On: Safe ways to do things in bash

[zeroimpl]

You just add quotes around $dir. Bash understands the quotes properly/recursively.

    parent_dir = "$(basename "$dir")"

[codedokode → zeroimpl]

So I finally found the answer. Thanks.

[8xde0wcNwpslOw → codedokode]

Bear in mind (pointed by the article as well) that variable assignment doesn't allow spaces around the equals sign, and that in this case the outer parentheses are unnecessary anyway.