latex - How to redifine (via ENVIRON package) the "pmatrix" environment? -

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i want redefine "pmatrix" environment provided amsmath package (and changed mathtools package) adding good-looking delims. code below:

\documentclass{article} \usepackage{amsmath,amstools,environ} \renewenviron{pmatrix}{\parens{\begin{matrix}\body\end{matrix}}}

"parens" command provided mtpro2 package curved left/right parensis. not work. further, there's star-ed version pmathix* envrionment (with optional arg l/c/r), don't have idea either. code can give below:

\documentclass{article} \usepackage{amsmath,amstools,environ} \renewenviron{pmatrix*}[1][c]{\parens{\begin{matrix*}[c]\body\end{matrix*}}}

i mail environ package's author robertson (wspr81[at]gmail[dot]com) no reply. maybe been seen here usually. logged in , posted.


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