1 files changed, 15 insertions, 0 deletions
diff --git a/src/cmd/go/internal/base/env.go b/src/cmd/go/internal/base/env.go
new file mode 100644
index 0000000..5f2665d
--- /dev/null
+++ b/src/cmd/go/internal/base/env.go
@@ -0,0 +1,15 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package base
+
+// AppendPWD returns the result of appending PWD=dir to the environment base.
+//
+// The resulting environment makes os.Getwd more efficient for a subprocess
+// running in dir.
+func AppendPWD(base []string, dir string) []string {
+	// Internally we only use absolute paths, so dir is absolute.
+	// Even if dir is not absolute, no harm done.
+	return append(base, "PWD="+dir)
+}