In this version of Octave, “warning on” really enables all warnings (while this
was not the case in Octave 6, suprisingly; I think this used to be different
with even older Octave releases).
We therefore need to explicitly disable the Octave:array-as-logical warnings,
that is triggered by some internal Octave functions.
We also need to be careful to call “warning_config” instead of “warning on”
when restoring warnings to their default state.
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]
Johannes Pfeifer
Sébastien Villemot