Feature request: odd length accepted

[thenger]

Why the restriction on length ?

# gitc0ffee --update-ref --prefix=eeeee
invalid prefix "eeeee": odd length hex encoded bytes: len(eeeee) = 5

[trichner]

Good question! This is because one byte is encoded as two characters in hexadecimal. To support odd lengths one would need to be able to handle prefixes on half-bytes (nibbles).

To avoid the complexity this is not supported for now. Feel free to open a PR though, it would make sense because most git clients show 7 characters (3.5 bytes prefix).