make --style=compact look for map-cmdline.compact.
change name of key in map file from changelog to changeset.
rename command map files to start with map-cmdline.
rename ui.logmap to ui.style in hgrc.
now --style=foo does this:
tries to open foo as file.
tries as map-cmdline.foo in template path.
tries as foo in template path.
#header#
# HG changeset patch
# User #author#
# Date #date|date#
# Node ID #node#
#parent%changesetparent#
#desc#
#diff#