Function is_probably_utf8_text

build.rs:345–351

True when `path` is a readable UTF-8 text file. Used to fail the skill bundle codegen early with a clear message when a binary support file would otherwise break `include_str!` with an opaque compile error.

(path: &Path)

/// bundle codegen early with a clear message when a binary support file would
/// otherwise break `include_str!` with an opaque compile error.
fn is_probably_utf8_text(path: &Path) -> bool {
    match fs::read(path) {
        Ok(bytes) => std::str::from_utf8(&bytes).is_ok(),
        // Unreadable files fall through to include_str!'s own error.
        Err(_) => true,
    }
}

/// Generates `$OUT_DIR/plugin_bundle_generated.rs`: a recursive manifest of
/// every file under `plugin/skills/` (SKILL.md *and* any `references/`,