if test $# = 0; then
    exec "$THIS_SH" var_subst_in_for.tests abc "d e"
fi

echo 'Testing: in x y z'
for a in x y z; do echo ".$a."; done

echo 'Testing: in u $empty v'
empty=''
for a in u $empty v; do echo ".$a."; done

echo 'Testing: in u " $empty" v'
empty=''
for a in u " $empty" v; do echo ".$a."; done

echo 'Testing: in u $empty $empty$a v'
a='a'
for a in u $empty $empty$a v; do echo ".$a."; done

echo 'Testing: in $a_b'
a_b='a b'
for a in $a_b; do echo ".$a."; done

echo 'Testing: in $*'
for a in $*; do echo ".$a."; done

echo 'Testing: in $@'
for a in $@; do echo ".$a."; done

echo 'Testing: in -$*-'
for a in -$*-; do echo ".$a."; done

echo 'Testing: in -$@-'
for a in -$@-; do echo ".$a."; done

echo 'Testing: in $a_b -$a_b-'
a_b='a b'
for a in $a_b -$a_b-; do echo ".$a."; done

echo Finished