Is \xymatrix@1 parsed correctly?

[pbelmans]

Currently in Kerodon there is an \xymatrix@1 (see the definition of the \Adjoint macro), which becomes \xymatrix@ 1 after plasTeX did its thing. I thought the class xymatrix1 in xy.py was supposed to deal with this, but apparently it doesn't.

For now I'll just replace xymatrix@ 1 with xymatrix@1 in the processing step, but at some point we should take a better look at this.