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#!/bin/sh -e
input=$1
sail=../sail.native
output1=`mktemp --suffix=.sail`
echo Pretty-printing $input
$sail -verbose $input > $output1
output2=`mktemp --suffix=.sail`
echo Pretty-printing pretty-printed
$sail -verbose $output1 > $output2
diff -u $output1 $output2 && \
(rm -f $output1 $output2; echo Idempotence: ok)
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