[TxMt] Re: Latex Equation Highlighting

[Charilaos Skiadas]

On Oct 26, 2006, at 2:37 AM, Jacob Rus wrote:

> William Yang wrote:
>> A little quirk with the Latex equation highlighting: if you use an  
>> equation environment like \begin{equation} or \begin{multline},  
>> everything inside of the \begin \end is highlighted as an  
>> equation, even \label{} definitions.  Shouldn't things like \label  
>> not be colored like the equation?  What do you all thing?
>
> This just means that the grammar isn't complex enough, and doesn't  
> know about \label{} yet.  It's easy to change that, and I'm sure  
> that Haris would be glad to accept a patch that fixes it...

The grammar knows about label, I think (addendum: looking at it  
again, it doesn't, hence part 1 below), just not inside math  
environment. In any case, even if we mark the label differently, it  
is still marked *also* as math. There are a number of ways of doing  
things, both involving the same first step:

1. Create a new rule in the *repository* to match the \label{...}  
syntax.
2a. Include that rule in both the LaTeX and the TeX Math bundles.  
Not, perfect because this is not a TeX command, it is a LaTeX command.
2b. Include the rule only in the text.tex.latex language, and alter  
the math environments rules so that they also include it. A bit  
better than 2a, but the label is still treated also as math.
2c. Include the rule only in the text.tex.latex language, and also  
change the begin match of the math environments, to include a  
potential \label argument. This restricts the label to be the first  
non-whitespace thing after the \begin{equation}, which is perhaps ok,  
but I guess not ok for multiline environments with different labels  
for each line. Also, this requires defining some things in multiple  
places, not a wise thing in general.

I'm not entirely crazy about any of these options, though I would say  
2b is probably the best from them. And as Jacob said, I welcome patches.

> -Jacob Rus

Haris