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From: Ihor Radchenko <yantar92@posteo.net>
To: "Juan Manuel Macías" <maciaschain@posteo.net>,
	"Daniel Fleischer" <danflscr@gmail.com>
Cc: Max Nikulin <manikulin@gmail.com>,  emacs-orgmode@gnu.org
Subject: Re: Line breaks and brackets in LaTeX export (was: [bug] `org-latex-line-break-safe' breaks the export of verse blocks to LaTeX)
Date: Mon, 17 Oct 2022 09:04:39 +0000	[thread overview]
Message-ID: <87edv6izx4.fsf@localhost> (raw)
In-Reply-To: <87a65vitbz.fsf_-_@posteo.net>

Juan Manuel Macías <maciaschain@posteo.net> writes:

> The solution of adding \relax or \empty is a good one. The problem is
> when it is applied massively and indiscriminately, bearing in mind that
> it is to prevent a problem that is, frankly, very rare. \empty is
> unlikely to have any side effects, but still, I don't like Org making
> these decisions for me and adding LaTeX code that I didn't ask for, in
> form or quantity. Isn't it possible to be more selective, like Pandoc
> does (I think), and add what needs to be added only when the problem is
> present? I don't know if the Pandoc thing has already been mentioned in
> past discussions, because these days I haven't been paying attention to
> the list.
>
> In any case, I would prefer: a) a selective solution; and if a) is not
> possible, at least b) a defcustom.

I tried to add the safe version of page break everywhere where there is
a risk of a page break followed by square brackets.

The key point: A valid Org file must be exported to a valid LaTeX file.

If you know a selective solution, patches are welcome. (I am also CCing
Daniel).

I see no issue with defcustom in general, but can you explain what
practical problems it is going to solve? I am not talking about
aesthetics of the exported LaTeX.

> This is an example I came up with of how it could be fixed selectively
> in LaTeX (big, big caveat: it's just a proof of concept and likely to
> produce errors in other contexts. I think if a LaTeX package to fix this
> isn't already out, it is either because the problem is very rare and the
> solution for particular cases is known, or because there are drawbacks
> inherent to LaTeX that I can't figure out right now):
>
> \makeatletter
>
> \def\my@protectlbrack{
>   \@ifnextchar{[}{\relax}{}
>   \@ifnextchar{*}{\relax}{}
> }
>
> \let\old@break\\
> \def\\{%
>   \old@break\my@protectlbrack}
>
> %% for tables
>
> \let\old@tabularcr\@tabularcr
> \def\@tabularcr{%
>   \old@tabularcr\my@protectlbrack}
>
> % for use the old commands
>
> \newcommand\oldbreak{\old@break}
> \newcommand\oldbreakt{\old@tabularcr}
>
> \makeatother
>
> \begin{document}
>
> lorem\\
> [ipsum]
>
> lorem\\
> *ipsum
>
> \begin{tabular}{cccc}
> a & a & a & a \\
> [a] & a & a & a \\
> *a & a & a & a \\
> \end{tabular}
>
>
> \end{document}

Won't it make it impossible to use
@@latex:\\@@
@@latex:[1em]@@

deliberately?

Note that we may also replace \\\empty with a single custom command. It
will look a bit cleaner. Not sure if it is any different from your
approach.

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>


  reply	other threads:[~2022-10-17  9:08 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-15 21:35 [bug] `org-latex-line-break-safe' breaks the export of verse blocks to LaTeX Juan Manuel Macías
2022-10-16  3:24 ` Ihor Radchenko
2022-10-16 12:08   ` Juan Manuel Macías
2022-10-16 15:04 ` Max Nikulin
2022-10-16 16:33   ` Verse block and separations (was: [bug] `org-latex-line-break-safe' breaks the export of verse blocks to LaTeX) Juan Manuel Macías
2022-10-17  8:54     ` Ihor Radchenko
2022-10-18  9:39       ` Verse block and separations Juan Manuel Macías
2022-10-17 14:48     ` Verse block and separations (was: [bug] `org-latex-line-break-safe' breaks the export of verse blocks to LaTeX) Max Nikulin
2022-10-19 11:08     ` Max Nikulin
2022-10-19 11:24       ` Verse block and separations Juan Manuel Macías
2022-10-16 17:14   ` Line breaks and brackets in LaTeX export (was: [bug] `org-latex-line-break-safe' breaks the export of verse blocks to LaTeX) Juan Manuel Macías
2022-10-17  9:04     ` Ihor Radchenko [this message]
2022-10-17 11:30       ` Line breaks and brackets in LaTeX export Juan Manuel Macías
2022-10-17 11:47         ` Ihor Radchenko
2022-10-17 12:27           ` Juan Manuel Macías
2022-10-17 15:01         ` Juan Manuel Macías
2022-10-17 16:46           ` Max Nikulin
2022-10-17 18:04             ` Juan Manuel Macías
2022-10-18  4:41               ` Ihor Radchenko
2022-10-18 14:23                 ` Juan Manuel Macías
2022-10-19  3:57                   ` Ihor Radchenko
2022-10-19  5:11                     ` Max Nikulin
2022-10-19 11:16                       ` Juan Manuel Macías
2022-10-19 12:30                         ` Juan Manuel Macías
2022-10-19 17:07                           ` Max Nikulin
2022-10-20 16:55                             ` Juan Manuel Macías
2022-10-21  3:34                               ` Ihor Radchenko
2022-10-21 16:38                                 ` Max Nikulin
2022-10-21 19:32                                   ` Juan Manuel Macías
     [not found]                         ` <ac290c60-3b54-5521-eb16-82e6611dc6e2@gmail.com>
2022-10-20 17:07                           ` Juan Manuel Macías
2022-10-29  2:36                     ` Ihor Radchenko
2022-11-13 17:01                       ` Max Nikulin
2022-10-18  4:39             ` Ihor Radchenko
2022-10-19 17:12               ` Max Nikulin
2022-10-20  5:07                 ` Ihor Radchenko
2022-10-20 17:15                   ` Max Nikulin
2022-10-21  3:41                     ` Ihor Radchenko
2022-10-21 16:32                       ` Max Nikulin
2022-10-22  5:15                         ` Ihor Radchenko
2022-10-22 12:26                           ` Juan Manuel Macías
2022-10-22 15:55                           ` Max Nikulin
2022-11-01  1:51                             ` Ihor Radchenko
2022-11-01 16:07                               ` Max Nikulin
2022-11-02  6:44                                 ` Ihor Radchenko
2022-11-02  6:46                                   ` Ihor Radchenko
2022-11-02 15:27                                     ` Max Nikulin
2022-11-03  6:15                                       ` Ihor Radchenko
2022-11-03 15:00                                         ` Juan Manuel Macías
2022-11-03 15:33                                           ` Max Nikulin
2022-11-03 15:48                                             ` Juan Manuel Macías
2022-11-04  4:23                                             ` Ihor Radchenko
2022-11-04  5:40                                               ` Max Nikulin
2022-11-05  5:30                                                 ` Ihor Radchenko

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