qpdf/qtest/qpdf/diff-ignore-ID-version


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#!/bin/sh
lines=$(expr 0 + $(diff "$1" "$2" | grep -E '^[<>]' | \
        grep -E -v '/ID' | grep -E -v '%PDF-' | wc -l))
if [ "$lines" = "0" ]; then
   echo okay
else
   diff -a -U 0 "$1" "$2"
fi