internal/debug: support color terminal for cygwin/msys2 (#17740)

- update go-colorable, go-isatty, go-runewidth packages
- use go-isatty instead of log/term and remove log/term package

23 files changed, 326 insertions, 296 deletions

diff --git a/internal/debug/flags.go b/internal/debug/flags.go
index 7d7eba98a..46c8fe9f8 100644
--- a/internal/debug/flags.go
+++ b/internal/debug/flags.go
@@ -25,11 +25,11 @@ import (
 	"runtime"
 
 	"github.com/ethereum/go-ethereum/log"
-	"github.com/ethereum/go-ethereum/log/term"
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/metrics/exp"
 	"github.com/fjl/memsize/memsizeui"
 	colorable "github.com/mattn/go-colorable"
+	"github.com/mattn/go-isatty"
 	"gopkg.in/urfave/cli.v1"
 )
 
@@ -101,7 +101,7 @@ var (
 )
 
 func init() {
-	usecolor := term.IsTty(os.Stderr.Fd()) && os.Getenv("TERM") != "dumb"
+	usecolor := (isatty.IsTerminal(os.Stderr.Fd()) || isatty.IsCygwinTerminal(os.Stderr.Fd())) && os.Getenv("TERM") != "dumb"
 	output := io.Writer(os.Stderr)
 	if usecolor {
 		output = colorable.NewColorableStderr()
diff --git a/log/term/LICENSE b/log/term/LICENSE
deleted file mode 100644
index f090cb42f..000000000
--- a/log/term/LICENSE
+++ /dev/null
@@ -1,21 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) 2014 Simon Eskildsen
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
diff --git a/log/term/terminal_appengine.go b/log/term/terminal_appengine.go
deleted file mode 100644
index c1b5d2a3b..000000000
--- a/log/term/terminal_appengine.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2013 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.
-
-// +build appengine
-
-package term
-
-// IsTty always returns false on AppEngine.
-func IsTty(fd uintptr) bool {
-	return false
-}
diff --git a/log/term/terminal_darwin.go b/log/term/terminal_darwin.go
deleted file mode 100644
index d8f351b1b..000000000
--- a/log/term/terminal_darwin.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2013 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.
-// +build !appengine
-
-package term
-
-import "syscall"
-
-const ioctlReadTermios = syscall.TIOCGETA
-
-type Termios syscall.Termios
diff --git a/log/term/terminal_freebsd.go b/log/term/terminal_freebsd.go
deleted file mode 100644
index cfaceab33..000000000
--- a/log/term/terminal_freebsd.go
+++ /dev/null
@@ -1,18 +0,0 @@
-package term
-
-import (
-	"syscall"
-)
-
-const ioctlReadTermios = syscall.TIOCGETA
-
-// Go 1.2 doesn't include Termios for FreeBSD. This should be added in 1.3 and this could be merged with terminal_darwin.
-type Termios struct {
-	Iflag  uint32
-	Oflag  uint32
-	Cflag  uint32
-	Lflag  uint32
-	Cc     [20]uint8
-	Ispeed uint32
-	Ospeed uint32
-}
diff --git a/log/term/terminal_linux.go b/log/term/terminal_linux.go
deleted file mode 100644
index 5290468d6..000000000
--- a/log/term/terminal_linux.go
+++ /dev/null
@@ -1,14 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2013 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.
-
-// +build !appengine
-
-package term
-
-import "syscall"
-
-const ioctlReadTermios = syscall.TCGETS
-
-type Termios syscall.Termios
diff --git a/log/term/terminal_netbsd.go b/log/term/terminal_netbsd.go
deleted file mode 100644
index f9bb9e1c2..000000000
--- a/log/term/terminal_netbsd.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package term
-
-import "syscall"
-
-const ioctlReadTermios = syscall.TIOCGETA
-
-type Termios syscall.Termios
diff --git a/log/term/terminal_notwindows.go b/log/term/terminal_notwindows.go
deleted file mode 100644
index c9af534f6..000000000
--- a/log/term/terminal_notwindows.go
+++ /dev/null
@@ -1,20 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2011 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.
-
-// +build linux,!appengine darwin freebsd openbsd netbsd
-
-package term
-
-import (
-	"syscall"
-	"unsafe"
-)
-
-// IsTty returns true if the given file descriptor is a terminal.
-func IsTty(fd uintptr) bool {
-	var termios Termios
-	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
-	return err == 0
-}
diff --git a/log/term/terminal_openbsd.go b/log/term/terminal_openbsd.go
deleted file mode 100644
index f9bb9e1c2..000000000
--- a/log/term/terminal_openbsd.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package term
-
-import "syscall"
-
-const ioctlReadTermios = syscall.TIOCGETA
-
-type Termios syscall.Termios
diff --git a/log/term/terminal_solaris.go b/log/term/terminal_solaris.go
deleted file mode 100644
index 033c16324..000000000
--- a/log/term/terminal_solaris.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package term
-
-import "golang.org/x/sys/unix"
-
-// IsTty returns true if the given file descriptor is a terminal.
-func IsTty(fd uintptr) bool {
-	_, err := unix.IoctlGetTermios(int(fd), unix.TCGETA)
-	return err == nil
-}
diff --git a/log/term/terminal_windows.go b/log/term/terminal_windows.go
deleted file mode 100644
index df3c30c15..000000000
--- a/log/term/terminal_windows.go
+++ /dev/null
@@ -1,26 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2011 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.
-
-// +build windows
-
-package term
-
-import (
-	"syscall"
-	"unsafe"
-)
-
-var kernel32 = syscall.NewLazyDLL("kernel32.dll")
-
-var (
-	procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
-)
-
-// IsTty returns true if the given file descriptor is a terminal.
-func IsTty(fd uintptr) bool {
-	var st uint32
-	r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, fd, uintptr(unsafe.Pointer(&st)), 0)
-	return r != 0 && e == 0
-}
diff --git a/vendor/github.com/mattn/go-colorable/README.md b/vendor/github.com/mattn/go-colorable/README.md
index e84226a73..56729a92c 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_others.go b/vendor/github.com/mattn/go-colorable/colorable_others.go
index a7fe19a8c..887f203dc 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 628ad904e..404e10ca0 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 (
@@ -26,6 +29,15 @@ const (
 	backgroundMask      = (backgroundRed | backgroundBlue | backgroundGreen | backgroundIntensity)
 )
 
