sed does not flush output.

[Carlo Wood]

sed stands for STREAMING editor no?
Then why doesn't it flush at least once per line?

I would like to use sed to filter log files that
I am monitoring live.  That fails because sed doesn't flush.


For example:

  echo "testtest" > log
  tail -f log | sed -e 's/test/X/'

gives no output to the terminal.

Can you please add a commandline option to 
make sed flush after every new-line?

-- 
Carlo Wood <address@hidden>