rlls 0.0.30

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use std::path::PathBuf;

pub fn detect_shell() -> PathBuf {
    if let Ok(p) = std::env::var("rlls_SHELL") {
        let pb = PathBuf::from(p);
        if pb.exists() {
            return pb;
        }
    }
    if let Ok(p) = std::env::var("SHELL") {
        let pb = PathBuf::from(p);
        if pb.exists() {
            return pb;
        }
    }
    for c in [
        "/bin/sh",
        "/usr/bin/sh",
        "/bin/bash",
        "/usr/bin/bash",
        "/bin/zsh",
        "/usr/bin/zsh",
    ] {
        let pb = PathBuf::from(c);
        if pb.exists() {
            return pb;
        }
    }
    PathBuf::from("/bin/sh")
}