Update vendor, move to labstack/echo/v4 Fixes #698

12 files changed, 217 insertions, 87 deletions

diff --git a/vendor/github.com/mattn/go-colorable/.travis.yml b/vendor/github.com/mattn/go-colorable/.travis.yml
index 42768b8b..98db8f06 100644
--- a/vendor/github.com/mattn/go-colorable/.travis.yml
+++ b/vendor/github.com/mattn/go-colorable/.travis.yml
@@ -2,7 +2,8 @@ language: go
 go:
   - tip
 
-sudo: false
-
+before_install:
+  - go get github.com/mattn/goveralls
+  - go get golang.org/x/tools/cmd/cover
 script:
- - go test -v
+  - $HOME/gopath/bin/goveralls -repotoken xnXqRGwgW3SXIguzxf90ZSK1GPYZPaGrw
diff --git a/vendor/github.com/mattn/go-colorable/README.md b/vendor/github.com/mattn/go-colorable/README.md
index e84226a7..56729a92 100644
--- a/vendor/github.com/mattn/go-colorable/README.md
+++ b/vendor/github.com/mattn/go-colorable/README.md
@@ -1,5 +1,10 @@
 # go-colorable
 
+[![Godoc Reference](https://godoc.org/github.com/mattn/go-colorable?status.svg)](http://godoc.org/github.com/mattn/go-colorable)
+[![Build Status](https://travis-ci.org/mattn/go-colorable.svg?branch=master)](https://travis-ci.org/mattn/go-colorable)
+[![Coverage Status](https://coveralls.io/repos/github/mattn/go-colorable/badge.svg?branch=master)](https://coveralls.io/github/mattn/go-colorable?branch=master)
+[![Go Report Card](https://goreportcard.com/badge/mattn/go-colorable)](https://goreportcard.com/report/mattn/go-colorable)
+
 Colorable writer for windows.
 
 For example, most of logger packages doesn't show colors on windows. (I know we can do it with ansicon. But I don't want.)
diff --git a/vendor/github.com/mattn/go-colorable/colorable_appengine.go b/vendor/github.com/mattn/go-colorable/colorable_appengine.go
new file mode 100644
index 00000000..1f28d773
--- /dev/null
+++ b/vendor/github.com/mattn/go-colorable/colorable_appengine.go
@@ -0,0 +1,29 @@
+// +build appengine
+
+package colorable
+
+import (
+	"io"
+	"os"
+
+	_ "github.com/mattn/go-isatty"
+)
+
+// NewColorable return new instance of Writer which handle escape sequence.
+func NewColorable(file *os.File) io.Writer {
+	if file == nil {
+		panic("nil passed instead of *os.File to NewColorable()")
+	}
+
+	return file
+}
+
+// NewColorableStdout return new instance of Writer which handle escape sequence for stdout.
+func NewColorableStdout() io.Writer {
+	return os.Stdout
+}
+
+// NewColorableStderr return new instance of Writer which handle escape sequence for stderr.
+func NewColorableStderr() io.Writer {
+	return os.Stderr
+}
diff --git a/vendor/github.com/mattn/go-colorable/colorable_others.go b/vendor/github.com/mattn/go-colorable/colorable_others.go
index a7fe19a8..887f203d 100644
--- a/vendor/github.com/mattn/go-colorable/colorable_others.go
+++ b/vendor/github.com/mattn/go-colorable/colorable_others.go
@@ -1,10 +1,13 @@
 // +build !windows
+// +build !appengine
 
 package colorable
 
 import (
 	"io"
 	"os"
+
+	_ "github.com/mattn/go-isatty"
 )
 
 // NewColorable return new instance of Writer which handle escape sequence.
diff --git a/vendor/github.com/mattn/go-colorable/colorable_windows.go b/vendor/github.com/mattn/go-colorable/colorable_windows.go
index 628ad904..e17a5474 100644
--- a/vendor/github.com/mattn/go-colorable/colorable_windows.go
+++ b/vendor/github.com/mattn/go-colorable/colorable_windows.go
@@ -1,3 +1,6 @@
+// +build windows
+// +build !appengine
+
 package colorable
 
 import (
@@ -65,12 +68,13 @@ var (
 	procFillConsoleOutputAttribute = kernel32.NewProc("FillConsoleOutputAttribute")
 	procGetConsoleCursorInfo       = kernel32.NewProc("GetConsoleCursorInfo")
 	procSetConsoleCursorInfo       = kernel32.NewProc("SetConsoleCursorInfo")
+	procSetConsoleTitle            = kernel32.NewProc("SetConsoleTitleW")
 )
 
