EDIT: Turns out, I spoke too soon, there is no such option according to docs or from reading the code, maybe you have another plugin doing this?
EDIT2: found it: https://github.com/keith/edit-weechat
EDIT: Turns out, I spoke too soon, there is no such option according to docs or from reading the code, maybe you have another plugin doing this?
EDIT2: found it: https://github.com/keith/edit-weechat