unexpected _ when reading latex

unexpected _ when reading latex

[Jeremy Theler]

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Hi all. Pandoc is complaining about an unexpected underscore (the one after D$) when parsing a complex (yet still valid) LaTeX inline math expression:


The density of heavy water is $\rho_\text{D$_2$O}$





I understand the parsing logic is complex because there are nested levels. Can a similar logic be implemented in Pandoc to handle this expression?



regards
--
jeremy


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Re: unexpected _ when reading latex

[John MacFarlane]

What version of pandoc are you using?
It works fine for me with the latest.

Jeremy Theler <jeremy-24em0bpozeFWk0Htik3J/w@public.gmane.org> writes:

> Hi all. Pandoc is complaining about an unexpected underscore (the one after D$) when parsing a complex (yet still valid) LaTeX inline math expression:
>
>
> The density of heavy water is $\rho_\text{D$_2$O}$
>
>
>
>
>
> I understand the parsing logic is complex because there are nested levels. Can a similar logic be implemented in Pandoc to handle this expression?
>
>
>
> regards
> --
> jeremy
>
>
> -- 
> You received this message because you are subscribed to the Google Groups "pandoc-discuss" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/9253e5117262e3e9ce81c159dac68106fbd2b6ac.camel%40seamplex.com.
> For more options, visit https://groups.google.com/d/optout.

Re: unexpected _ when reading latex

[Jeremy Theler]

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Hey John
The attached mwe.tex fails even with https://github.com/jgm/pandoc/releases/download/2.1.3/pandoc-2.1.3-1-amd64.deb
$ pandoc mwe.tex  


Error at "source" (line 1, column 54):

unexpected Tok "source" (line 1, column 54) Symbol "_"

expecting end of input

donde~$\rho$ es la densidad del acero, $\rho_\text{D$_2$O}=\SI{866}{\kilogram\per\cubic\meter}$ la densidad del agua pesada a~$\SI{250}{
\celsius}$, y $r_i$ y $r_o$ los radios internos y externos respectivamente.

                                                     ^


regards--jeremy thelerwww.seamplex.com
On Fri, 2018-04-20 at 08:09 -0700, John MacFarlane wrote:
> What version of pandoc are you using?It works fine for me with the latest.
> Jeremy Theler <jeremy-24em0bpozeFWk0Htik3J/w@public.gmane.org> writes:
> Hi all. Pandoc is complaining about an unexpected underscore (the one after D$) when parsing a complex (yet still valid) LaTeX inline math expression:
> 
> The density of heavy water is $\rho_\text{D$_2$O}$
> 
> 
> 
> 
> I understand the parsing logic is complex because there are nested levels. Can a similar logic be implemented in Pandoc to handle this expression?
> 
> 
> regards--jeremy
> 
> -- You received this message because you are subscribed to the Google Groups "pandoc-discuss" group.To unsubscribe from this group and stop receiving emails from it, send an email to pandoc-discuss+unsubscribe@googlegroups.com.To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF5qMzOjczn9V@public.gmane.org view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/9253e5117262e3e9ce81c159dac68106fbd2b6ac.camel%40seamplex.com.For more options, visit https://groups.google.com/d/optout.

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donde~$\rho$ es la densidad del acero, $\rho_\text{D$_2$O}=\SI{866}{\kilogram\per\cubic\meter}$ la densidad del agua pesada a~$\SI{250}{\celsius}$, y $r_i$ y $r_o$ los radios internos y externos respectivamente.

Re: unexpected _ when reading latex

[John MacFarlane]

I see what is happening here.

The LaTeX reader parses math by reading to the next `$` character.
So it is seeing math `\rho_\text{D` followed by text `_2`, and the
underscore in plain text is not valid.

The math parser should be sensitive to `\text` environments (and
anything else that can contain `$`).

Re: unexpected _ when reading latex

[John MacFarlane]

Please submit a bug report on the GitHub tracker for jgm/pandoc.

Re: unexpected _ when reading latex

[Jeremy Theler]

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Done

https://github.com/jgm/pandoc/issues/4576


Thanks
--
jeremy
www.seamplex.com


On Fri, 2018-04-20 at 21:20 -0700, John MacFarlane wrote:
> Please submit a bug report on the GitHub tracker for jgm/pandoc.
> 
> 

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