From 9e51113ba4d6a308290ed4f9b9a66f5fb5b79085 Mon Sep 17 00:00:00 2001
From: Naveen Gogineni <dear.chap@gmail.com>
Date: Mon, 12 Sep 2022 08:54:22 -0400
Subject: [PATCH] Fix:(issue_1197) Set destination field from altsrc for slice
 flags

---
 altsrc/flag.go             | 6 ++++++
 altsrc/yaml_file_loader.go | 4 +---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/altsrc/flag.go b/altsrc/flag.go
index 1132ded..6e37e53 100644
--- a/altsrc/flag.go
+++ b/altsrc/flag.go
@@ -109,6 +109,9 @@ func (f *StringSliceFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSour
 				continue
 			}
 			underlyingFlag.Value = &sliceValue
+			if f.Destination != nil {
+				f.Destination.Set(sliceValue.Serialize())
+			}
 		}
 	}
 	return nil
@@ -137,6 +140,9 @@ func (f *IntSliceFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceC
 				continue
 			}
 			underlyingFlag.Value = &sliceValue
+			if f.Destination != nil {
+				f.Destination.Set(sliceValue.Serialize())
+			}
 		}
 	}
 	return nil
diff --git a/altsrc/yaml_file_loader.go b/altsrc/yaml_file_loader.go
index 315db18..62e8965 100644
--- a/altsrc/yaml_file_loader.go
+++ b/altsrc/yaml_file_loader.go
@@ -33,11 +33,9 @@ func NewYamlSourceFromFile(file string) (InputSourceContext, error) {
 // NewYamlSourceFromFlagFunc creates a new Yaml InputSourceContext from a provided flag name and source context.
 func NewYamlSourceFromFlagFunc(flagFileName string) func(cCtx *cli.Context) (InputSourceContext, error) {
 	return func(cCtx *cli.Context) (InputSourceContext, error) {
-		if cCtx.IsSet(flagFileName) {
-			filePath := cCtx.String(flagFileName)
+		if filePath := cCtx.String(flagFileName); filePath != "" {
 			return NewYamlSourceFromFile(filePath)
 		}
-
 		return defaultInputSource()
 	}
 }