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# unread-mh.rc
#
# procmail recipe to compute how many unread messages
# for MH as the MUA (mail user agent).
#
# $Id: unread-mh.rc,v 1.3 1995/08/04 19:25:07 aks Exp $
#
# Copyright (C) 1995 Alan K. Stebbens <aks@hub.ucsb.edu>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#
# Usage:
#
# Referenced by "ackmail.rc" when MUA=mh and the text of the
# reply includes the string '$UNREAD'
#
# If MH_INFOLDERS is set, uses the output of "folder +$folder"
# for each folder mentioned in MH_INFOLDERS. The sum of the
# current message number subtracted from the last message
# number for each folder is returned.
#
# If MH_INFOLDERS is not set, then check for the Unseen-Sequence
# profile entry. If this is set, uses the number of messages
# in this sequence.
#
# If there is no Unseen-Sequence profile entry, or there is no
# sequence in the +inbox, then use the output of 'folders +inbox'
# as for MH_INFOLDERS above.
#
# Note: PATH should include the MH bin directory
UNREAD=no # default output
SHELL=/bin/sh # be sure
# If the user has defined one or more explicit folders in the
# variable MH_INFOLDERS, then use a shell script to get UNREAD
:0
* MH_INFOLDERS ?? .+
{
UNREAD=`(for f in $MH_INFOLDERS ; do folder +$f ; done) |
sed -n -e 's/^.*- *\([0-9]*\)); cur= *\([0-9]*\);.*/ok \1 \2/p' |
awk '/ok/ { s+=$2-$3 } END { print s }'`
}
# If no explicit folder list, try using unseen sequences
:0 E
{
# Get some MH info
MH_INBOX=`mhpath +inbox`
MH_UNSEENSEQ=`mhparam Unseen-Sequence`
MH_INSEQFILE=$MH_INBOX/.mh_sequences
:0 chW
* MH_UNSEENSEQ ?? [a-z]+
* ? test -f $MH_INSEQFILE
* ? grep "^$MH_UNSEENSEQ:" $MH_INSEQFILE
|UNREAD=`pick +inbox $MH_UNSEENSEQ 2>/dev/null | wc -l`
# Ok -- no unseen sequence. Try last resort of using +inbox info.
:0 E
{
INFOLDER=`folder +inbox`
:0
* INFOLDER ?? cur= *\/[0-9]+
{ CUR=$MATCH
:0
* INFOLDER ?? messages *\( *[0-9]+- *\/[0-9]+
{ MAX=$MATCH
:0
* ? test "$MAX" -gt "$CUR"
{ UNREAD=`expr $MAX - $CUR` }
}
}
}
}
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