Fix bzgrep so it doesn't always return a 0 exit code

Bzgrep used to always returns 0 as an exit code when grepping multiple
archives; this fixes it.

Patch from Kristýna Streitová <kstreitova@suse.com>
parent 010e90dd
......@@ -65,8 +65,20 @@ for i do
else
j=$(echo "$i" | sed 's/\\/&&/g;s/|/\\&/g;s/&/\\&/g')
j=`printf "%s" "$j" | tr '\n' ' '`
bzip2 -cdfq "$i" | $grep $opt "$pat" | sed "s|^|${j}:|"
r=$?
# A trick adapted from
# https://groups.google.com/forum/#!original/comp.unix.shell/x1345iu10eg/Nn1n-1r1uU0J
# that has the same effect as the following bash code:
# bzip2 -cdfq "$i" | $grep $opt "$pat" | sed "s|^|${j}:|"
# r=${PIPESTATUS[1]}
exec 3>&1
eval `
exec 4>&1 >&3 3>&-
{
bzip2 -cdfq "$i" 4>&-
} | {
$grep $opt "$pat" 4>&-; echo "r=$?;" >&4
} | sed "s|^|${j}:|"
`
fi
test "$r" -ne 0 && res="$r"
done
......
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