Pressing Ctrl-x in nsxiv calls $XDG_CONFIG_HOME/nsxiv/exec/key-handler with next keypress is passed as an argument, current image or marked images are sent on stdin.
Pressing Ctrl-x in nsxiv calls $XDG_CONFIG_HOME/nsxiv/exec/key-handler with next keypress is passed as an argument, current image or marked images are sent on stdin.