From latest SVN release (66624).
(I think I may have reported this before?)
430- at c DESCRIPTION field Maintainer
431-The mandatory @samp{Maintainer} field should give a @emph{single} name
432:followed a @emph{valid} (RFC 2822) email address in angle brackets. It
433-should not end in a period or comma. This field is what is reported by
"followed a" should be "followed by a", I think ...
Ben Bolker