+const (
+	genericRead  = 0x80000000
+	genericWrite = 0x40000000
+)
+
+const (
+	consoleTextmodeBuffer = 0x1
+)
+
 type wchar uint16
 type short int16
 type dword uint32
@@ -65,14 +77,18 @@ var (
 	procFillConsoleOutputAttribute = kernel32.NewProc("FillConsoleOutputAttribute")
 	procGetConsoleCursorInfo       = kernel32.NewProc("GetConsoleCursorInfo")
 	procSetConsoleCursorInfo       = kernel32.NewProc("SetConsoleCursorInfo")
+	procSetConsoleTitle            = kernel32.NewProc("SetConsoleTitleW")
+	procCreateConsoleScreenBuffer  = kernel32.NewProc("CreateConsoleScreenBuffer")
 )
 
+// Writer provide colorable Writer to the console
 type Writer struct {
-	out     io.Writer
-	handle  syscall.Handle
-	lastbuf bytes.Buffer
-	oldattr word
-	oldpos  coord
+	out       io.Writer
+	handle    syscall.Handle
+	althandle syscall.Handle
+	oldattr   word
+	oldpos    coord
+	rest      bytes.Buffer
 }
 
 // NewColorable return new instance of Writer which handle escape sequence from File.
@@ -86,9 +102,8 @@ 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.
@@ -360,20 +375,65 @@ 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
 	procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
 
