trap2.sub

android-w.song.android.widget

set +e
trap 'echo ERRTRAP' ERR

false
false
false

echo after falses

if ! false; then
	echo if negation ok
fi

! false
echo after negation 

while false; do
	echo while negation ok
done

echo after while

./trap2a.sub

echo $(false ; echo command substitution)