This simple program folds several lines into one so that you can show 
multiple multiline outputs on one dzen line.

Example:
while true; do
    /home/timothy/bin/foldlines $(date +"%H:%M %a %d %b %y") $(acpi -t)
    sleep 60
done | dzen2 -p -ta r -fg '#a8a3f7' -bg '#3f3c6d' \
-fn '-xos4-terminus-medium-r-normal--16-160-72-72-c-80-iso8859-1'

shows:

19:58 Sun 03 Jun 07 Battery 1: charged, 100%, rate information unavailable. Thermal 1: ok, 54.0 degrees C

All on the same dzen line.

INSTALLATION
ghc --make foldlines.lhs -o foldlines
cp foldlines ~/bin

>import IO
>import System
>
>main :: IO ()
>main = do args <- getArgs
>          hSetBuffering stdout NoBuffering
>          putStr (unwords (words (unwords args)))
>          putStr "\n"