shell - nested traps

inner.sh

#!/bin/bash

err_report() {
    echo "error in inner script: $(caller):$1"
}

trap 'err_report $LINENO' ERR

echo "INNER SCRIPT"




false

outer.sh

#!/bin/bash

err_report() {
    echo "error in outer script: $(caller):$1"
}

trap 'err_report $LINENO' ERR

echo "OUTER SCRIPT"

./inner.sh

I wanted to know what happens if I have nested shell scripts both adding a error trap.

the output of calling ./outer.sh :

OUTER SCRIPT
INNER SCRIPT
error in inner script: 14 ./inner.sh:14
error in outer script: 11 ./outer.sh:11

This is what I wished it would be, so I can add some cleanup in the nested script, but the outer scripts also will do its cleanup.