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#!/usr/local/bin/perl -w
# $Header$
#
# Usage:
# select.patch patch.name <file.adat >file.patch.adat
#
# This filter prints that part of standard input starting with a
# line of the form (eg)
# ## +z patch
# and continuing up to and including two consecutive newlines.
#
use strict;
if (scalar(@ARGV) != 1)
{ die "usage: select.patch patch.name <data >data-for-that-patch\n"; }
my $patch_name = $ARGV[0];
my $in_selected_patch = 0;
my $newline_count = 0;
while (my $line = <STDIN>)
{
if ($line =~ /^### \Q${patch_name}/o)
{ $in_selected_patch = 1; }
if ($line =~ /^\n/)
{ ++$newline_count; }
else { $newline_count = 0; }
if ($in_selected_patch)
{
print $line;
if ($newline_count == 2)
{ last; }
}
}
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