It is now supported by the MATLAB editor (as of R2022a).
The old ASCII notation is left in some files that we copy as-is from other
sources (e.g. in the contrib/ and m4/ subdirectories).
The particles submodule is not updated at this point, because it is in an
inconsistent state.
[skip ci]
The routines use the find() function applied to a subset of columns of the
Jacobian, which in this case is a row vector. When passed a row vector, find()
returns row vectors (while it returns column vectors when passed a column
vector or a matrix). This case was not correctly handled.