I have the following simplified code:

# My "original" Null-coalescing operator
function or { $args[0] ? $args[0] : $args[1] }

function c1 { "code $($args ? $args : './')" }
function c2 { "code $($args ?? './')" }
function c3 { "code $(or $args './')" }

The output looks like this:

Case 1:

❯ c1
code './'

❯ c2
code 

❯ c3
code './'

Case 2:

❯ c1 .gitconfig
code .gitconfig

❯ c2 .gitconfig
code .gitconfig

❯ c3 .gitconfig
code .gitconfig

I just don’t understand why the ?? operator doesn’t work as I would expect it in the c2 Output of Case 1. It sadly ruins my potential use-cases for the operator for me.

Can someone explain why this is the case?