robots.txt and regular expressions?

I'm not sure what is the right group for asking questions about 
robots.txt file, so I'm asking it here.

I would like to exclude robots from accessing such links:

/index.php?title=One_page&action=edit
/index.php?title=Other_page&action=edit

What should be a robots.txt line to exclude such pages (for bots which 
understand regexps, like Googlebot, Yahoo Slurp etc.)?

1) Disallow: /index.php*action=edit

2) Disallow: /index\.php.*action=edit


According to http://www.google.com/help/faq_codesearch.html#regexp
(and 
http://en.wikipedia.org/wiki/Regular_expression#Syntax),
it should be 
the 2) one.

However, almost every "robots.txt regexp" search result seem to point to 
the 1) one.

What is the correct answer?



-- 
Tomasz Chmielewski
http://wpkg.org