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.
#!/bin/sh
#
mkdir t
cd t
hg init
echo 0 > a
echo 0 > b
hg ci -A -m m -d "0 0"
hg rm a
hg cat a
sleep 1 # make sure mtime is changed
echo 1 > b
hg ci -m m -d "0 0"
echo 2 > b
hg cat -r 0 a
hg cat -r 0 b
hg cat -r 1 a
hg cat -r 1 b