Textmate or E-Texteditor command. My settings: Save: Current File, Input: Entire Document, Environment: Cygwin (generic), Output: Replace Document, Activation: Key Equivalent: F2, Scope Selector: ''

Clean Whitespace.tmCommand

#!/usr/bin/env python

import sys
import re

re_whitespace = re.compile(r"[ \t]+$")

# Remove unnecessary whitespace.
lines = [re.sub(re_whitespace, '', line) for line in sys.stdin.readlines()]

# Ensure that the last line is an empty line.
if lines[-1] is not '':
  lines.append('')

sys.stdout.writelines(lines)