-	er := bytes.NewReader(data)
+	handle := w.handle
+
+	var er *bytes.Reader
+	if w.rest.Len() > 0 {
+		var rest bytes.Buffer
+		w.rest.WriteTo(&rest)
+		w.rest.Reset()
+		rest.Write(data)
+		er = bytes.NewReader(rest.Bytes())
+	} else {
+		er = bytes.NewReader(data)
+	}
 	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
@@ -385,155 +445,202 @@ 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)
+
+		switch c2 {
+		case '>':
+			continue
+		case ']':
+			w.rest.WriteByte(c1)
+			w.rest.WriteByte(c2)
+			er.WriteTo(&w.rest)
+			if bytes.IndexByte(w.rest.Bytes(), 0x07) == -1 {
+				break loop
+			}
+			er = bytes.NewReader(w.rest.Bytes()[2:])
+			err := doTitleSequence(er)
+			if err != nil {
+				break loop
+			}
+			w.rest.Reset()
+			continue
+		// https://github.com/mattn/go-colorable/issues/27
+		case '7':
+			procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
+			w.oldpos = csbi.cursorPosition
+			continue
+		case '8':
+			procSetConsoleCursorPosition.Call(uintptr(handle), *(*uintptr)(unsafe.Pointer(&w.oldpos)))
+			continue
+		case 0x5b:
+			// execute part after switch
+		default:
 			continue
 		}
 
+		w.rest.WriteByte(c1)
+		w.rest.WriteByte(c2)
+		er.WriteTo(&w.rest)
+
 		var buf bytes.Buffer
 		var m byte
-		for {
-			c, err := er.ReadByte()
-			if err != nil {
-				w.lastbuf.WriteByte(c1)
-				w.lastbuf.WriteByte(c2)
-				w.lastbuf.Write(buf.Bytes())
-				break loop
-			}
+		for i, c := range w.rest.Bytes()[2:] {
 			if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' {
 				m = c
+				er = bytes.NewReader(w.rest.Bytes()[2+i+1:])
+				w.rest.Reset()
 				break
 			}
 			buf.Write([]byte(string(c)))
 		}
+		if m == 0 {
+			break loop
+		}
 
