[WIP] hide files/dirs

[ezrizhu]

example: ./try -E STYLE.md -n "ls"

TODO

• Impl
• tests
• resolve issue on /tmp
• resolve CI failure
• manpages & usage

[ezrizhu]

current issue: try -E fails when the dir is in /tmp

λ cat /tmp/tmp.hjwJDZxAyD.try-1730616101765
mount: /tmp/tmp.x51LCKay3K.try-1730616101765/temproot/efi: wrong fs type, bad option, bad superblock on overlay, missing codepage or helper program, or other error.
       dmesg(1) may have more information after failed mount system call.
mount: /tmp/tmp.x51LCKay3K.try-1730616101765/temproot/nix: wrong fs type, bad option, bad superblock on overlay, missing codepage or helper program, or other error.
       dmesg(1) may have more information after failed mount system call.
mount: /tmp/tmp.x51LCKay3K.try-1730616101765/temproot/run: wrong fs type, bad option, bad superblock on overlay, missing codepage or helper program, or other error.
       dmesg(1) may have more information after failed mount system call.
mount: /tmp/tmp.x51LCKay3K.try-1730616101765/temproot/run/user/1000/doc: permission denied.
       dmesg(1) may have more information after failed mount system call.
mount: /tmp/tmp.x51LCKay3K.try-1730616101765/temproot/sys: wrong fs type, bad option, bad superblock on overlay, missing codepage or helper program, or other error.
       dmesg(1) may have more information after failed mount system call.
mount: /tmp/tmp.x51LCKay3K.try-1730616101765/temproot/tmp: mount(2) system call failed: Too many levels of symbolic links.
       dmesg(1) may have more information after failed mount system call.

specifically: mount: /tmp/tmp.x51LCKay3K.try-1730616101765/temproot/tmp: mount(2) system call failed: Too many levels of symbolic links.

temp curr resolution: setting mktemp to use another dir