doLineUp();
caretLine = doLineUp();
void doSelectionLineUp() {	int oldCaretX = caretX;		if (caretLine == 0) {		caretOffset = 0;	}	else {		doLineUp();	}	setMouseWordSelectionAnchor();		showCaret();	doSelection(SWT.LEFT);	// save the original horizontal caret position		caretX = oldCaretX;}