-		var csbi consoleScreenBufferInfo
 		switch m {
 		case 'A':
 			n, err = strconv.Atoi(buf.String())
 			if err != nil {
 				continue
 			}
-			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
 			csbi.cursorPosition.y -= short(n)
-			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+			procSetConsoleCursorPosition.Call(uintptr(handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
 		case 'B':
 			n, err = strconv.Atoi(buf.String())
 			if err != nil {
 				continue
 			}
-			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
 			csbi.cursorPosition.y += short(n)
-			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+			procSetConsoleCursorPosition.Call(uintptr(handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
 		case 'C':
 			n, err = strconv.Atoi(buf.String())
 			if err != nil {
 				continue
 			}
-			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(handle), uintptr(unsafe.Pointer(&csbi)))
+			csbi.cursorPosition.x += short(n)
+			procSetConsoleCursorPosition.Call(uintptr(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(handle), uintptr(unsafe.Pointer(&csbi)))
+			csbi.cursorPosition.x -= short(n)
+			if csbi.cursorPosition.x < 0 {
+				csbi.cursorPosition.x = 0
 			}
+			procSetConsoleCursorPosition.Call(uintptr(handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
 		case 'E':
 			n, err = strconv.Atoi(buf.String())
 			if err != nil {
 				continue
 			}
-			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
 			csbi.cursorPosition.x = 0
 			csbi.cursorPosition.y += short(n)
-			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+			procSetConsoleCursorPosition.Call(uintptr(handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
 		case 'F':
 			n, err = strconv.Atoi(buf.String())
 			if err != nil {
 				continue
 			}
-			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
 			csbi.cursorPosition.x = 0
 			csbi.cursorPosition.y -= short(n)
-			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+			procSetConsoleCursorPosition.Call(uintptr(handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
 		case 'G':
 			n, err = strconv.Atoi(buf.String())
 			if err != nil {
 				continue
 			}
-			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			procGetConsoleScreenBufferInfo.Call(uintptr(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
+			procSetConsoleCursorPosition.Call(uintptr(handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+		case 'H', 'f':
+			procGetConsoleScreenBufferInfo.Call(uintptr(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)))
+			procSetConsoleCursorPosition.Call(uintptr(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(handle), uintptr(unsafe.Pointer(&csbi)))
 			switch n {
 			case 0:
 				cursor = coord{x: csbi.cursorPosition.x, y: csbi.cursorPosition.y}
+				count = dword(csbi.size.x) - dword(csbi.cursorPosition.x) + dword(csbi.size.y-csbi.cursorPosition.y)*dword(csbi.size.x)
 			case 1:
 				cursor = coord{x: csbi.window.left, y: csbi.window.top}
+				count = dword(csbi.size.x) - dword(csbi.cursorPosition.x) + dword(csbi.window.top-csbi.cursorPosition.y)*dword(csbi.size.x)
 			case 2:
 				cursor = coord{x: csbi.window.left, y: csbi.window.top}
+				count = dword(csbi.size.x) - dword(csbi.cursorPosition.x) + dword(csbi.size.y-csbi.cursorPosition.y)*dword(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)))
+			procFillConsoleOutputCharacter.Call(uintptr(handle), uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
+			procFillConsoleOutputAttribute.Call(uintptr(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)))
+			procGetConsoleScreenBufferInfo.Call(uintptr(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}
+				count = dword(csbi.size.x - csbi.cursorPosition.x)
 			case 1:
-				cursor = coord{x: csbi.window.left, y: csbi.window.top + csbi.cursorPosition.y}
+				cursor = coord{x: csbi.window.left, y: 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}
+				cursor = coord{x: csbi.window.left, y: 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)))
+			procFillConsoleOutputCharacter.Call(uintptr(handle), uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