+// Writer provide colorable Writer to the console
 type Writer struct {
 	out     io.Writer
 	handle  syscall.Handle
-	lastbuf bytes.Buffer
 	oldattr word
 	oldpos  coord
 }
@@ -86,9 +90,8 @@ func NewColorable(file *os.File) io.Writer {
 		handle := syscall.Handle(file.Fd())
 		procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
 		return &Writer{out: file, handle: handle, oldattr: csbi.attributes, oldpos: coord{0, 0}}
-	} else {
-		return file
 	}
+	return file
 }
 
 // NewColorableStdout return new instance of Writer which handle escape sequence for stdout.
@@ -360,6 +363,45 @@ var color256 = map[int]int{
 	255: 0xeeeeee,
 }
 
+// `\033]0;TITLESTR\007`
+func doTitleSequence(er *bytes.Reader) error {
+	var c byte
+	var err error
+
+	c, err = er.ReadByte()
+	if err != nil {
+		return err
+	}
+	if c != '0' && c != '2' {
+		return nil
+	}
+	c, err = er.ReadByte()
+	if err != nil {
+		return err
+	}
+	if c != ';' {
+		return nil
+	}
+	title := make([]byte, 0, 80)
+	for {
+		c, err = er.ReadByte()
+		if err != nil {
+			return err
+		}
+		if c == 0x07 || c == '\n' {
+			break
+		}
+		title = append(title, c)
+	}
+	if len(title) > 0 {
+		title8, err := syscall.UTF16PtrFromString(string(title))
+		if err == nil {
+			procSetConsoleTitle.Call(uintptr(unsafe.Pointer(title8)))
+		}
+	}
+	return nil
+}
+
 // Write write data on console
 func (w *Writer) Write(data []byte) (n int, err error) {
 	var csbi consoleScreenBufferInfo
@@ -369,11 +411,6 @@ func (w *Writer) Write(data []byte) (n int, err error) {
 	var bw [1]byte
 loop:
 	for {
-		r1, _, err := procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
-		if r1 == 0 {
-			break loop
-		}
-
 		c1, err := er.ReadByte()
 		if err != nil {
 			break loop
@@ -385,12 +422,16 @@ loop:
 		}
 		c2, err := er.ReadByte()
 		if err != nil {
-			w.lastbuf.WriteByte(c1)
 			break loop
 		}
+
+		if c2 == ']' {
+			if err := doTitleSequence(er); err != nil {
+				break loop
+			}
+			continue
+		}
 		if c2 != 0x5b {
-			w.lastbuf.WriteByte(c1)
-			w.lastbuf.WriteByte(c2)
 			continue
 		}
 
@@ -399,9 +440,6 @@ loop:
 		for {
 			c, err := er.ReadByte()
 			if err != nil {
-				w.lastbuf.WriteByte(c1)
-				w.lastbuf.WriteByte(c2)
-				w.lastbuf.Write(buf.Bytes())
 				break loop
 			}
 			if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' {
@@ -411,7 +449,6 @@ loop:
 			buf.Write([]byte(string(c)))
 		}
 
