packages-alist~ (=grffile= and =texcomp= have been removed).
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It also now supports arbitrary =:float= argument values, and accepts a six new
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arguments (in total) for verse (=:lines=, =:center=, =:versewidth=, and =:latexcode=)
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and quote blocks (=:environment= and =:options=).
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* Project changes
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To reduce the maintainer burden, the =contrib/= folder and a collection of
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rarely-used or barely-maintained =ob-*= backends have been moved to a new repo,
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[[https://git.sr.ht/~bzg/org-contrib][org-contrib]]. Support for Emacs 24 (2012--2014) has also been dropped, and Org
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will now aim to support the three most recent major versions of Emacs.
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