coding style: use a space after comma
I left a cases like 'lambda x,y:' alone -- the lack of a space does
not bother me as much when the variables are single letters.
Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
See http://mercurial.selenic.com/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.