How can the GDB pretty printer file (printers.py) provided by Eigen be adapted to also print views of a matrix or vector? For example,

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gdb> print submat

where

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auto submat = mat.topLeftCorner(m, n);

I can achieve this manually by casting the submatrix to, say, MatrixXd:

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gdb> print (MatrixXd)submat

However, I would prefer achieving this automatically by adapting the file printers.py so that IDEs (e.g., Eclipse) can show the submatrix entries when hovering with the mouse.

I am only interested in dynamic matrices, MatrixXd, so I would not mind to use a hack, ad-hoc solution.

Any suggestions?