[TxMt] Regex and grammar language

hello

I work actually on a new bundle LaTeX_Author and I would like If someone have an idea to code the control's structures below :

I think that's that's very common in a lot of languages :

% from package ifthen.sty

* \ifthenelse{test}{then clause}{else clause}

* \whiledo{test}{while clause}

% from package pgffor.sty

* \foreach \var in {list}{ }

\from TeX

* @for\var:={list}\do{ }

I would like to have a color for the control words and for {}

Thanks

Regards Alain

PS : i've a problem to understand this line :

{ name = 'meta.space-after-command.latex'; match = '(?=\s)(?<=\[\w@]|\[\w@]{2}|\[\w@]{3}|\[\w@]{4}|\[\w@] {5}|\[\w@]{6})\s';