@@ -41,6 +41,9 @@ function short_source {

     file=${file#$RC_DIR/}

     printf "%-40s " "$file:${called[1]}:${called[0]}"

 }

+# PS4 is exported to child shells and uses the 'short_source' function, so

+# export it so child shells have access to the 'short_source' function also.

+export -f short_source

 # Retrieve an image from a URL and upload into Glance.

@@ -240,7 +240,6 @@ echo "$STACK_USER ALL=(root) NOPASSWD:ALL" >$TEMPFILE

 # see them by forcing ``PATH``

 echo "Defaults:$STACK_USER secure_path=/sbin:/usr/sbin:/usr/bin:/bin:/usr/local/sbin:/usr/local/bin" >> $TEMPFILE

 echo "Defaults:$STACK_USER !requiretty" >> $TEMPFILE

-echo "Defaults env_keep += PS4" >> $TEMPFILE

 chmod 0440 $TEMPFILE

 sudo chown root:root $TEMPFILE

 sudo mv $TEMPFILE /etc/sudoers.d/50_stack_sh

@@ -22,6 +22,9 @@ function short_source {

     file=${file#$RC_DIR/}

     printf "%-40s " "$file:${called[1]}:${called[0]}"

 }

+# PS4 is exported to child shells and uses the 'short_source' function, so

+# export it so child shells have access to the 'short_source' function also.

+export -f short_source

 set -o xtrace