compare pointer and a string

[gosom]

Thanks for the great library.

I experience a "strange" behavior.

package main

import (
	"fmt"

	"github.com/expr-lang/expr"
)

type Env struct {
	A string
	B *string
}

func main() {
	code := `A == B`

	program, err := expr.Compile(code, expr.Env(Env{}))
	if err != nil {
		panic(err)
	}

	value := "ok"
	env := Env{
		A: value,
		B: &value,
	}

	output, err := expr.Run(program, env)
	if err != nil {
		panic(err)
	}

	fmt.Println(output)
}

Try in go playground .

I expect the output to be true but it is false.

Is this behavior intentional?
Reading another issue related to pointers I was with the impression that pointers
should be "hidden", since a lot of stakeholders are people who cannot code well.

changing the code to:

code := `A == (B ?? "")`

outputs true as expected.

Maybe this at least can be documented (if it's not already and I missed it) or
the comparison operator supports a comparison between strings and pointers to strings.

best

[antonmedv]

It is a bug. If I flip expression to B == A - everything works.