Using the lips package

Question

How do I use the lips package?

Having the following line in my preamble:

\usepackage{lips}

produces the following error:

/usr/local/texlive/2010/texmf-dist/tex/latex/frankenstein/lips.sty:309: Undefined control sequence.
l.309 \newlet\lips
                  \Lips

Why so?

Answer 1

I think you are supposed to use it with the other “frankenstein package” moredefs included first. moredefs defines

\newcommand*\newlet [2] {% args: \csname-a \csname-b
  \@ifdefinable #1 {%
    \let #1#2%
  }%
}

\@ifdefinable is defined in the LaTeX source (texdoc source2e) and is the same check that is used in \newcommand to check that nothing is overwritten.

Answer 2

It looks like a bug in the package. It also looks like docstrip was not run on the package and a lips.dtx file was just renamed to lips.sty.

It seems to work for me if I use.

\let\newlet\let
\usepackage{lips}