Re: Latex single dollar math delimiter question

[Nicolas Goaziou <mail@nicolasgoaziou.fr>]

Hello,

Jarmo Hurri <jarmo.hurri@iki.fi> writes:

> Based on the manual I would have expected math delimiters. Referring
> again to the manual: "single ‘$’ characters are only recognized as math
> delimiters if the enclosed text contains at most two line breaks, is
> directly attached to the ‘$’ characters with no whitespace in between,
> and if the closing ‘$’ is followed by whitespace, punctuation or a
> dash."
>
> Since the equation in my example contains no line breaks, is directly
> attached with no whitespace in between the equation and the dollar
> signs, and the closing '$' is followed by whitespace, I would expect
> math delimiter behaviour.

The manual is inaccurate. Here is the current check for $ math
delimiters:

                (and (not (memq (char-after (1+ (point)))
				'(?\s ?\t ?\n ?, ?. ?\;)))
		     (search-forward "$" nil t 2)
		     (not (memq (char-before (match-beginning 0))
				'(?\s ?\t ?\n ?, ?.)))
		     (looking-at-p
		      "\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|'\\|$\\)"))

See also: https://orgmode.org/worg/dev/org-syntax.html#Entities_and_LaTeX_Fragments

I don't know if there's a way to express it in a non-boring way in the
manual.

Regards,

-- 
Nicolas Goaziou