\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{animals2}[2014/09/28 v1.0 (NLCT) Sample package to test tracklang.sty]

\RequirePackage{tracklang}

% default definitions
\newcommand\catname{cat}
\newcommand\dogname{dog}
\newcommand\ladybirdname{bishy-barney-bee}


\newcommand*{\RequireAnimalsLang}[1]{%
  \@ifundefined{ver@animals2-#1.ldf}{\input{animals2-#1.ldf}}{}%
}

\newcommand*{\ProvidesAnimalsLang}[1]{%
  \ProvidesFile{animals2-#1.ldf}%
}

\AnyTrackedLanguages
{%
  \ForEachTrackedDialect{\this@dialect}{%
    \IfTrackedLanguageFileExists{\this@dialect}%
    {animals2-}% prefix
    {.ldf}%
    {%
      \RequireAnimalsLang{\CurrentTrackedTag}%
    }%
    {%
       \PackageWarning{animals2}%
       {No support for language `\this@dialect'}%
    }%
  }%
}
{% no tracked languages, default already set up
}

\endinput