git-fix-ws.rb

#!/usr/bin/env ruby

def fix_trailing_space(file)
  content = File.read(file)
  content.gsub!(/[\t ]+$/, '')
  File.open(file, "w") { |file| file.write(content) }
end

status = `git status`.split("\n")
files = status.map do |e|
  e[/(modified|new file):\s*(.+?)$/, 2]
end.compact

abort "no modified files" if files.empty?

files.each do |file|
  next unless File.file?(file)
  p :fixing => file
  fix_trailing_space file.strip
end