Please see
http://github.com/techarcana/elisp/commit/63d672c296316c85690085930b05c642b88a9978#diff-2
Note how the @@ ... @@ clauses are followed by text from the previous
line's comment. Not sure, but this strikes me as a line-ending issue.
custom.el was originally built on a linux machine; now I'm using a Mac.
Thanks!
--
Dave Abrahams
BoostPro Computing
http://www.boostpro.com