What does `git push origin --delete ""` do?

Hi!

Because of an empty line in the input file, my script

cat remove.txt | sed 's/origin\///' | xargs -d '\n' git push origin --delete

executed (among other deletions) an implicit `git push origin --delete
""`. I wonder, what that one is supposed to do. I think, it should
produce an error just as `git push origin --delete` without a further
argument does but it doesn't. It seemed like instead, it tried to push
all my local branches to origin!? Is this something that should get
fixed?

Best regards,

Tilman