}
OPT_ACTION=""
-OPT_CONTENT=""
OPT_ID=""
OPT_LED_COLOR=""
OPT_LED_OFF=""
if [ -n "$OPT_TITLE" ]; then set -- "$@" --es title "$OPT_TITLE"; fi
if [ -n "$OPT_VIBRATE" ]; then set -- "$@" --ela vibrate "$OPT_VIBRATE"; fi
-if [ -n "$OPT_CONTENT" ]; then
- echo $OPT_CONTENT | /data/data/com.termux/files/usr/libexec/termux-api Notification "$@"
+if [ -v OPT_CONTENT ]; then
+ # Note that we want to accept an empty content (--content "").
+ echo ${OPT_CONTENT:=""} | /data/data/com.termux/files/usr/libexec/termux-api Notification "$@"
else
/data/data/com.termux/files/usr/libexec/termux-api Notification "$@"
fi