Describe the bug you encountered:
I'm reading tab-separated files with two columns at it seems that it is still using the comma as delimiter.

cat file | bat -l tsv gives:

What did you expect to happen instead?
Highlight each column in a different color.

How did you install bat?

cargo install --locked bat

Cargo version: 1.53.0
OS: Ubuntu 20.04
bat version: 0.19

bat version and environment