bump tcell

47 files changed, 1140 insertions, 817 deletions

diff --git a/vendor/github.com/gdamore/tcell/v2/README.adoc b/vendor/github.com/gdamore/tcell/v2/README.adoc
index 15f390ff3..93af9fdcb 100644
--- a/vendor/github.com/gdamore/tcell/v2/README.adoc
+++ b/vendor/github.com/gdamore/tcell/v2/README.adoc
@@ -5,7 +5,7 @@ image:https://img.shields.io/travis/gdamore/tcell.svg?label=linux[Linux Status,l
 image:https://img.shields.io/appveyor/ci/gdamore/tcell.svg?label=windows[Windows Status,link="https://ci.appveyor.com/project/gdamore/tcell"]
 image:https://img.shields.io/badge/license-APACHE2-blue.svg[Apache License,link="https://github.com/gdamore/tcell/blob/master/LICENSE"]
 image:https://img.shields.io/badge/godoc-reference-blue.svg[GoDoc,link="https://godoc.org/github.com/gdamore/tcell"]
-image:http://goreportcard.com/badge/gdamore/tcell[Go Report Card,link="http://goreportcard.com/report/gdamore/tcell"]
+image:https://goreportcard.com/badge/gdamore/tcell[Go Report Card,link="http://goreportcard.com/report/gdamore/tcell"]
 image:https://img.shields.io/discord/639503822733180969?label=discord[Discord,link="https://discord.gg/urTTxDN"]
 image:https://codecov.io/gh/gdamore/tcell/branch/master/graph/badge.svg[codecov,link="https://codecov.io/gh/gdamore/tcell"]
 
@@ -51,6 +51,9 @@ Version 1.x remains available using the import `github.com/gdamore/tcell`.
 * https://github.com/jbaramidze/gonano[gonano] - CLI test editor
 * https://github.com/tmountain/uchess[uchess] - A UCI chess client for your terminal
 * https://github.com/a-h/min[min] - A Gemini browser
+* https://github.com/noborus/ov[ov] - Terminal pager
+* https://github.com/gcla/tmux-wormhole[tmux-wormhole] - A tmux plugin to transfer files with magic wormhole
+* https://github.com/anaseto/gruid-tcell[gruid-tcell] - A tcell driver for the grid based UI and game framework gruid.
 
 == Pure Go Terminfo Database
 
diff --git a/vendor/github.com/gdamore/tcell/v2/color.go b/vendor/github.com/gdamore/tcell/v2/color.go
index 8a13a073a..8e50fa302 100644
--- a/vendor/github.com/gdamore/tcell/v2/color.go
+++ b/vendor/github.com/gdamore/tcell/v2/color.go
@@ -14,7 +14,10 @@
 
 package tcell
 
-import "strconv"
+import (
+	ic "image/color"
+	"strconv"
+)
 
 // Color represents a color.  The low numeric values are the same as used
 // by ECMA-48, and beyond that XTerm.  A 24-bit RGB value may be used by
@@ -35,7 +38,7 @@ const (
 	// system or terminal default may exist.  It's also the zero value.
 	ColorDefault Color = 0
 
-	// ColorIsValid is used to indicate the color value is actually
+	// ColorValid is used to indicate the color value is actually
 	// valid (initialized).  This is useful to permit the zero value
 	// to be treated as the default.
 	ColorValid Color = 1 << 32
@@ -1066,4 +1069,13 @@ func GetColor(name string) Color {
 // PaletteColor creates a color based on the palette index.
 func PaletteColor(index int) Color {
 	return Color(index) | ColorValid
-}
\ No newline at end of file
+}
+
+// FromImageColor converts an image/color.Color into tcell.Color.
+// The alpha value is dropped, so it should be tracked separately if it is
+// needed.
+func FromImageColor(imageColor ic.Color) Color {
+	r, g, b, _ := imageColor.RGBA()
+	// NOTE image/color.Color RGB values range is [0, 0xFFFF] as uint32
+	return NewRGBColor(int32(r>>8), int32(g>>8), int32(b>>8))
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/console_win.go b/vendor/github.com/gdamore/tcell/v2/console_win.go
index ce2185313..7c5716039 100644
--- a/vendor/github.com/gdamore/tcell/v2/console_win.go
+++ b/vendor/github.com/gdamore/tcell/v2/console_win.go
@@ -41,6 +41,7 @@ type cScreen struct {
 	fini       bool
 	vten       bool
 	truecolor  bool
+	running    bool
 
