From f73f9ad4ad3c425868f6b5568f0b9a8576505d12 Mon Sep 17 00:00:00 2001
From: Rob Pike <r@golang.org>
Date: Mon, 4 Oct 2010 11:57:48 +0200
Subject: [PATCH] fmt: allow %d on []byte Fixes #1159.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/2305043
---
 src/pkg/fmt/fmt_test.go | 3 +++
 src/pkg/fmt/print.go    | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/pkg/fmt/fmt_test.go b/src/pkg/fmt/fmt_test.go
index c8775ba3f2..f0d6a9c970 100644
--- a/src/pkg/fmt/fmt_test.go
+++ b/src/pkg/fmt/fmt_test.go
@@ -317,6 +317,8 @@ var fmttests = []fmtTest{
 	// slices with other formats
 	fmtTest{"%#x", []int{1, 2, 15}, `[0x1 0x2 0xf]`},
 	fmtTest{"%x", []int{1, 2, 15}, `[1 2 f]`},
+	fmtTest{"%d", []int{1, 2, 15}, `[1 2 15]`},
+	fmtTest{"%d", []byte{1, 2, 15}, `[1 2 15]`},
 	fmtTest{"%q", []string{"a", "b"}, `["a" "b"]`},
 
 	// renamings
@@ -334,6 +336,7 @@ var fmttests = []fmtTest{
 	fmtTest{"%X", renamedUint64(17), "11"},
 	fmtTest{"%o", renamedUintptr(18), "22"},
 	fmtTest{"%x", renamedString("thing"), "7468696e67"},
+	fmtTest{"%d", renamedBytes([]byte{1, 2, 15}), `[1 2 15]`},
 	fmtTest{"%q", renamedBytes([]byte("hello")), `"hello"`},
 	fmtTest{"%v", renamedFloat(11), "11"},
 	fmtTest{"%v", renamedFloat32(22), "22"},
diff --git a/src/pkg/fmt/print.go b/src/pkg/fmt/print.go
index 0f3dd44bf0..24b1eb32e0 100644
--- a/src/pkg/fmt/print.go
+++ b/src/pkg/fmt/print.go
@@ -439,7 +439,7 @@ func (p *pp) fmtString(v string, verb int, goSyntax bool, value interface{}) {
 }
 
 func (p *pp) fmtBytes(v []byte, verb int, goSyntax bool, depth int, value interface{}) {
-	if verb == 'v' {
+	if verb == 'v' || verb == 'd' {
 		if goSyntax {
 			p.buf.Write(bytesBytes)
 		} else {
-- 
2.50.0