mark LaTeX keywords in listings

Question

I am using this code to define keywords for listings

\lstdefinestyle{demostyle}{
    columns=flexible,
    keepspaces=true,    
    basicstyle=\small\ttfamily,
    language = [LaTeX]TeX,
    morekeywords={textwidth,color,let},
}
\lstloadlanguages{[LaTeX]TeX}

However that marks every word color as a keyword, no matter if it is preceded by a \.

I however really want only LaTeX keywords to be highlighted.

Can this somehow be achieved?

Answer 1

You want moretexcs, I think

\lstdefinestyle{demostyle}{
    columns    = flexible,
    keepspaces = true,    
    basicstyle = \small\ttfamily,
    language   = [LaTeX]TeX,
    moretexcs  = {textwidth,color,let},
}