From: Brad Fitzpatrick <bradfitz@golang.org>
Date: Thu, 18 Aug 2016 05:26:51 +0000 (+0000)
Subject: os: reference LookupEnv from the Getenv docs
X-Git-Tag: go1.8beta1~1778
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=55ea153b785249cfa9b15550d78eeb3df7d825d8;p=gostls13.git

os: reference LookupEnv from the Getenv docs

Fixes #16782

Change-Id: If54917bf5ca1588d8a6d443c3aa6e1d4ada6b620
Reviewed-on: https://go-review.googlesource.com/27322
Reviewed-by: anatoly techtonik <techtonik@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
---

diff --git a/src/os/env.go b/src/os/env.go
index 4a147144c3..aa83ee3a97 100644
--- a/src/os/env.go
+++ b/src/os/env.go
@@ -76,6 +76,7 @@ func getShellName(s string) (string, int) {
 
 // Getenv retrieves the value of the environment variable named by the key.
 // It returns the value, which will be empty if the variable is not present.
+// To distinguish between an empty value and an unset value, use LookupEnv.
 func Getenv(key string) string {
 	v, _ := syscall.Getenv(key)
 	return v