TextMate command to convert slim to html

gistfile1.txt

#!/usr/bin/env ruby

# Input: Selected Text or Nothing
# Output: Replace Selected Text

require 'tempfile'

def unindent(text)
  lines = text.split(/\n/)
  level = lines.map{|l| l[/^\s*/].size}.min
  [lines.map{|l| l[level..-1]}.join("\n"), level]
end

text, level = unindent(STDIN.read)

Tempfile.open('haml2html') do |t|
  t << text
  t.flush
  output = `#{File.join(ENV['TM_GEM_BIN'], 'slimrb')} -p #{t.path}`
  puts output.split("\n").map{|l| ' ' * level + l}.join("\n")
end