# Refuse helper names that would capture predeclared true or nil in existing functions.
! exec semedit refactor-extract-callable --file emit.go --symbol true --in-function Emit --kind function --start-line 4 --end-line 4
stderr 'collides with a predeclared Go identifier'
cmp emit.go original/emit.go
! exec semedit refactor-extract-callable --file emit.go --symbol nil --in-function Emit --kind function --start-line 4 --end-line 4
stderr 'collides with a predeclared Go identifier'
cmp emit.go original/emit.go

-- go.mod --
module example.com/extractfunctionpredeclared

go 1.23
-- emit.go --
package sample

func Emit() {
	println(1)
}

func Flag() any { return true }
func Empty() any { return nil }
-- original/emit.go --
package sample

func Emit() {
	println(1)
}

func Flag() any { return true }
func Empty() any { return nil }