Function discover_path_is_absolute

src/discover/discover.c:998–1010

/* ── Public API ───────────────────────────────── */

static bool discover_path_is_absolute(const char *path) {
    if (!path || !path[0]) {
        return false;
    }
    if (path[0] == '/' || path[0] == '\\') {
        return true;
    }
#ifdef _WIN32
    return isalpha((unsigned char)path[0]) && path[1] == ':';
#else
    return false;
#endif
}

/* Resolve the shared "common" git directory for repo_path.
 * Handles three layouts: