sometimes I do something like this:

  foo \
    --group1 \
    \
    --group 2 \
    --more-stuff 2 \
    | \
   bar \
    --bar-stuff

using a line with a single backlash or breaking out the pipe can make grouping stuff clear. well, I mean as clear as having to use backslashes which to me is a little inelegant. Personally python and its indenting strategy has grown on me especially since editor support makes it painless to use and visually excellent.