#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
a=7
echo 'abcdefg|xyz' | {
	read -d '|' a 
	echo a = "${a-unset}"
	cat -	# make sure we don't read too much
}

echo xyz 123 | {
	read -d ' ' a
	echo a = "${a-unset}"
}

echo xyz 123 | {
	read -d $'\n' a
	echo a = -"${a-unset}"-
}

a=44
echo abcd | {
	read -d d a
	echo a = $a
}

# incomplete and invalid multibyte characters followed by the delimiter
printf 'A\0B\315\0C\226\0' | while IFS= read -rd '' f; do printf '<%q>\n' "$f"; done
printf 'A\nB\315\nC\226\n' | while IFS= read -r f; do printf '<%q>\n' "$f"; done

printf '%b\0' winter spring 'summer\0200apple\0200banana\0200cherry' automn |
   while IFS= read -rd "" season; do LC_ALL=C printf "<%q>\n" "$season"; done

printf '%b\200' winter 'spring\0375' summer automn |
  while IFS= read -rd $'\200' season; do LC_ALL=C printf "<%q>\n" "$season"; done

# this test is encoding-dependent, and varies from system to system
#: ${TMPDIR:=/tmp}
#INFILE=$TMPDIR/read-in-$$
#printf '%b\243' winter 'spring\0375' '\0277summer' '\0277' automn > $INFILE
#
#LANG=zh_HK.big5hkscs
#while IFS= read -rd $'\243' season; do
#	LC_ALL=C printf "<%q>\n" "$season"
#done < $INFILE
#
#rm -f $INFILE

exit 0