I usually have just one working copy. If I come across a problem, I
fix it and try to recompile. If it works, fine. But if I should submit
a "diff -Naur" patch I need the old an the new file. The old file is
gone, of course, so I need a checkout of a second (original) working
copy to be able to "diff -Naur". I believe that that is completely
unnecessary, because the SVN working copy as well as the tla working
copy have the original files stored either in .svn or in the {arch}
subdirectories.
I just don't know how I would use "diff" in a convenient way. Could
somebody suggest something and put it onto the Wiki?
http://wiki.axiom-developer.org/HowToSubmitPatches