bug#58233: Latex style files shifts code with underscores

bug#58233: Latex style files shifts code with underscores

[uzibalqa via Bug reports for GNU Emacs, the Swiss army knife of text editors]

I am working on some latex style files and have noticed that code with underscores gets displayed
as subscript notation (characters get shifted downwards) rather than showing code as it should be.

Consequently, the following looks extremely weird.

\cs_new_protected:Nn \__hagbard_newtheorem_parent:nnn
 {
  \newtheorem{#1_inner}[#3]{\color{\l__hagbard_theorem_setcolor_tl}#2}
 }
\cs_generate_variant:Nn \__hagbard_newtheorem_parent:nnn { VVV }

bug#58233: Latex style files shifts code with underscores

[Lars Ingebrigtsen]

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uzibalqa <uzibalqa@proton.me> writes:

> I am working on some latex style files and have noticed that code with underscores gets displayed
> as subscript notation (characters get shifted downwards) rather than showing code as it should be.
>
> Consequently, the following looks extremely weird.
>
> \cs_new_protected:Nn \__hagbard_newtheorem_parent:nnn
>  {
>   \newtheorem{#1_inner}[#3]{\color{\l__hagbard_theorem_setcolor_tl}#2}
>  }
> \cs_generate_variant:Nn \__hagbard_newtheorem_parent:nnn { VVV }

I've managed to repress all knowledge of .sty files I once had.

Emacs currently uses latex-mode to display .sty files.  In LaTeX,
underscores aren't allowed in identifiers like this, are they?

So it seems like the solution here would be to default
tex-fontify-script to nil in .sty files, which seems to fix this
specific problem.  But the fontification is still pretty weird:


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I.e., if this is valid .sty syntax, then latex-mode doesn't really have
support for it at all, I think?

bug#58233: Latex style files shifts code with underscores

[uzibalqa via Bug reports for GNU Emacs, the Swiss army knife of text editors]

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------- Original Message -------
On Sunday, October 2nd, 2022 at 12:41 PM, Lars Ingebrigtsen <larsi@gnus.org> wrote:


> uzibalqa uzibalqa@proton.me writes:
> 
> > I am working on some latex style files and have noticed that code with underscores gets displayed
> > as subscript notation (characters get shifted downwards) rather than showing code as it should be.
> > 
> > Consequently, the following looks extremely weird.
> > 
> > \cs_new_protected:Nn \__hagbard_newtheorem_parent:nnn
> > {
> > \newtheorem{#1_inner}[#3]{\color{\l__hagbard_theorem_setcolor_tl}#2}
> > }
> > \cs_generate_variant:Nn \__hagbard_newtheorem_parent:nnn { VVV }
> 
> 
> I've managed to repress all knowledge of .sty files I once had.
> 
> Emacs currently uses latex-mode to display .sty files. In LaTeX,
> underscores aren't allowed in identifiers like this, are they?
> 
> So it seems like the solution here would be to default
> tex-fontify-script to nil in .sty files, which seems to fix this
> specific problem. But the fontification is still pretty weird:
> 
> 
> I.e., if this is valid .sty syntax, then latex-mode doesn't really have
> support for it at all, I think?

It is the latest L3 Programming Layer Interface for Latex.

bug#58233: Latex style files shifts code with underscores

[Lars Ingebrigtsen]

uzibalqa <uzibalqa@proton.me> writes:

> It is the latest L3 Programming Layer Interface for Latex.

Then I guess somebody will have to write code to support this new
language -- fixing just the subscripts doesn't seem to make much sense.

Here's a pointer to get somebody that wants to work on this started:

https://www.alanshawn.com/latex3-tutorial/#why-latex3