textmate_end_of_line_comments.py

#!/usr/bin/env python

# Add comments to the end of lines
# Set `save` to `nothing`
# Set `input` to `selected text` or `line`
# Set `output` to `replace selected text`

import sys, os

comment_char = os.environ.get('TM_COMMENT_START', '#')
default_column = 55 # could set TM_DEFAULT_COMMENT_COL or similar

lines   = sys.stdin.readlines()
lens    = [len(s) for s in lines]
max_len = max([max(lens), default_column])

for line in lines:
    print "%-*s %s" % (max_len, line.rstrip('\n').rstrip(), comment_char)