I checked those out before posting. They appear to work on mailbox databases; these appear to be individual pieces from those.

I mentioned this to a co-worker and he said "maybe what you need is just embedded as text" which was exactly right. Sometimes the obvious escapes me ... in this case I know all lines I want can't have spaces or control characters or non-ASCII values so this simple script is all I need:

while (<>)
{
    print $_ if  ($_ =~ /^[^\00-\x20\x7f-\xff]+\r?$/);
}
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