\definemathmatrix[pmatrix][matrix:parentheses][simplecommand=pMat]

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I used to typeset an augmented matrix this way:

\m{\pMat{1,7,-6,\vrule,-4;3,-4,7,\vrule,13;4,3,1,\vrule,9}}

But this no longer works.

Though I can get over this with

\m{\pMat{1,7,-6,¦,-4;3,-4,7,¦,13;4,3,1,¦,9}} ,

I find the result from the old way looks nicer.

Is the using of \backslash vrule within mathmatrix gone for good?

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