Tab indents everywhere

#!/usr/bin/env python -S
#encoding: utf-8

# For TM2:TextTasks
# Settings:
#  Input::Line::Text
#  output::Replace input::Snippet

import os
import sys
import re

# FIXME:
INDENT = '  '

tm_support_path = os.environ['TM_BUNDLE_SUPPORT']
if tm_support_path not in sys.path:
     sys.path.insert(0, tm_support_path)

import exit_codes as exit

if os.environ.get('TM_SELECTED_TEXT', None):
    # If there is a selection I can't get access to the line?! Bail.
    exit.discard()

line = os.environ.get('TM_CURRENT_LINE')
line = line.rstrip('\r\n ')
col = int(os.environ.get('TM_LINE_INDEX'))

line = INDENT + line[0:col] + '${0}' + line[col:]
sys.stdout.write(line)