From fffdd82c00a338f427815ef8844cf5135e49e1f4 Mon Sep 17 00:00:00 2001
From: Aaron Berns <aaron.berns@uniteus.com>
Date: Tue, 20 Aug 2019 11:09:53 -0400
Subject: [PATCH] add ability to combine multiple error strings to Error()
 function

---
 context.go | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/context.go b/context.go
index 4273389..11bb4f1 100644
--- a/context.go
+++ b/context.go
@@ -308,12 +308,18 @@ func (e *errRequiredFlags) Error() string {
 		}
 	}
 
+	var allErrors []string
 	numberOfMissingFlags := len(missingFlagNames)
 	if numberOfMissingFlags == 1 {
-		return fmt.Sprintf("Required flag %q not set", missingFlagNames[0])
+		allErrors = append(allErrors, fmt.Sprintf("Required flag %q not set", missingFlagNames[0]))
+	} else {
+		joinedMissingFlags := strings.Join(missingFlagNames, ", ")
+		allErrors = append(allErrors, fmt.Sprintf("Required flags %q not set", joinedMissingFlags))
 	}
-	joinedMissingFlags := strings.Join(missingFlagNames, ", ")
-	return fmt.Sprintf("Required flags %q not set", joinedMissingFlags)
+
+	// handle user defined errors and append
+
+	return strings.Join(allErrors, "\n")
 }
 
 func (e *errRequiredFlags) getMissingFlags() map[string]bool {