+			procFillConsoleOutputAttribute.Call(uintptr(handle), uintptr(csbi.attributes), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
 		case 'm':
-			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
 			attr := csbi.attributes
 			cs := buf.String()
 			if cs == "" {
-				procSetConsoleTextAttribute.Call(uintptr(w.handle), uintptr(w.oldattr))
+				procSetConsoleTextAttribute.Call(uintptr(handle), uintptr(w.oldattr))
 				continue
 			}
 			token := strings.Split(cs, ";")
@@ -547,7 +654,7 @@ 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)
@@ -572,6 +679,21 @@ loop:
 								attr |= n256foreAttr[n256]
 								i += 2
 							}
+						} else if len(token) == 5 && token[i+1] == "2" {
+							var r, g, b int
+							r, _ = strconv.Atoi(token[i+2])
+							g, _ = strconv.Atoi(token[i+3])
+							b, _ = strconv.Atoi(token[i+4])
+							i += 4
+							if r > 127 {
+								attr |= foregroundRed
+							}
+							if g > 127 {
+								attr |= foregroundGreen
+							}
+							if b > 127 {
+								attr |= foregroundBlue
+							}
 						} else {
 							attr = attr & (w.oldattr & backgroundMask)
 						}
@@ -599,6 +721,21 @@ loop:
 								attr |= n256backAttr[n256]
 								i += 2
 							}
+						} else if len(token) == 5 && token[i+1] == "2" {
+							var r, g, b int
+							r, _ = strconv.Atoi(token[i+2])
+							g, _ = strconv.Atoi(token[i+3])
+							b, _ = strconv.Atoi(token[i+4])
+							i += 4
+							if r > 127 {
+								attr |= backgroundRed
+							}
+							if g > 127 {
+								attr |= backgroundGreen
+							}
+							if b > 127 {
+								attr |= backgroundBlue
+							}
 						} else {
 							attr = attr & (w.oldattr & foregroundMask)
 						}
@@ -630,33 +767,56 @@ loop:
 							attr |= backgroundBlue
 						}
 					}
-					procSetConsoleTextAttribute.Call(uintptr(w.handle), uintptr(attr))
+					procSetConsoleTextAttribute.Call(uintptr(handle), uintptr(attr))
 				}
 			}
 		case 'h':
+			var ci consoleCursorInfo
 			cs := buf.String()
-			if cs == "?25" {
-				var ci consoleCursorInfo
-				procGetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
+			if cs == "5>" {
+				procGetConsoleCursorInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&ci)))
+				ci.visible = 0
+				procSetConsoleCursorInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&ci)))
+			} else if cs == "?25" {
+				procGetConsoleCursorInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&ci)))
 				ci.visible = 1
-				procSetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
+				procSetConsoleCursorInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&ci)))
+			} else if cs == "?1049" {
+				if w.althandle == 0 {
+					h, _, _ := procCreateConsoleScreenBuffer.Call(uintptr(genericRead|genericWrite), 0, 0, uintptr(consoleTextmodeBuffer), 0, 0)
+					w.althandle = syscall.Handle(h)
+					if w.althandle != 0 {
+						handle = w.althandle
+					}
+				}
 			}
 		case 'l':
+			var ci consoleCursorInfo
 			cs := buf.String()
-			if cs == "?25" {
-				var ci consoleCursorInfo
-				procGetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
+			if cs == "5>" {
+				procGetConsoleCursorInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&ci)))
+				ci.visible = 1
+				procSetConsoleCursorInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&ci)))
+			} else if cs == "?25" {
+				procGetConsoleCursorInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&ci)))
 				ci.visible = 0
-				procSetConsoleCursorInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&ci)))
+				procSetConsoleCursorInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&ci)))
+			} else if cs == "?1049" {
+				if w.althandle != 0 {
+					syscall.CloseHandle(w.althandle)
+					w.althandle = 0
+					handle = w.handle
+				}
 			}
 		case 's':
-			procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+			procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
 			w.oldpos = csbi.cursorPosition
 		case 'u':
-			procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&w.oldpos)))
+			procSetConsoleCursorPosition.Call(uintptr(handle), *(*uintptr)(unsafe.Pointer(&w.oldpos)))
 		}
 	}
-	return len(data) - w.lastbuf.Len(), nil
+
+	return len(data), nil
 }
 