-		var csbi consoleScreenBufferInfo
 		switch m {
 		case 'A':
 			n, err = strconv.Atoi(buf.String())
@@ -435,19 +472,16 @@ loop:
 				continue
 			}
 			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
-			csbi.cursorPosition.x -= short(n)
+			csbi.cursorPosition.x += short(n)
 			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
 		case 'D':
 			n, err = strconv.Atoi(buf.String())
 			if err != nil {
 				continue
 			}
-			if n, err = strconv.Atoi(buf.String()); err == nil {
-				var csbi consoleScreenBufferInfo
-				procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
-				csbi.cursorPosition.x += short(n)
-				procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
-			}
+			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			csbi.cursorPosition.x -= short(n)
+			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
 		case 'E':
 			n, err = strconv.Atoi(buf.String())
 			if err != nil {
@@ -474,58 +508,79 @@ loop:
 			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
 			csbi.cursorPosition.x = short(n - 1)
 			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
-		case 'H':
-			token := strings.Split(buf.String(), ";")
-			if len(token) != 2 {
-				continue
-			}
-			n1, err := strconv.Atoi(token[0])
-			if err != nil {
-				continue
-			}
-			n2, err := strconv.Atoi(token[1])
-			if err != nil {
-				continue
+		case 'H', 'f':
+			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			if buf.Len() > 0 {
+				token := strings.Split(buf.String(), ";")
+				switch len(token) {
+				case 1:
+					n1, err := strconv.Atoi(token[0])
+					if err != nil {
+						continue
+					}
+					csbi.cursorPosition.y = short(n1 - 1)
+				case 2:
+					n1, err := strconv.Atoi(token[0])
+					if err != nil {
+						continue
+					}
+					n2, err := strconv.Atoi(token[1])
+					if err != nil {
+						continue
+					}
+					csbi.cursorPosition.x = short(n2 - 1)
+					csbi.cursorPosition.y = short(n1 - 1)
+				}
+			} else {
+				csbi.cursorPosition.y = 0
 			}
-			csbi.cursorPosition.x = short(n2 - 1)
-			csbi.cursorPosition.y = short(n1 - 1)
 			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
 		case 'J':
-			n, err := strconv.Atoi(buf.String())
-			if err != nil {
-				continue
+			n := 0
+			if buf.Len() > 0 {
+				n, err = strconv.Atoi(buf.String())
+				if err != nil {
+					continue
+				}
 			}
-			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			var count, written dword
 			var cursor coord
+			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
 			switch n {
 			case 0:
 				cursor = coord{x: csbi.cursorPosition.x, y: csbi.cursorPosition.y}
+				count = dword(csbi.size.x - csbi.cursorPosition.x + (csbi.size.y-csbi.cursorPosition.y)*csbi.size.x)
 			case 1:
 				cursor = coord{x: csbi.window.left, y: csbi.window.top}
+				count = dword(csbi.size.x - csbi.cursorPosition.x + (csbi.window.top-csbi.cursorPosition.y)*csbi.size.x)
 			case 2:
 				cursor = coord{x: csbi.window.left, y: csbi.window.top}
+				count = dword(csbi.size.x - csbi.cursorPosition.x + (csbi.size.y-csbi.cursorPosition.y)*csbi.size.x)
 			}
-			var count, written dword
-			count = dword(csbi.size.x - csbi.cursorPosition.x + (csbi.size.y-csbi.cursorPosition.y)*csbi.size.x)
 			procFillConsoleOutputCharacter.Call(uintptr(w.handle), uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
 			procFillConsoleOutputAttribute.Call(uintptr(w.handle), uintptr(csbi.attributes), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
 		case 'K':
-			n, err := strconv.Atoi(buf.String())
-			if err != nil {
-				continue
+			n := 0
+			if buf.Len() > 0 {
+				n, err = strconv.Atoi(buf.String())
+				if err != nil {
+					continue
+				}
 			}
 			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
 			var cursor coord
+			var count, written dword
 			switch n {
 			case 0:
-				cursor = coord{x: csbi.cursorPosition.x, y: csbi.cursorPosition.y}
+				cursor = coord{x: csbi.cursorPosition.x + 1, y: csbi.cursorPosition.y}
+				count = dword(csbi.size.x - csbi.cursorPosition.x - 1)
 			case 1:
 				cursor = coord{x: csbi.window.left, y: csbi.window.top + csbi.cursorPosition.y}
+				count = dword(csbi.size.x - csbi.cursorPosition.x)
 			case 2:
 				cursor = coord{x: csbi.window.left, y: csbi.window.top + csbi.cursorPosition.y}
+				count = dword(csbi.size.x)
 			}
-			var count, written dword
-			count = dword(csbi.size.x - csbi.cursorPosition.x)
 			procFillConsoleOutputCharacter.Call(uintptr(w.handle), uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
 			procFillConsoleOutputAttribute.Call(uintptr(w.handle), uintptr(csbi.attributes), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
 		case 'm':
@@ -547,7 +602,7 @@ loop:
 						attr |= foregroundIntensity
 					case n == 7:
 						attr = ((attr & foregroundMask) << 4) | ((attr & backgroundMask) >> 4)
-					case 22 == n || n == 25 || n == 25:
+					case n == 22 || n == 25:
 						attr |= foregroundIntensity
 					case n == 27:
 						attr = ((attr & foregroundMask) << 4) | ((attr & backgroundMask) >> 4)
@@ -634,17 +689,25 @@ loop:
 				}
 			}
 		case 'h':
+			var ci consoleCursorInfo
 			cs := buf.String()
-			if cs == "?25" {
-				var ci consoleCursorInfo
+			if cs == "5>" {
+				procGetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
+				ci.visible = 0
+				procSetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
+			} else if cs == "?25" {
 				procGetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
 				ci.visible = 1
 				procSetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
 			}
 		case 'l':
+			var ci consoleCursorInfo
 			cs := buf.String()
-			if cs == "?25" {
-				var ci consoleCursorInfo
+			if cs == "5>" {
+				procGetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
+				ci.visible = 1
+				procSetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
+			} else if cs == "?25" {
 				procGetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
 				ci.visible = 0
 				procSetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
@@ -656,7 +719,8 @@ loop:
 			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&w.oldpos)))
 		}
 	}
-	return len(data) - w.lastbuf.Len(), nil
+
+	return len(data), nil
 }
 
