Re: Improve context syntax file

On Sep 26, 2013 2:18 PM, "Marco" <lists@homerow.info> wrote:
>
> On 2013–09–26 Nikolay Pavlov wrote:
>
> > > Since there is little chance that an underscore will immediately follow a
> > > control sequence anyway, I don't think defining it for the entire syntax
> > file
> > > will cause any problem.
> >
> > It is very common in LaTeX math:
> >
> >     \int_a^b
>
> "a" is not a control sequence.

Assuming _ is defined to be a part of a command this will incorrectly highlight _a with the same color as \int. Thus you cannot just follow that advice.

> > . Can't say anything about context though.
>
> The maths looks almost the same, it's mostly TeX anyway.
>
> > In LaTeX/TeX syntax file AFAIR _ is marked as an error outside of
> > math regions though.
>
> Not so in ConTeXt. Underscores and circumflex accents are valid
> input:
>
>   \starttext
>     This_is_valid  %% the _ is not marked as error, correct
>     So ^ is ^ this %% the ^ is marked as error, although it's valid input
>   \stoptext
>
> Marco

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