-f not a valid substitute for --files

[arnavs]

If I run something like this:

jupinx -w --files source/rst/more_julia/data_statistical_packages.rst

it works, but if I do:

jupinx -w -f source/rst/more_julia/data_statistical_packages.rst

or:

jupinx -wf source/rst/more_julia/data_statistical_packages.rst

then it tells me that -f is not recognized.

This is also in line with jupinx -h, which doesn't have a -f flag under additional options (just --files).

[arnavs]

(But the help output also has syntax like jupinx -n lecture-source-py -f source/lecture1.rst, which I couldn't get to work, for the same reason.)