derive_more::Display seems to handle special case for enum incorrectly

[stepancheg]

This works correctly:

#[derive(derive_more::Display)]
#[display("x{}", self.command())]
enum Foo {
    Y,
}

impl Foo {
    fn command(&self) -> &'static str {
        "AAAAAA"
    }
}

#[test]
fn test() {
    assert_eq!("xAAAAAA", Foo::Y.to_string());
}

Now get rid of x prefix:

#[derive(derive_more::Display)]
#[display("{}", self.command())]
enum Foo {
    Y,
}

impl Foo {
    fn command(&self) -> &'static str {
        "AAAAAA"
    }
}

#[test]
fn test() {
    assert_eq!("AAAAAA", Foo::Y.to_string());
}

Now test fails:

assertion `left == right` failed
  left: "AAAAAA"
 right: "Y"

Version 1.0.0.

[tyranron]

@stepancheg this should already be fixed by #395 (at least the similar case is covered in tests, and I've also re-check your example on latest master), and will be released in 2.0.0 (hopefully, soon, since it's only #440 left to cut it).