emacs org mode publish to latex failed with strings like "__aaa_cc__"

emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Xu Jingtao]

Hi all:

If I write some string like "__aaa_cc__" in org file,then publish it to pdf using latex,
it will failed and the output is wrong.

even I can use ~__aaa_cc__~, it's not a good way do it.

Can you fix it or I am wrong?
___________________________________
With Best Regards.
jingtao.

Re: emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Nick Dokos]

Xu Jingtao <jingtaozf@gmail.com> wrote:

> Hi all:
> 
> If I write some string like "__aaa_cc__" in org file,then publish it to pdf using latex,
> it will failed and the output is wrong.
> 
> even I can use ~__aaa_cc__~, it's not a good way do it.
> 
> Can you fix it or I am wrong?

By default, underscores indicate subscripts (a tradition that comes from
LaTeX syntax - similarly, carets indicate superscripts). If you don't
want that, you can add

#+OPTIONS: ^:nil

at the top of the file: this option disables superscripts and subscripts.

See

	 (info "(org) Export options")

Nick

Re: emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Xu Jingtao]

Hi Nick:

I had added the option to my org file.

What I want to ensure is that this is maybe a bug of emacs org mode.

I know "_a string_" will try to convert to underline string in latex,
by emacs variable org-export-latex-emphasis-alist.
Maybe this is why it is translated into wrong latex codes.


> Xu Jingtao <jingtaozf@gmail.com> wrote:
> 
> > Hi all:
> > 
> > If I write some string like "__aaa_cc__" in org file,then publish it to pdf using latex,
> > it will failed and the output is wrong.
> > 
> > even I can use ~__aaa_cc__~, it's not a good way do it.
> > 
> > Can you fix it or I am wrong?
> 
> By default, underscores indicate subscripts (a tradition that comes from
> LaTeX syntax - similarly, carets indicate superscripts). If you don't
> want that, you can add
> 
> #+OPTIONS: ^:nil
> 
> at the top of the file: this option disables superscripts and subscripts.
> 
> See
> 
> 	 (info "(org) Export options")
> 
> Nick
> 
> 

___________________________________
With Best Regards.
jingtao.

Re: emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Nicolas Goaziou]

Hello,

Xu Jingtao <jingtaozf@gmail.com> writes:

> What I want to ensure is that this is maybe a bug of emacs org mode.
>
> I know "_a string_" will try to convert to underline string in latex,
> by emacs variable org-export-latex-emphasis-alist.
> Maybe this is why it is translated into wrong latex codes.

Why is it wrong LaTeX code? You're asking Org to put an underline there,
and there you have.

Nevertheless, I think it would be useful to have an entity for
underscore character. Something like:

  ("us" "\\_" nil "_" "_" "_" "_")


Regards,

-- 
Nicolas Goaziou

Re: emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Nick Dokos]

Xu Jingtao <jingtaozf@gmail.com> wrote:

> Hi Nick:
> 
> I had added the option to my org file.
> 
> What I want to ensure is that this is maybe a bug of emacs org mode.
> 
> I know "_a string_" will try to convert to underline string in latex,
> by emacs variable org-export-latex-emphasis-alist.
> Maybe this is why it is translated into wrong latex codes.
> 
> 

Ah, OK - the problem is that no matter how the option is set, the output
still leads to latex errors and no PDF is produced (at least with the
old exporter - I haven't tried with ngz's new one, but that woule be a
good experiment to try).

Now that I've tried it, I think you are right: it is a bug in the old
exporter, in that it should produce legal latex either way.

Nick

> > Xu Jingtao <jingtaozf@gmail.com> wrote:
> > 
> > > Hi all:
> > > 
> > > If I write some string like "__aaa_cc__" in org file,then publish it to pdf using latex,
> > > it will failed and the output is wrong.
> > > 
> > > even I can use ~__aaa_cc__~, it's not a good way do it.
> > > 
> > > Can you fix it or I am wrong?
> > 
> > By default, underscores indicate subscripts (a tradition that comes from
> > LaTeX syntax - similarly, carets indicate superscripts). If you don't
> > want that, you can add
> > 
> > #+OPTIONS: ^:nil
> > 
> > at the top of the file: this option disables superscripts and subscripts.
> > 
> > See
> > 
> > 	 (info "(org) Export options")
> > 
> > Nick
> > 
> > 
> 
> ___________________________________
> With Best Regards.
> jingtao.
> 

Re: emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Nick Dokos]

Nicolas Goaziou <n.goaziou@gmail.com> wrote:

> Hello,
> 
> Xu Jingtao <jingtaozf@gmail.com> writes:
> 
> > What I want to ensure is that this is maybe a bug of emacs org mode.
> >
> > I know "_a string_" will try to convert to underline string in latex,
> > by emacs variable org-export-latex-emphasis-alist.
> > Maybe this is why it is translated into wrong latex codes.
> 
> Why is it wrong LaTeX code? You're asking Org to put an underline there,
> and there you have.
> 

The old exporter latex output doesn't compile.

I tried the new exporter does it correctly, with either setting of the option.

Nick

> Nevertheless, I think it would be useful to have an entity for
> underscore character. Something like:
> 
>   ("us" "\\_" nil "_" "_" "_" "_")
> 
> 

Re: emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Nicolas Goaziou]

Hello,

Nick Dokos <nicholas.dokos@hp.com> writes:

> The old exporter latex output doesn't compile.

Ah ok, I only tried with the experimental one.

> I tried the new exporter does it correctly, with either setting of the
> option.

The new one exports "__aaa_b__" as "\underline{\underline{aaa$_b$}}".
I think the OP wants a verbatim "\_\_aaa\_b\_\_" instead.

Hence my underscore suggestion, which would also solve the UNDER_LINE
problem without resorting to (unsupported) tricks like UNDER\_LINE.


Regards,

-- 
Nicolas Goaziou

Re: emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Nick Dokos]

Nicolas Goaziou <n.goaziou@gmail.com> wrote:

> Hello,
> 
> Nick Dokos <nicholas.dokos@hp.com> writes:
> 
> > The old exporter latex output doesn't compile.
> 
> Ah ok, I only tried with the experimental one.
> 
> > I tried the new exporter does it correctly, with either setting of the
> > option.
> 
> The new one exports "__aaa_b__" as "\underline{\underline{aaa$_b$}}".
> I think the OP wants a verbatim "\_\_aaa\_b\_\_" instead.
> 

That can be done with ~__aaa_b__~ though.

Nick

> Hence my underscore suggestion, which would also solve the UNDER_LINE
> problem without resorting to (unsupported) tricks like UNDER\_LINE.
> 
> 
> Regards,
> 
> -- 
> Nicolas Goaziou
> 

Re: emacs org mode publish to latex failed with strings like "__aaa_cc__"

[Nicolas Goaziou]

Nick Dokos <nicholas.dokos@hp.com> writes:

>> The new one exports "__aaa_b__" as "\underline{\underline{aaa$_b$}}".
>> I think the OP wants a verbatim "\_\_aaa\_b\_\_" instead.
>> 
>
> That can be done with ~__aaa_b__~ though.

Yes, but I assume that aaa could also contain other Org syntax, like an
entity.

So "__a\alpha{}a_b__" is still a problem.