code review 126440043: path/filepath: make Abs handle paths like c:a.txt properly

src/pkg/path/filepath/path_plan9.go

 // Copyright 2010 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 filepath
 
 import "strings"
 
 // IsAbs returns true if the path is absolute.
 func IsAbs(path string) bool {
@@ skipping 10 matching lines @@
 func HasPrefix(p, prefix string) bool {
         return strings.HasPrefix(p, prefix)
 }
 
 func splitList(path string) []string {
         if path == "" {
                 return []string{}
         }
         return strings.Split(path, string(ListSeparator))
 }
+
+func abs(path string) (string, error) {
+        return unixAbs(path)
+}