From mboxrd@z Thu Jan  1 00:00:00 1970
MIME-Version: 1.0
From: dexen deVries <dexen.devries@gmail.com>
Date: Fri, 26 May 2017 16:20:50 +0200
Message-ID: <CAJUT6o4aBzB8ad51c3wAmitOHoo70nkzoJQX=voLjN1ixyLzCw@mail.gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: [9fans] Acme Edit to remove lines
Topicbox-Message-UUID: be7d07a8-ead9-11e9-9d60-3106f5b1d025

given multi-line dot, spanning only part of a file, how do i construct
an Edit command to remove lines matching certain regular expression?

wanted to delete lines starting with one particular character; without
leaving an empty line behind, thus Edit s/X.+//d is not sufficient.