libgo: update to Go1.14beta1

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/214297

4 files changed, 23 insertions, 15 deletions

diff --git a/libgo/go/path/example_test.go b/libgo/go/path/example_test.go
index 77fbfa9..3077729 100644
--- a/libgo/go/path/example_test.go
+++ b/libgo/go/path/example_test.go
@@ -104,11 +104,15 @@ func ExampleMatch() {
 }
 
 func ExampleSplit() {
-	fmt.Println(path.Split("static/myfile.css"))
-	fmt.Println(path.Split("myfile.css"))
-	fmt.Println(path.Split(""))
+	split := func(s string) {
+		dir, file := path.Split(s)
+		fmt.Printf("path.Split(%q) = dir: %q, file: %q\n", s, dir, file)
+	}
+	split("static/myfile.css")
+	split("myfile.css")
+	split("")
 	// Output:
-	// static/ myfile.css
-	//  myfile.css
-	//
+	// path.Split("static/myfile.css") = dir: "static/", file: "myfile.css"
+	// path.Split("myfile.css") = dir: "", file: "myfile.css"
+	// path.Split("") = dir: "", file: ""
 }
diff --git a/libgo/go/path/filepath/path.go b/libgo/go/path/filepath/path.go
index aba1717..26f1833 100644
--- a/libgo/go/path/filepath/path.go
+++ b/libgo/go/path/filepath/path.go
@@ -201,11 +201,13 @@ func Split(path string) (dir, file string) {
 	return path[:i+1], path[i+1:]
 }
 
-// Join joins any number of path elements into a single path, adding
-// a Separator if necessary. Join calls Clean on the result; in particular,
-// all empty strings are ignored.
-// On Windows, the result is a UNC path if and only if the first path
-// element is a UNC path.
+// Join joins any number of path elements into a single path,
+// separating them with an OS specific Separator. Empty elements
+// are ignored. The result is Cleaned. However, if the argument
+// list is empty or all its elements are empty, Join returns
+// an empty string.
+// On Windows, the result will only be a UNC path if the first
+// non-empty element is a UNC path.
 func Join(elem ...string) string {
 	return join(elem)
 }
diff --git a/libgo/go/path/filepath/path_unix.go b/libgo/go/path/filepath/path_unix.go
index fa0e40d..57341ed 100644
--- a/libgo/go/path/filepath/path_unix.go
+++ b/libgo/go/path/filepath/path_unix.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix darwin dragonfly freebsd hurd js,wasm linux nacl netbsd openbsd solaris
+// +build aix darwin dragonfly freebsd hurd js,wasm linux netbsd openbsd solaris
 
 package filepath
 
diff --git a/libgo/go/path/path.go b/libgo/go/path/path.go
index 5c90511..c513114 100644
--- a/libgo/go/path/path.go
+++ b/libgo/go/path/path.go
@@ -149,9 +149,11 @@ func Split(path string) (dir, file string) {
 	return path[:i+1], path[i+1:]
 }
 
-// Join joins any number of path elements into a single path, adding a
-// separating slash if necessary. The result is Cleaned; in particular,
-// all empty strings are ignored.
+// Join joins any number of path elements into a single path,
+// separating them with slashes. Empty elements are ignored.
+// The result is Cleaned. However, if the argument list is
+// empty or all its elements are empty, Join returns
+// an empty string.
 func Join(elem ...string) string {
 	for i, e := range elem {
 		if e != "" {