There is a minor error in the documentation located at [1]:

##########################################
For example,

    *

      setting the priority of an issue:

      Subject: Re: [issue1] the coffee machine is broken! [priority=urgent]

    *

      adding yourself to a nosy list:

      Subject: Re: [issue2] we're out of widgets [nosy=+richard]

    *

      setting the nosy list to just you and cliff:

      Subject: Re: [issue2] we're out of widgets [nosy=richard,cliff]

    *

      removing yourself from a nosy list and setting the priority:

      Subject: Re: [issue2] we're out of widgets
[nosy=-richard;priority=bug]

In all cases, the message relates to issue 2. The Re: prefix is stripped
off.
##########################################

The phrase "In all cases, the message relates to issue 2." is wrong.
The first example is related to issue 1 ("Subject: Re: [issue1] the coffee
machine is broken! [priority=urgent]").


[1] http://roundup.sourceforge.net/docs/user_guide.html#e-mail-gateway