Change &optional branches to &rest branches in `-if-let`s

dash.el

@@ -821,31 +821,31 @@ body."
      (when it
        ,@body)))
 
-(defmacro -if-let (var-val then &optional else)
+(defmacro -if-let (var-val then &rest else)
   "If VAL evaluates to non-nil, bind it to VAR and do THEN,
 otherwise do ELSE. VAR-VAL should be a (VAR VAL) pair."
   (let ((var (car var-val))
         (val (cadr var-val)))
     `(let ((,var ,val))
-       (if ,var ,then ,else))))
+       (if ,var ,then ,@else))))
 
-(defmacro -if-let* (vars-vals then &optional else)
+(defmacro -if-let* (vars-vals then &rest else)
   "If all VALS evaluate to true, bind them to their corresponding
   VARS and do THEN, otherwise do ELSE. VARS-VALS should be a list
   of (VAR VAL) pairs (corresponding to the bindings of `let*')."
   (let ((first-pair (car vars-vals))
         (rest (cdr vars-vals)))
     (if (= (length vars-vals) 1)
-        `(-if-let ,first-pair ,then ,else)
+        `(-if-let ,first-pair ,then ,@else)
       `(-if-let ,first-pair
-         (-if-let* ,rest ,then ,else)
-         ,else))))
+           (-if-let* ,rest ,then ,@else)
+         ,@else))))
 
-(defmacro --if-let (val then &optional else)
+(defmacro --if-let (val then &rest else)
   "If VAL evaluates to non-nil, bind it to `it' and do THEN,
 otherwise do ELSE."
   `(let ((it ,val))
-     (if it ,then ,else)))
+     (if it ,then ,@else)))
 
 (put '-when-let 'lisp-indent-function 1)
 (put '-when-let* 'lisp-indent-function 1)