From e0db26749279d8a4696a3963ca5e408f7fdbf342 Mon Sep 17 00:00:00 2001
From: James He <james@prysmaticlabs.com>
Date: Thu, 11 Aug 2022 15:49:12 -0500
Subject: [PATCH] adding in boolean alias support

---
 altsrc/flag.go      | 20 +++++++++++++-------
 altsrc/flag_test.go | 13 +++++++++++++
 2 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/altsrc/flag.go b/altsrc/flag.go
index 9801644..daac809 100644
--- a/altsrc/flag.go
+++ b/altsrc/flag.go
@@ -121,13 +121,19 @@ func (f *IntSliceFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceC
 
 // ApplyInputSourceValue applies a Bool value to the flagSet if required
 func (f *BoolFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error {
-	if f.set != nil && !cCtx.IsSet(f.Name) && !isEnvVarSet(f.EnvVars) && isc.isSet(f.BoolFlag.Name) {
-		value, err := isc.Bool(f.BoolFlag.Name)
-		if err != nil {
-			return err
-		}
-		for _, name := range f.Names() {
-			_ = f.set.Set(name, strconv.FormatBool(value))
+	if f.set != nil && !cCtx.IsSet(f.Name) && !isEnvVarSet(f.EnvVars) {
+		for _, name := range f.BoolFlag.Names() {
+			if isc.isSet(name) {
+				value, err := isc.Bool(name)
+				if err != nil {
+					return err
+				}
+				if value {
+					for _, n := range f.Names() {
+						_ = f.set.Set(n, strconv.FormatBool(value))
+					}
+				}
+			}
 		}
 	}
 	return nil
diff --git a/altsrc/flag_test.go b/altsrc/flag_test.go
index e3725f7..d97c184 100644
--- a/altsrc/flag_test.go
+++ b/altsrc/flag_test.go
@@ -178,6 +178,19 @@ func TestBoolApplyInputSourceMethodSet(t *testing.T) {
 	refute(t, true, c.Bool("test"))
 }
 
+func TestBoolApplyInputSourceMethodSet_Alias(t *testing.T) {
+	tis := testApplyInputSource{
+		Flag:     NewBoolFlag(&cli.BoolFlag{Name: "test", Aliases: []string{"test_alias"}}),
+		FlagName: "test_alias",
+		MapValue: true,
+	}
+	c := runTest(t, tis)
+	expect(t, true, c.Bool("test_alias"))
+
+	c = runRacyTest(t, tis)
+	refute(t, true, c.Bool("test_alias"))
+}
+
 func TestBoolApplyInputSourceMethodContextSet(t *testing.T) {
 	tis := testApplyInputSource{
 		Flag:               NewBoolFlag(&cli.BoolFlag{Name: "test"}),