#!/bin/sh
# Remove trailing whitespace. By default it runs
# in the current directry, on all files, but you
# can change this by passing parameters as you
# would to find.
#
# License: LGPLv2
#
# Note this doesn't change file (timestamps)
# which don't need to be updated.

#Note super sed has a -i option to do this (edit files in place)
#also perl can edit files in place easily.

# Temporary file
setglobal temp = "/tmp/runsed$Pid"

find @ARGV -type f -print |
while read file
{
    echo -n "editing $file: "
    if test -s $file {
       sed -e 's/[ 	]*$//g' <$file > $temp
       if test -s $temp {
           if cmp -s $file $temp {
             echo -n "file not changed: "
           } else {
             cp $temp $file
           }
           echo "done"
       } else {
           echo "produced an empty file - aborting"
       }
    } else {
       echo "original file is empty."
    }
}
echo "all done"
rm -f $temp