Support for global flags in help text

flag.go

@@ -0,0 +1,27 @@
+package cli
+
+import "fmt"
+
+type Flag interface {
+  fmt.Stringer
+}
+
+type BoolFlag struct {
+  Name string
+  Value bool
+  Usage string
+}
+
+type StringFlag struct {
+  Name string
+  Value string
+  Usage string
+}
+
+func (f StringFlag) String() string {
+  return fmt.Sprintf("--%v 'string'\t%v", f.Name, f.Usage)
+}
+
+func (f BoolFlag) String() string {
+  return fmt.Sprintf("--%v\t%v", f.Name, f.Usage)
+}