Downloading this code
There are two options for downloading. The first is to log in as the anonymous user and follow the /leaves link. Then find the top-most entry and click that. From there, you can download a zip file containing the latest checked-in source code.
Optionally, you can use fossil:
~> fossil clone \ http://fossil.wanderinghorse.net/repos/whdbg/index.cgi \ whdbg.fsl
(All on one line.)
That will copy the repository to whdbg.fsl, which you can then open with:
~> mkdir whdbg ~> cd whdbg ~> fossil open ../whdbg.fsl
That checks out the files under the current dir. A Makefile for GNU Make is included.