#! /usr/bin/sed -f
#
# split_digest
#
# Splits one digest mail into separate mails by duplicating the
# From_ header for each message in the digest. Digest sender's
# Reply-To: is also duplicated for each message.
#
# Script assumes that messages are separated with a line consisting
# of hyphens + blank line, following one of the headers From:, Date:,
# Subject: or To:. From_ must be found from the first line, and
# Reply-To: is seeked from lines 2-20.
#  
# This should work at least for digests generated by Majordomo and
# listserv, and FAQs using "minimal digest format".
#
# Written by Aaro Koskinen (aaro@iki.fi), January 1997.
#

# Check for From & Reply-To: headers & memorize them
2,$ba
/^From /h
bb
:a
21,$bb
/^Reply-To: /H
:b

# Check for separator
/^-*-$/!b
n
/^$/!b
n
/^Date: /bc
/^From: /bc
/^Subject: /bc
/^To: /bc
b

# Split
:c
x
p
x