a.
-a-b-
-a-b -
-a  b-
-a  b-
-a-b\-
-a  b\-
-\-a  b\-
-\ a  b\-
-\-a  b\-
-\ a  b\-
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <abcd>
1: x[A] y[B] z[]
1a:
2: x[A B]
[A B ]
[ A B ]
==aa==
====
====
argv[1] = < foo>
argv[1] = < foo>
argv[1] = <foo>
argv[1] = < foo>
argv[1] = <foo>
argv[1] = <foo>
argv[1] = < foo>
a = abcdefg
a = xyz
a = -xyz 123-
a = abc
1
4
1
4
./read2.sub: line 13: read: -3: invalid timeout specification
1
4
abcde
./read3.sub: line 4: read: -1: invalid number
abc
ab
#
while read -u 3 var
do
echo "$var"
done 3<$0
argv[1] = <>
argv[1] = <>
argv[1] = <>
FOO
argv[1] = <>
argv[1] = <3>
argv[1] = <>
argv[2] = <>
argv[3] = <>
FOO
       0       0       0