 type consoleColor struct {
@@ -700,22 +764,22 @@ func (c consoleColor) backgroundAttr() (attr word) {
 }
 
 var color16 = []consoleColor{
-	consoleColor{0x000000, false, false, false, false},
-	consoleColor{0x000080, false, false, true, false},
-	consoleColor{0x008000, false, true, false, false},
-	consoleColor{0x008080, false, true, true, false},
-	consoleColor{0x800000, true, false, false, false},
-	consoleColor{0x800080, true, false, true, false},
-	consoleColor{0x808000, true, true, false, false},
-	consoleColor{0xc0c0c0, true, true, true, false},
-	consoleColor{0x808080, false, false, false, true},
-	consoleColor{0x0000ff, false, false, true, true},
-	consoleColor{0x00ff00, false, true, false, true},
-	consoleColor{0x00ffff, false, true, true, true},
-	consoleColor{0xff0000, true, false, false, true},
-	consoleColor{0xff00ff, true, false, true, true},
-	consoleColor{0xffff00, true, true, false, true},
-	consoleColor{0xffffff, true, true, true, true},
+	{0x000000, false, false, false, false},
+	{0x000080, false, false, true, false},
+	{0x008000, false, true, false, false},
+	{0x008080, false, true, true, false},
+	{0x800000, true, false, false, false},
+	{0x800080, true, false, true, false},
+	{0x808000, true, true, false, false},
+	{0xc0c0c0, true, true, true, false},
+	{0x808080, false, false, false, true},
+	{0x0000ff, false, false, true, true},
+	{0x00ff00, false, true, false, true},
+	{0x00ffff, false, true, true, true},
+	{0xff0000, true, false, false, true},
+	{0xff00ff, true, false, true, true},
+	{0xffff00, true, true, false, true},
+	{0xffffff, true, true, true, true},
 }
 
 type hsv struct {
diff --git a/vendor/github.com/mattn/go-colorable/noncolorable.go b/vendor/github.com/mattn/go-colorable/noncolorable.go
index ca588c78..9721e16f 100644
--- a/vendor/github.com/mattn/go-colorable/noncolorable.go
+++ b/vendor/github.com/mattn/go-colorable/noncolorable.go
@@ -7,8 +7,7 @@ import (
 
 // NonColorable hold writer but remove escape sequence.
 type NonColorable struct {
-	out     io.Writer
-	lastbuf bytes.Buffer
+	out io.Writer
 }
 
 // NewNonColorable return new instance of Writer which remove escape sequence from Writer.
@@ -33,12 +32,9 @@ loop:
 		}
 		c2, err := er.ReadByte()
 		if err != nil {
-			w.lastbuf.WriteByte(c1)
 			break loop
 		}
 		if c2 != 0x5b {
-			w.lastbuf.WriteByte(c1)
-			w.lastbuf.WriteByte(c2)
 			continue
 		}
 
@@ -46,9 +42,6 @@ loop:
 		for {
 			c, err := er.ReadByte()
 			if err != nil {
-				w.lastbuf.WriteByte(c1)
-				w.lastbuf.WriteByte(c2)
-				w.lastbuf.Write(buf.Bytes())
 				break loop
 			}
 			if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' {
@@ -57,5 +50,6 @@ loop:
 			buf.Write([]byte(string(c)))
 		}
 	}
-	return len(data) - w.lastbuf.Len(), nil
+
+	return len(data), nil
 }
diff --git a/vendor/github.com/mattn/go-isatty/.travis.yml b/vendor/github.com/mattn/go-isatty/.travis.yml
index b8111d67..5597e026 100644
--- a/vendor/github.com/mattn/go-isatty/.travis.yml
+++ b/vendor/github.com/mattn/go-isatty/.travis.yml
@@ -1,8 +1,13 @@
 language: go
 go:
   - tip
+
+os:
+  - linux
+  - osx
+
 before_install:
   - go get github.com/mattn/goveralls
   - go get golang.org/x/tools/cmd/cover
 script:
-    - $HOME/gopath/bin/goveralls -repotoken 3gHdORO5k5ziZcWMBxnd9LrMZaJs8m9x5
+  - $HOME/gopath/bin/goveralls -repotoken 3gHdORO5k5ziZcWMBxnd9LrMZaJs8m9x5
diff --git a/vendor/github.com/mattn/go-isatty/README.md b/vendor/github.com/mattn/go-isatty/README.md
index 8e4365f4..1e69004b 100644
--- a/vendor/github.com/mattn/go-isatty/README.md
+++ b/vendor/github.com/mattn/go-isatty/README.md
@@ -1,6 +1,9 @@
 # go-isatty
 
