This test checks that unimported completion is case-insensitive.

-- go.mod --
module mod.test

go 1.18

-- main.go --
package main

func main() {
	fmt.p //@complete(re"p()","Print", "Printf", "Println"), diag("fmt", re"(undefined|undeclared)")
}

-- other.go --
package main

// Including another package that imports "fmt" causes completion to use the
// existing metadata, which is the codepath leading to golang/go#60545.
import "fmt"

func _() {
	fmt.Println()
}
