code review 6736069: runtime, syscall, os: add os.ExecPath() (string, error)

src/pkg/os/executable_darwin.go

+// Copyright 2012 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 os
+
+var progPath string // set by ../runtime/progpath_darwin.c

[r, 2012/10/28 17:47:49]

you've still got some progpaths around, in different casings.

+
+var initCwd, initCwdErr = Getwd()
+
+func executable() (string, error) {
+        if progPath[0] != '/' {
+                if initCwdErr != nil {
+                        return progPath, initCwdErr
+                } else {
+                        if progPath[0] == '.' {
+                                // skip "./"
+                                progPath = progPath[2:]
+                        }
+                        return initCwd + "/" + progPath, nil
+                }
+        }
+        return progPath, nil
+}