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From: Ihor Radchenko <yantar92@gmail.com>
To: "Rudolf Adamkovič" <salutis@me.com>
Cc: "Sébastien Miquel" <sebastien.miquel@posteo.eu>,
	emacs-orgmode <emacs-orgmode@gnu.org>,
	"Eric S Fraga" <e.fraga@ucl.ac.uk>
Subject: Re: [PATCH] Add support for $…$ latex fragments followed by a dash
Date: Thu, 27 Jan 2022 16:28:10 +0800	[thread overview]
Message-ID: <87r18t7fc5.fsf@localhost> (raw)
In-Reply-To: <m2y232cta1.fsf@me.com>

Rudolf Adamkovič <salutis@me.com> writes:

> Let $r_i$ denote the \(i\)-th rotation of $t$ with a suffix of $\ell|t|$
> characters deleted, for […]
>
> Me, if I could, I would pay money for this feature, for it would allow
> me to use $$ consistently, focusing on mathematics instead of markup
> idiosyncrasies of "rotation $i$" versus "\(i\)-th rotation".

Would it improve things for you if we change how \(...\) _looks_ in Org
buffers?

The problem with parsing is more than just supporting $i$-th and
similar. For example, AMS style guide explicitly advises against using
$i$-th in favour of $i$th [1]:

    Do not hyphenate “th” expressions: xth, not x-th or xth .

We can theoretically make a change to support "-", but then it will be
logical to support $i$th as well. (If we don't some users will still be
confused after trying to write $i$th and then not getting the expected
results). In this question, it would make sense to implement
all-or-everything approach. Otherwise, confusion (like raised in this
thread) will be inevitable.

However, from point of view of Org mode parser, supporting $i$th is a
nightmare.  Remember that Org mode is _not_ LaTeX and we have to support
a lot more frivolous syntax (even in LaTeX, runaway $ is often a source
of cryptic compilation errors). Currently, we _must_ rely on heuristics
to determine $$-style latex fragments. I do not know any way to support
$$ syntax without creating deviations from LaTeX. Extending the
heuristics will not resolve the underlying ambiguity of $$ syntax, just
hide it within even more obscure cases.

Given the raised concerns, may we solve the issue with too verbose
\(...\) unambiguous syntax using the following approach:
1. Fontify \(...\) replacing the brackets with a single character. For
   example:

      \(...\) -> ⁅...⁆

2. Provide convenient way to input \(\) brackets through
   electric-pair-mode or trough org-cdlatex-mode.

Best,
Ihor

[1] https://www.ams.org/publications/authors/AMS-StyleGuide-online.pdf


  reply	other threads:[~2022-01-27  8:49 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-24 16:42 Sébastien Miquel
2022-01-25  7:56 ` Eric S Fraga
2022-01-25 10:32   ` Sébastien Miquel
2022-01-26 17:15   ` Rudolf Adamkovič
2022-01-27  8:28     ` Ihor Radchenko [this message]
2022-01-27 19:15       ` Tim Cross
2022-01-28 14:37         ` Max Nikulin
2022-01-28 16:37           ` Timothy
2022-01-30 15:28             ` Max Nikulin
2022-02-01 14:26               ` Max Nikulin
2022-01-27 19:34       ` Sébastien Miquel
2022-02-01 21:00       ` Rudolf Adamkovič
2022-02-02  2:48         ` João Pedro de Amorim Paula
2022-02-06 19:45           ` Rudolf Adamkovič
2022-02-07  0:00             ` Tim Cross
2022-01-26  6:33 ` Tom Gillespie
2022-01-26 17:49   ` Sébastien Miquel
2022-01-26 21:49     ` Tom Gillespie
2022-01-27 19:11       ` Sébastien Miquel
2022-01-25 18:09 Goran Zuzic
2022-01-27 18:54 autofrettage

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