Hi,

yet again I find myself confronted by the problem of filtering a
Packages file by a a list from a file. With grep one can use

   grep -f FILE

to avoid building a HUGE command line for such cases. That also avoids
the problem of the command line overflowing. Grep-dctrl should have a
similar option with the extension to specify what field to match the
patterns in the file against, e.g.

  grep-dctrl -f Maintainer MAINTAINER-FILE

MfG
	Goswin