[Tex/LaTex] TeXStudio doesn’t recognize self-defined commands in external file

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I'd like to define some tables as commands (MWE) in an external .tex file,
because there are a lot of settings for them. This external file gets included in the main document by the \input{} command. Using my pre-defined commands is no problem. TeXStudio is able to compile the main document and also gives an output. The problem is, that TeXStudio doesn't recognize the \hline command and the & separator for tables inside my self-defined table (the editor says there are table commands outside of table environment). Also, if only the main document is opened in the editor (without the myTemplate file),
the \mytable{} and \lb commands I defined in the external document are not recognized.

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Is there a way to make this red highlighting disappear
without simply deactivating the syntax-highlighting? I got some help from here: TeXStudio doesn't recognize some commands, because I've had the same Problem with other commands before. Though, These commands were from packages I got from ctan, so no self-defined commands.

I'm not sure if this problem is reproducable for you, but here is a MWE:

\documentclass[]{scrartcl}
\input{myTemplate.tex}

\begin{document} 

\mytable{
%% \hline A & B & C & D & E \\ \hline
a & b1 \lb b2 \lb b3 & c1 \lb c2 \lb c3 & d & e \\ \hline
& & & & \\ \hline
& & & & \\ \hline   
}

\end{document}

And the myTemplate file:

\usepackage{tabularx}
\usepackage{here}
\usepackage{array}
\usepackage[table]{xcolor}
\newcolumntype{M}[1]{>{\centering\arraybackslash}m{#1}} 

\newcommand{\mytable}[1]{%
\begin{center}
    \rowcolors{1}{white}{pink}
    \begin{tabular}{| M{.2\textwidth} | M{.15\textwidth} | M{.1\textwidth} | M{.2\textwidth} | M{.2\textwidth} | M{.15\textwidth}|} \hline
    A & B & C & D & E \\ \hline
    #1
    \end{tabular}
\end{center}%
}

\newcommand{\lb}{\linebreak}

Best Answer

It's not possible to selectively switch of parts of the syntax checking. It's also not possible to make the parser accept table-like behavior in arguments.

However, you could define your own table environment:

\newenvironment{mytable}{%
    \begin{center}
        \rowcolors{1}{white}{pink}
        \begin{tabular}{| M{.2\textwidth} | M{.15\textwidth} | M{.1\textwidth} | M{.2\textwidth} | M{.2\textwidth} | M{.15\textwidth}|}     \hline
            A & B & C & D & E \\ \hline
}{\end{tabular}\end{center}}

in a custom .cwl declare that environment to be tabular-like:

\begin{mytable}#\tabular
\end{mytable}

and use it in your document:

\begin{mytable}
%% \hline A & B & C & D & E \\ \hline
a & b1 \lb b2 \lb b3 & c1 \lb c2 \lb c3 & d & e \\ \hline
& & & & \\ \hline
& & & & \\ \hline   
\end{mytable}
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