try-expand-whole-kill

try-expand-whole-kill is a compiled Lisp function in `hippie-exp.el'.

(try-expand-whole-kill OLD)

Try to complete text with something from the kill ring.
The argument OLD has to be nil the first call of this function, and t
for subsequent calls (for further possible completions of the same
string). It returns t if a new completion is found, nil otherwise.