if [[ "$TERM" =~ .*"xterm".* && ! -z "$WINDOWID" ]]; then
local prior_title="$(xprop -id $WINDOWID | perl -nle 'print $1 if /^WM_NAME.+= \"(.*)\"$/')"
if [ ! -z "$prior_title" ]; then
if [[ "$TERM" =~ .*"xterm".* && ! -z "$WINDOWID" ]]; then
local prior_title="$(xprop -id $WINDOWID | perl -nle 'print $1 if /^WM_NAME.+= \"(.*)\"$/')"
if [ ! -z "$prior_title" ]; then