snippet.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>commands</key>
	<array>
		<dict>
			<key>argument</key>
			<dict>
				<key>beforeRunningCommand</key>
				<string>nop</string>
				<key>command</key>
				<string>#!/usr/bin/env python

# Add comments to the end of lines

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)
</string>
				<key>fallbackInput</key>
				<string>line</string>
				<key>input</key>
				<string>selection</string>
				<key>name</key>
				<string>end-of-line comments</string>
				<key>output</key>
				<string>replaceSelectedText</string>
				<key>uuid</key>
				<string>9596E382-6D7E-4980-9D97-6E5680B33BB8</string>
			</dict>
			<key>command</key>
			<string>executeCommandWithOptions:</string>
		</dict>
		<dict>
			<key>command</key>
			<string>moveUp:</string>
		</dict>
		<dict>
			<key>command</key>
			<string>moveToEndOfLine:</string>
		</dict>
		<dict>
			<key>argument</key>
			<string> </string>
			<key>command</key>
			<string>insertText:</string>
		</dict>
	</array>
	<key>name</key>
	<string>EOL comments + reposition cursor.</string>
	<key>uuid</key>
	<string>8D5844FA-2BC2-4E53-BEE0-FF42E0848A74</string>
</dict>
</plist>