Describe the bug you encountered:

Though the folder has few files without extension, but the following command returns nothing.

$ fd -t f -e ''

Describe what you expected to happen:

I expected to have a output ~similar to the output of find . -type f ! -name "*.*"

What version of fd are you using?
fd 8.1.1

Which operating system / distribution are you on?

This Pull Request is for HacktoberFest 2020

Description of Change

Checklist

• Added description

doctest help

Description of Change

References

Checklist

When working on a fix for #2755 I noticed that tags are being handled that cannot be used anyway, e.g. tags of disconnected changesets. Similarly, per-branch tags should be constrained to the checked out branch.