[TxMt] LaTeX: || should be verbatim, but not in tabular{|c|c|c}

Hello,

I use the LaTeX grammar and I have defined my own shortverb command: | so that I can write |foo| and have everything enclosed in | and | treated the same as \verb|foo|. So I'd like to mark the contents between | and | as verbatim, but not in the tabular definition such as

\begin{tabular}{|c|c|c|c}

My attempt

{ begin = '|'; beginCaptures = { 0 = { name = 'punctuation.definition.verb.latex'; }; }; end = '|'; endCaptures = { 0 = { name = 'punctuation.definition.verb.latex'; }; }; name = 'markup.raw.verb.latex'; },

works for requirement #1, but not for #2 (the tabular case). What should I do that |c| in \tabular{...} is not defined as verbatim?

Thanks

Dirk