Cannot use concatcp to match str

[Armiixteryx]

Hello, currently I am having an issue when trying to match strings using concatcp:

Let suppose we have following code:

use const_format::concatcp;
fn main() {
    const ABC: &str = "abc/";
    let s = "abc/xyz";
    match s {
        concatcp!(ABC, "xyz") => todo!(),
        _ => todo!()
    }
}

In compilation, I get following error:

Using std's concat macro works, but with concatcp I can use a constant to avoid repetitions, in this case, of abc/.

Thank you for this crate!

[rodrimati1992]

There's no way on stable to make that work yet, so you'll have to do this for now:

use const_format::concatcp;
fn main() {
    const ABC: &str = "abc/";
    let s = "abc/xyz";
    const C: &str = concatcp!(ABC, "xyz");
    match s {
        C => todo!(),
        _ => todo!()
    }
}

when inline const is stabilized, then I'll update this crate to use it and make your code work.

I'll leave this issue open until that happens.

[rodrimati1992]

Update: the latest release (0.2.34) makes the macros usable in patterns when the "rust_1_83" crate feature is enabled, and you enable the inline_const_pat unstable language feature in your crate.

I'll close this issue once the language feature is usable on stable.