GNU cmp exits without reading all input when given the -s option,
and that can cause termination of the writing process via SIGPIPE.
Instead, when reading from a pipe, just redirect output to /dev/null
so that all input is read.
file=$1
str=$2
test -f $file || touch $file
- echo "$str" | sort -u - $file | cmp -s - $file \
+ echo "$str" | sort -u - $file | cmp - $file > /dev/null \
|| echo "$str" | sort -u - $file -o $file \
|| exit 1
}
if test $file = Makefile.am; then
copied=$copied${sep}$gnulib_mk; sep=$nl
remove_intl='/^[^#].*\/intl/s/^/#/;'"s!$bt_regex/!!g"
- sed "$remove_intl" $1/$dir/$file | cmp -s - $dir/$gnulib_mk || {
+ sed "$remove_intl" $1/$dir/$file | cmp - $dir/$gnulib_mk > /dev/null || {
echo "$0: Copying $1/$dir/$file to $dir/$gnulib_mk ..." &&
rm -f $dir/$gnulib_mk &&
sed "$remove_intl" $1/$dir/$file >$dir/$gnulib_mk