In chapter 19 of Micheal Stackpole’s Star Wars: X-Wing, Rogue Squadron, we have the following passage:
“And after that, Ackbar willing and Salm being sanguine, we’ll bleed the Imperials pale of luck and let out dead rest that much easier.”
The word sanguine is usually used in reference to the idea of people having one of four “bodily humors” that controlled things like a person’s disposition. Because of this, sanguine means confident, or optimistic when it’s applied to someone’s personality. However, sanguine is also derived from the Latin word for blood (sanguis) and is related to a word meaning bloodthirsty (sanguinary) making this a rather clever choice or words right before Wedge declares that they will “bleed” the Empire pale.