 type consoleColor struct {
@@ -700,22 +860,22 @@ 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 ca588c78a..9721e16f4 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/README.md b/vendor/github.com/mattn/go-isatty/README.md
index 8e4365f45..1e69004bb 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
deleted file mode 100644
index 83c588773..000000000
--- a/vendor/github.com/mattn/go-isatty/isatty_appengine.go
+++ /dev/null
@@ -1,9 +0,0 @@
-// +build appengine
-
-package isatty
-
-// IsTerminal returns true if the file descriptor is terminal which
-// is always false on on appengine classic which is a sandboxed PaaS.
-func IsTerminal(fd uintptr) bool {
-	return false
-}
diff --git a/vendor/github.com/mattn/go-isatty/isatty_bsd.go b/vendor/github.com/mattn/go-isatty/isatty_bsd.go
index 42f2514d1..07e93039d 100644
--- a/vendor/github.com/mattn/go-isatty/isatty_bsd.go
+++ b/vendor/github.com/mattn/go-isatty/isatty_bsd.go
@@ -16,3 +16,9 @@ func IsTerminal(fd uintptr) bool {
 	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
 	return err == 0
 }
+
+// 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 9d24bac1d..1f4002617 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
 
@@ -16,3 +16,9 @@ func IsTerminal(fd uintptr) bool {
 	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
 	return err == 0
 }
+
+// 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_not_windows.go b/vendor/github.com/mattn/go-isatty/isatty_not_windows.go
deleted file mode 100644
index 616832d23..000000000
--- a/vendor/github.com/mattn/go-isatty/isatty_not_windows.go
+++ /dev/null
@@ -1,9 +0,0 @@
-// +build !windows appengine
-
-package isatty
-
-// 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_solaris.go b/vendor/github.com/mattn/go-isatty/isatty_solaris.go
index 1f0c6bf53..bdd5c79a0 100644
--- a/vendor/github.com/mattn/go-isatty/isatty_solaris.go
+++ b/vendor/github.com/mattn/go-isatty/isatty_solaris.go
@@ -14,3 +14,9 @@ func IsTerminal(fd uintptr) bool {
 	err := unix.IoctlSetTermio(int(fd), unix.TCGETA, &termio)
 	return err == nil
 }
+
+// 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-runewidth/runewidth.go b/vendor/github.com/mattn/go-runewidth/runewidth.go
index 2164497ad..82568a1bb 100644
--- a/vendor/github.com/mattn/go-runewidth/runewidth.go
+++ b/vendor/github.com/mattn/go-runewidth/runewidth.go
@@ -1,13 +1,24 @@
 package runewidth
 
+import "os"
+
 var (
 	// EastAsianWidth will be set true if the current locale is CJK
-	EastAsianWidth = IsEastAsian()
+	EastAsianWidth bool
 
 	// DefaultCondition is a condition in current locale
 	DefaultCondition = &Condition{EastAsianWidth}
 )
 
+func init() {
+	env := os.Getenv("RUNEWIDTH_EASTASIAN")
+	if env == "" {
+		EastAsianWidth = IsEastAsian()
+	} else {
+		EastAsianWidth = env == "1"
+	}
+}
+
 type interval struct {
 	first rune
 	last  rune
@@ -55,6 +66,7 @@ var private = table{
 var nonprint = table{
 	{0x0000, 0x001F}, {0x007F, 0x009F}, {0x00AD, 0x00AD},
 	{0x070F, 0x070F}, {0x180B, 0x180E}, {0x200B, 0x200F},
+	{0x2028, 0x2029},
 	{0x202A, 0x202E}, {0x206A, 0x206F}, {0xD800, 0xDFFF},
 	{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFB}, {0xFFFE, 0xFFFF},
 }
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 6e5610460..1307525c3 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -268,22 +268,23 @@
 			"revisionTime": "2016-07-20T14:16:34Z"
 		},
 		{
-			"checksumSHA1": "I4njd26dG5hxFT2nawuByM4pxzY=",
+			"checksumSHA1": "SEnjvwVyfuU2xBaOfXfwPD5MZqk=",
 			"path": "github.com/mattn/go-colorable",
-			"revision": "5411d3eea5978e6cdc258b30de592b60df6aba96",
-			"revisionTime": "2017-02-10T17:28:01Z"
+			"revision": "efa589957cd060542a26d2dd7832fd6a6c6c3ade",
+			"revisionTime": "2018-03-10T13:32:14Z",
+			"version": "efa589957cd060542a26d2dd7832fd6a6c6c3ade"
 		},
 		{
-			"checksumSHA1": "EkT5JmFvz3zOPWappEFyYWUaeY0=",
+			"checksumSHA1": "GiVgQkx5acnq+JZtYiuHPlhHoso=",
 			"path": "github.com/mattn/go-isatty",
-			"revision": "281032e84ae07510239465db46bf442aa44b953a",
-			"revisionTime": "2017-02-09T17:56:15Z"
+			"revision": "3fb116b820352b7f0c281308a4d6250c22d94e27",
+			"revisionTime": "2018-08-30T10:17:45Z"
 		},
 		{
 			"checksumSHA1": "MNkKJyk2TazKMJYbal5wFHybpyA=",
 			"path": "github.com/mattn/go-runewidth",
-			"revision": "14207d285c6c197daabb5c9793d63e7af9ab2d50",
-			"revisionTime": "2017-02-01T02:35:40Z"
+			"revision": "ce7b0b5c7b45a81508558cd1dba6bb1e4ddb51bb",
+			"revisionTime": "2018-04-08T05:53:51Z"
 		},
 		{
 			"checksumSHA1": "L3leymg2RT8hFl5uL+5KP/LpBkg=",