How do you configure the cutNewline setting for xfce4-terminal?

While in xfce4-terminal, when I triple-click a line, I don't want to copy the newline. I have a hunch that the important setting is, cutNewline ; but I'm not sure how to configure. I tried these lines in my ~/.Xresources file: 1. XTerm*VT100.cutNewline: false 1. xterm-256color.cutNewline: false (based on the guess that echo $TERM gives xterm-256color) Then reboot; but both didn't work. I also tried looking at xfconf-query like this:

$ xfconf-query -c xfce4-terminal -l -v
/misc-copy-on-select            true
/misc-show-unsafe-paste-dialog  false
/shortcuts-no-mnemonics         true

Also, I search the https://gitlab.xfce.org/apps/xfce4-terminal/-/blob/master/terminal/terminal-preferences.c page for "newline"; but didn't find any xfce4-terminal preference. Searching https://docs.xfce.org/apps/xfce4-terminal/usage page for "triple-click" does mention copying the line; but doesn't mention how to configure cutNewline setting. Maybe I'm configuring at the wrong layer.