From 6db418e461936303d1082600f0efe23cd57f8c2c Mon Sep 17 00:00:00 2001
From: Artem Nezvigin <artem@artnez.com>
Date: Thu, 2 Oct 2014 15:16:29 -0700
Subject: [PATCH] Add Context.GlobalFlagNames()

---
 context.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/context.go b/context.go
index 8b44148..e4b0da6 100644
--- a/context.go
+++ b/context.go
@@ -128,6 +128,18 @@ func (c *Context) FlagNames() (names []string) {
 	return
 }
 
+// Returns a slice of global flag names used by the app.
+func (c *Context) GlobalFlagNames() (names []string) {
+	for _, flag := range c.App.Flags {
+		name := strings.Split(flag.getName(), ",")[0]
+		if name == "help" || name == "version" {
+			continue
+		}
+		names = append(names, name)
+	}
+	return
+}
+
 type Args []string
 
 // Returns the command line arguments associated with the context.