# [TxMt] How to include private additions to syntax coloring?

Holger Frauenrath mail at frauenrath.com
Fri Dec 22 08:34:12 UTC 2006

Hi Haris and everybody else,

I split up my different questions into different emails.

>> So, for example, let's say I have a custom command for including
>> scheme and figures, and I would like to have that command colored
>> in a specific way; what would be the best and most forward-
>> compatible way of doing it? If I understand things correctly,
>> then, if I change the LaTeX language file directly, future updates
>> to the bundle are going to be ignored (overwritten by my changed
>> file). I guess, it would be better to put those personal additions
>> into an extra file. But what is the correct/optimal way to call/
>> include it in the LaTeX language file?
>
> I don't know what you mean about including scheme. Do you mean
> scheme code via the lstlistings environment or something like that?
> Then we should add those to the official bundle. As for figure
> environments, they should be already targeted by the scope
> mechanism, so you should be able to assign them colors as is, I
> think. Unless I misunderstand what you want to do. Both of these
> two you should also be able to do by creating your own bundle and
> including the latex grammar. However there is one tricky bit: The
> rules that match environments match the spaces before the \begin,
> so that they match from the beginning of the line (for coloring the
> background more nicely). So if your rule matches only from the
> \begin part, it does not matter whether it appears first or not,
> since the built-in rule matches EARLIER. So you would need to be
> matching those spaces as well. (I've been bitten by this myself ;) ).

Sorry for choosing a potentially confusing example. What I meant to
say is that I have a custom command for including schemes and
figures: \includescheme{scale}{name}{caption} which inserts a
centered figure environment, inserts file <name> at scale <scale>,
creates a label <name>, and inserts the caption <caption>. So, it is
not targeted by the scope mechanism ... But this just served as a
specific example.

My question was more general. In case I have a custom LaTeX command
(any command) that I want to have a syntax colored, i.e., or in case
I want to change an existing syntax color behavior, *what is the best
way to do it*?

I just don't understand yet how to do it so that it does not break
forward compatibility. I assume, it would be best to put my own
private additions/changes to the syntax coloring into a separate
language file, e.g. "LaTeX HF", instead of just writing them into the
"LaTeX" language file itself. Is that correct? But, then, how do I
either call/include it from the LaTeX file or vice versa? How do I
set up such a separate file for my private additions?

Thanks.

Holger

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