if mutt -v | grep sidebar >/dev/null 2>&1; then
echo 'mutt/display: enabling mutt sidebar settings'
sed_i 's/^#set sidebar_/set sidebar_/' mutt/display
if mutt -v | grep sidebar >/dev/null 2>&1; then
echo 'mutt/display: enabling mutt sidebar settings'
sed_i 's/^#set sidebar_/set sidebar_/' mutt/display