We are already violating POSIX with our globbing:

"If the pattern does not match any existing filenames or pathnames, the
pattern string shall be left unchanged."

Therefore, this:

zsh:1: no matches found: /tmp/inaccessible/a/*

is wrong, it should just print this:

/tmp/inaccessible/a/*

Also, at least with the implementation on my device, the glob() function
works fine as long as the folder has execute permission. (The sample was
wrong, it should be 111, not 000)

On Tue, Jan 12, 2021, 6:47 PM Lawrence Velázquez <vq@larryv.me> wrote:

> > On Jan 12, 2021, at 5:42 PM, Devin Hussey <husseydevin@gmail.com> wrote:
> >
> > Even if we can't access a parent folder, there is still a chance we can
> > access a subdirectory.
>
> I might be mistaken (entirely possible!), but this behavior seems
> to violate POSIX volume 3 chapter 2 section 2.13.3, which states
> in part that
>
>         Specified patterns shall be matched against existing filenames
>         and pathnames, as appropriate. Each component that contains a
>         pattern character shall require read permission in the directory
>         containing that component. Any component, except the last, that
>         does not contain a pattern character shall require search
> permission.
>
> (
> https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_13_03
> )
>
> vq