gtk:text-buffer-paste-clipboard (buffer clipboard &key override editable)

buffer -- a gtk:text-buffer object
clipboard -- a gdk:clipboard object to paste from
override -- a gtk:text-iter location to insert pasted text, or nil to insert at the cursor
editable -- a boolean whether the text buffer is editable by default

Pastes the contents of a clipboard. If the override argument is nil, the pasted text will be inserted at the cursor position, or the buffer selection will be replaced if the selection is non-empty. Pasting is asynchronous, that is, we will ask for the paste data and return, and at some point later after the main loop runs, the paste data will be inserted.