r565 was misinterpreted as a bug while it's a feature. Since it might be
inappropriate to do irreversible operations in an example, warn the user about
it.
After trying to tweak gindent so that it does not mess-up my ASCII art, give
and read the help of Vim to setup 'cinoptions' according to my needs
(cino=t0(0). This changeset reindent some bits that where not indented as they
should. A future commit will reindent the switch/case according to my (bad)
taste now that I have setup cindent correctly on my system (cino=t0(0:0).