The output of ewmhstatus shall be fed to dzen2.
Provide the current desktop name and window title.
Read external informations from the fifo defined by the EWMHSTATUS_FIFO environment variable.
ewmhstatus [FONT_FAMILY [FONT_SIZE [HORIZONTAL_PADDING]]]
Current Desktop Name Current Window Title Fifo Informations
[ -e "$EWMHSTATUS_FIFO" ] && rm "$EWMHSTATUS_FIFO"
mkfifo "$EWMHSTATUS_FIFO"
ewmhstatus | dzen2 -ta l &
i3status > "$EWMHSTATUS_FIFO" &
XCB, Cairo.