mount_point doesn't work as expected with special characters

[andyneff]

In linux, it's totally possible to have a mount point with tabs and newlines in it, although highly unlikely.

While the df and mount command do work with these as inputs, the output has them replaced with ? instead, making the commands mount_point and mount_type not work as expected.

The only solution, as I see it, is to parse /proc/mounts and use that output instead, which is in octal (at least on fedora 33)