check bug fixed plus a handy string

yargs · Nov 7, 2010 · a4843a9 · a4843a9
1 parent 32853b8
commit a4843a9
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/optimist.js b/lib/optimist.js
@@ -102,7 +102,9 @@ function Argv (args, cwd) {
 
     self.check = function (f) {
         try {
-            if (f(self.argv) === false) fail(err);
+            if (f(self.argv) === false) fail(
+                'Argument check failed: ' + f.toString()
+            );
         }
         catch (err) { fail(err) }