[Mailman-Users] Regexp for blocking addresses
mark at msapiro.net
Fri Sep 25 17:23:45 CEST 2015
On 9/25/15 7:57 AM, Matthew Saltzman wrote:
> That's still much more aggressive than what I was trying to say. I
> actually want to ban precisely all variants of the one address
> joeblow at gmail.com
> (and about a dozen other addresses) that include embedded periods
> anywhere and the suffix, but not other gmail addresses. grep finds
> them with
> \.\?j\.\?o\.\?e\.\?b\.\?l\.\?o\.\?w\.\ ?+.*@gmail \.com
> (I might want \.* instead of \.\?) but adding
> ^\.\?j\.\?o\.\?e\.\?b\.\?l\.\?o\.\?w\.\ ?+.*@gmail\.com
> to the ban list doesn't seem to block them.
Because in a python RE, \? is a literal '?', not a '0 or 1 of repeat'.
For grep you need the \? to give ? its special meaning. a regexp for
egrep or grep -E will be closer to what you want for python. You want
^\.?j\.?o\.?e\.?b\.?l\.?o\.?w xxx \+.*@gmail\.com
where I'm unsure about the ' xxx ' part because I don't understand what
'\ ?' is supposed to do?
Or instead of the above and to account for multiple '.' maybe
which says zero or more dots followed by j followed by zero or more dots
followed by o, etc., followed by w followed by zero or more dots
followed by + followed by anything followed by @gmail.com.
Mark Sapiro <mark at msapiro.net> The highway is for gamblers,
San Francisco Bay Area, California better use your sense - B. Dylan
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