Add default to option argument

diff --git a/src/main/opera.lisp b/src/main/opera.lisp
index b66a4c07cf1fecdafaab2eb3a7dfbd04e585317b..173ea488ac4b99d8d2810562003bf31da3dde530 100644 (file)
--- a/src/main/opera.lisp
+++ b/src/main/opera.lisp
@@ -187,8 +187,11 @@
 (defun option-present (option-name parsed-options)
  (find option-name parsed-options :key #'car))
 
-(defun option-argument (option-name parsed-options)
- (cadr (assoc option-name parsed-options)))
+(defun option-argument (option-name parsed-options &optional default)
+ (if
+  (option-present option-name parsed-options)
+  (cadr (assoc option-name parsed-options))
+  default))
 
 (defun option-arguments (option-name parsed-options)
  (mapcar #'cadr (remove option-name parsed-options :key #'car :test-not #'eql)))