posix conformance fixes

tests/printf.right

@@ -296,3 +296,23 @@ x      +123x
 x      +123x
 x      +123x
 x      +123x
+abcd
+ab
+ 123
+  123
+ 173
+  7b
+  7B
+  hello
+ hello
+ 123
+ 6
+123 --
+123  --
+173 --
+7b  --
+7B  --
+hello  --
+hello --
+123 --
+6 --

tests/printf.tests

@@ -329,3 +329,4 @@ ${THIS_SH} ./printf1.sub
 ${THIS_SH} ./printf2.sub
 ${THIS_SH} ./printf3.sub
 ${THIS_SH} ./printf4.sub
+${THIS_SH} ./printf5.sub

tests/printf5.sub

@@ -0,0 +1,36 @@
+#   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/>.
+#
+
+printf "%.4s\n" abcde
+printf "%.2b\n" abcde
+
+printf "%4d\n" 123
+printf "%5i\n" 123
+printf "%4o\n" 123
+printf "%4x\n" 123
+printf "%4X\n" 123
+printf "%7b\n" hello
+printf "%6s\n" hello
+printf "%4u\n" 123
+printf "%2c\n" 65
+
+printf "%-4d--\n" 123
+printf "%-5i--\n" 123
+printf "%-4o--\n" 123
+printf "%-4x--\n" 123
+printf "%-4X--\n" 123
+printf "%-7b--\n" hello
+printf "%-6s--\n" hello
+printf "%-4u--\n" 123
+printf "%-2c--\n" 65

tests/read.tests

@@ -115,3 +115,6 @@ ${THIS_SH} ./read7.sub
 
 # test behavior of read -n and read -d on regular files
 ${THIS_SH} ./read8.sub
+
+# test behavior of trailing IFS whitespace - POSIX conformance
+${THIS_SH} ./read9.sub

tests/read9.sub

@@ -0,0 +1,41 @@
+#   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/>.
+#
+: ${TMPDIR:=/var/tmp}
+
+TESTDIR=${TMPDIR}/read9-test-$$
+mkdir ${TESTDIR}
+cd $TESTDIR ||  {
+        echo "$TESTDIR: cannot cd" >&2
+        exit 1
+}
+
+printf '  line\tb \t\r\f\v\n'  > read9.stdin || exit 1
+printf 'var1="  line", var2="b "\n' > read9.expout || exit 1
+
+IFS=$'\t\r\f\v'
+
+{
+           # line 2
+           unset var1 var2
+           read var1 var2 &&
+           printf 'var1="%s", var2="%s"\n' "$var1" "$var2"
+} < read9.stdin > read9.stdout 2>&1
+
+cmp read9.expout read9.stdout || {
+	echo "read9.sub: expected output and actual output differ"
+	diff read9.expout read9.stdout
+}
+
+cd $OLDPWD
+rm -rf $TESTDIR