From 2184282308566ad6fd445ea55ab755019e360d77 Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@golang.org>
Date: Tue, 14 May 2013 09:43:56 -0700
Subject: [PATCH] cmd/api: don't print out except.txt removed features to
 stdout

It's just noise. They've already been acknowledged in except.txt.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/9392047
---
 src/cmd/api/goapi.go      | 7 ++++++-
 src/cmd/api/goapi_test.go | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/cmd/api/goapi.go b/src/cmd/api/goapi.go
index ff75f00e39..46b5f3bae8 100644
--- a/src/cmd/api/goapi.go
+++ b/src/cmd/api/goapi.go
@@ -231,7 +231,12 @@ func compareAPI(w io.Writer, features, required, optional, exception []string) (
 		case len(features) == 0 || (len(required) > 0 && required[0] < features[0]):
 			feature := take(&required)
 			if exceptionSet[feature] {
-				fmt.Fprintf(w, "~%s\n", feature)
+				// An "unfortunate" case: the feature was once
+				// included in the API (e.g. go1.txt), but was
+				// subsequently removed. These are already
+				// acknowledged by being in the file
+				// "api/except.txt". No need to print them out
+				// here.
 			} else if featureSet[featureWithoutContext(feature)] {
 				// okay.
 			} else {
diff --git a/src/cmd/api/goapi_test.go b/src/cmd/api/goapi_test.go
index 1a86c0ec70..226748ac4a 100644
--- a/src/cmd/api/goapi_test.go
+++ b/src/cmd/api/goapi_test.go
@@ -110,7 +110,7 @@ func TestCompareAPI(t *testing.T) {
 			features:  []string{"A", "C"},
 			exception: []string{"B"},
 			ok:        true,
-			out:       "~B\n",
+			out:       "",
 		},
 		{
 			// http://golang.org/issue/4303