is there anyway to use

when

with ignorecase when it comes to comparing strings

How about converting to either uppercase or lowercase in

when

?

when (text.toUpperCase()) {
   "FOO" -> doFoo()
   "BAR" -> doBar()
}

That produces an intermediary string though.

yeah, but I think we need to do that for both strings

If your scenario is performance-critical, you may prefer @diesieben07's answer as it does not allocate strings. In any other case, choose whichever you find the most readable.

Depends on the number of cases. It's pretty much switch (+allocation) vs if else.