Reset args on re-parse even if emptyreset-args-even-if-empty

This ensures fs.Args() returns the expected thing after every parse.

Fixes #439.

1 files changed, 2 insertions, 2 deletions

diff --git a/flag.go b/flag.go
index 2b21b6f..3f2a084 100644
--- a/flag.go
+++ b/flag.go
@@ -1157,12 +1157,12 @@ func (f *FlagSet) Parse(arguments []string) error {
 	}
 	f.parsed = true
 
+	f.args = make([]string, 0, len(arguments))
+
 	if len(arguments) == 0 {
 		return nil
 	}
 
-	f.args = make([]string, 0, len(arguments))
-
 	set := func(flag *Flag, value string) error {
 		return f.Set(flag.Name, value)
 	}