-[![Build Status](https://travis-ci.org/mattn/go-isatty.svg?branch=master)](https://travis-ci.org/mattn/go-isatty) [![Coverage Status](https://coveralls.io/repos/github/mattn/go-isatty/badge.svg?branch=master)](https://coveralls.io/github/mattn/go-isatty?branch=master)
+[![Godoc Reference](https://godoc.org/github.com/mattn/go-isatty?status.svg)](http://godoc.org/github.com/mattn/go-isatty)
+[![Build Status](https://travis-ci.org/mattn/go-isatty.svg?branch=master)](https://travis-ci.org/mattn/go-isatty)
+[![Coverage Status](https://coveralls.io/repos/github/mattn/go-isatty/badge.svg?branch=master)](https://coveralls.io/github/mattn/go-isatty?branch=master)
+[![Go Report Card](https://goreportcard.com/badge/mattn/go-isatty)](https://goreportcard.com/report/mattn/go-isatty)
 
 isatty for golang
 
diff --git a/vendor/github.com/mattn/go-isatty/isatty_appengine.go b/vendor/github.com/mattn/go-isatty/isatty_appengine.go
index 83c58877..9584a988 100644
--- a/vendor/github.com/mattn/go-isatty/isatty_appengine.go
+++ b/vendor/github.com/mattn/go-isatty/isatty_appengine.go
@@ -7,3 +7,9 @@ package isatty
 func IsTerminal(fd uintptr) bool {
 	return false
 }
+
+// IsCygwinTerminal() return true if the file descriptor is a cygwin or msys2
+// terminal. This is also always false on this environment.
+func IsCygwinTerminal(fd uintptr) bool {
+	return false
+}
diff --git a/vendor/github.com/mattn/go-isatty/isatty_linux.go b/vendor/github.com/mattn/go-isatty/isatty_linux.go
index 9d24bac1..7384cf99 100644
--- a/vendor/github.com/mattn/go-isatty/isatty_linux.go
+++ b/vendor/github.com/mattn/go-isatty/isatty_linux.go
@@ -1,5 +1,5 @@
 // +build linux
-// +build !appengine
+// +build !appengine,!ppc64,!ppc64le
 
 package isatty
 
diff --git a/vendor/github.com/mattn/go-isatty/isatty_linux_ppc64x.go b/vendor/github.com/mattn/go-isatty/isatty_linux_ppc64x.go
new file mode 100644
index 00000000..44e5d213
--- /dev/null
+++ b/vendor/github.com/mattn/go-isatty/isatty_linux_ppc64x.go
@@ -0,0 +1,19 @@
+// +build linux
+// +build ppc64 ppc64le
+
+package isatty
+
+import (
+	"unsafe"
+
+	syscall "golang.org/x/sys/unix"
+)
+
+const ioctlReadTermios = syscall.TCGETS
+
+// IsTerminal return true if the file descriptor is terminal.
+func IsTerminal(fd uintptr) bool {
+	var termios syscall.Termios
+	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
+	return err == 0
+}
diff --git a/vendor/github.com/mattn/go-isatty/isatty_others.go b/vendor/github.com/mattn/go-isatty/isatty_others.go
index 616832d2..9d8b4a59 100644
--- a/vendor/github.com/mattn/go-isatty/isatty_others.go
+++ b/vendor/github.com/mattn/go-isatty/isatty_others.go
@@ -1,8 +1,9 @@
-// +build !windows appengine
+// +build !windows
+// +build !appengine
 
 package isatty
 
-// IsCygwinTerminal() return true if the file descriptor is a cygwin or msys2
+// IsCygwinTerminal return true if the file descriptor is a cygwin or msys2
 // terminal. This is also always false on this environment.
 func IsCygwinTerminal(fd uintptr) bool {
 	return false