#pragma page-filename DOC/versions/4030686
== 3.12. How can I remove duplicate Re: markers from the Subject: field of messages? ==

I've managed to do this with a simple sed script.

(1) Find a suitable place for your script, and then make a file like 'mylist.sed' containing:

{{{
    ----- start of mylist.sed -----
    s/^Subject:\(.*\)\[SUBJECT_PREFIX\] /Subject:\1/
    s/^Subject: *\(Re: \)\+/Subject: Re: /
    ------ end of mylist.sed ------
}}}

(Change the SUBJECT_PREFIX to the subject prefix for your list)

(2) Make a file like 'mylist.sh' containing:

{{{
    ----- start of mylist.sh -----
    cat | sed -f /PATH/TO/mylist.sed | /PATH/TO/mailman/mail/wrapper post listname
    ------ end of mylist.sh ------
}}}

(Again, change the /PATH/TO's to a suitable value for your system)<<BR>> (Note that qmail users need to insert the 'preline' command between the pipe and the 'wrapper' command)

(3) Change the 'mylist.sh' script to mode 755 (executable)

(4) Change /etc/aliases or ~alias/.qmail-listname to be:

{{{
    | /PATH/TO/mylist.sh
}}}

(Change this as you require)

(5) Test by posting to the list with a subject line containing Re:'s and a [subject_prefixes] and more Re:'s

Converted from the Mailman FAQ Wizard

This is one of many [[../Frequently Asked Questions|Frequently Asked Questions]].