Re: [AUCTeX-devel] paragraph-start in modes other than latex

[Marcin Borkowski]

On 2017-04-02, at 13:41, Ikumi Keita <address@hidden> wrote:

> [To: and Subject: changed]
>
> Hi all,
>
> I thought of checking `paragraph-start' in modes other than latex and
> some questions came to my mind.  Could you see the following topics?
>
> A. plain-tex mode
> This is a quote from plain-tex.el:
> ----------------------------------------------------------------------
>   (setq paragraph-start
>       (concat
>        "\\(^[ \t]*$"
>        "\\|" (regexp-quote TeX-esc) "par\\|"
>        "^[ \t]*"
>        (regexp-quote TeX-esc)
>        "\\("
>        "begin\\|end\\|part\\|chapter\\|"
>        "section\\|subsection\\|subsubsection\\|"
>        "paragraph\\|include\\|includeonly\\|"
>        "tableofcontents\\|appendix\\|label\\|caption\\|"
>        "\\[\\|\\]"                    ; display math delimitors
>        "\\)"
>        "\\|"
>        "^[ \t]*\\$\\$"                ; display math delimitor
>        "\\)" ))
> ----------------------------------------------------------------------
> I know almost nothing about plain TeX commands.

A long-time plain user here.  (Now for the last fifteen years I've been
using LaTeX almost exclusively, but I'd been using plain heavily for
like five years.  I guess I still remember something.)

> (1) It seems that "\b" is necessary as well.

Most probably, yes.

> (2) Macros "begin", "end", "part" and so on are treated as paragraph
> starters.  Are these macros available not only in LaTeX but also plain
> TeX?  Similar question goes for "\[" and "\]" as display math
> delimiters.

AFAIR, no \begin, most probably no \part.  \end in plain is like
\end{document} (or rather, \stop) in LaTeX.  No \[, \] in plain, either,
only $$ ... $$.

I'm now wondering about ConTeXt mode, too.

> Bye,
> Ikumi Keita

Hth,

--
Marcin Borkowski