Re: Bug: Math mode doesn't work if followed by a dash [9.4 (nil @ /home/gutin/.emacs.d/.local/straight/build/org-mode/)]

["Berry, Charles" via "General discussions about Org-mode." <emacs-orgmode@gnu.org>]

See below.

> On Sep 28, 2020, at 11:42 AM, Richard Lawrence <wyley.r@gmail.com> wrote:
> 
> Hi Gutin,
> 
> gutin <jkabrg@gmail.com> writes:
> 
>> What I meant is that if you type
>> 
>>  $*$-algebra
>> 
>> and hit C-c C-x C-l, then the "$*$" doesn't get replaced with a
>> mathematical image. A similar problem happens when you export to Latex:
>> The dollar signs get escaped.
> 
> I believe this is intentional. There are too many other uses of dollar
> signs that people might want to use in Org documents that might be
> broken if Org treated them as math mode delimiters; so the regexp that
> matches math mode delimiters is deliberately limited in scope.

[rest deleted]

The case Gutin describes conforms to the documentation, viz. `$x\beta$-` should produce math mode LaTeX as I read the next paragraph. 

From (info "(org) LaTeX fragments"):

   • Text within the usual LaTeX math delimiters.  To avoid conflicts
     with currency specifications, 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.

But the $...$ and $$...$$ seem fragile. I recall advice to avoid them in favor of \(...\) and \[...\].

FWIW, my sanity has been aided by using yf/org-electric-dollar[1], which inserts `\(\)` when I type `$` and leaves point where you need it to enter math mode LaTex. A dash after the closing parenthesis is no problem.

HTH,

Chuck


[1] https://orgmode.org/list/87vc913oh5.fsf@yahoo.fr/
;; from Nicolas Richard <theonewiththeevillook@yahoo.fr>
;; Date: Fri, 8 Mar 2013 16:23:02 +0100
;; Message-ID: <87vc913oh5.fsf@yahoo.fr>