 	w int
 	h int
@@ -265,42 +266,14 @@ func (s *cScreen) Fini() {
 	s.disengage()
 }
 
-func (s *cScreen) finish() {
-	s.Lock()
-	s.style = StyleDefault
-	s.curx = -1
-	s.cury = -1
-	s.fini = true
-	s.vten = false
-	s.Unlock()
-
-	s.setCursorInfo(&s.ocursor)
-	s.setInMode(s.oimode)
-	s.setOutMode(s.oomode)
-	s.setBufferSize(int(s.oscreen.size.x), int(s.oscreen.size.y))
-	s.clearScreen(StyleDefault, false)
-	s.setCursorPos(0, 0, false)
-	procSetConsoleTextAttribute.Call(
-		uintptr(s.out),
-		uintptr(s.mapStyle(StyleDefault)))
-
-	close(s.quit)
-	procSetEvent.Call(uintptr(s.cancelflag))
-	// Block until scanInput returns; this prevents a race condition on Win 8+
-	// which causes syscall.Close to block until another keypress is read.
-	<-s.scandone
-	syscall.Close(s.in)
-	syscall.Close(s.out)
-}
-
 func (s *cScreen) disengage() {
 	s.Lock()
-	stopQ := s.stopQ
-	if stopQ == nil {
+	if !s.running {
 		s.Unlock()
 		return
 	}
-	s.stopQ = nil
+	s.running = false
+	stopQ := s.stopQ
 	procSetEvent.Call(uintptr(s.cancelflag))
 	close(stopQ)
 	s.Unlock()
@@ -312,6 +285,7 @@ func (s *cScreen) disengage() {
 	s.setBufferSize(int(s.oscreen.size.x), int(s.oscreen.size.y))
 	s.clearScreen(StyleDefault, false)
 	s.setCursorPos(0, 0, false)
+	s.setCursorInfo(&s.ocursor)
 	procSetConsoleTextAttribute.Call(
 		uintptr(s.out),
 		uintptr(s.mapStyle(StyleDefault)))
@@ -320,7 +294,7 @@ func (s *cScreen) disengage() {
 func (s *cScreen) engage() error {
 	s.Lock()
 	defer s.Unlock()
-	if s.stopQ != nil {
+	if s.running {
 		return errors.New("already engaged")
 	}
 	s.stopQ = make(chan struct{})
@@ -332,6 +306,7 @@ func (s *cScreen) engage() error {
 	if cf == uintptr(0) {
 		return e
 	}
+	s.running = true
 	s.cancelflag = syscall.Handle(cf)
 	s.enableMouse(s.mouseEnabled)
 
@@ -370,13 +345,17 @@ func (s *cScreen) PostEvent(ev Event) error {
 
 func (s *cScreen) PollEvent() Event {
 	select {
-	case <-s.quit:
+	case <-s.stopQ:
 		return nil
 	case ev := <-s.evch:
 		return ev
 	}
 }
 
+func (s *cScreen) HasPendingEvent() bool {
+	return len(s.evch) > 0
+}
+
 type cursorInfo struct {
 	size    uint32
 	visible uint32
diff --git a/vendor/github.com/gdamore/tcell/v2/nonblock_bsd.go b/vendor/github.com/gdamore/tcell/v2/nonblock_bsd.go
index df8fc0547..ffe5caf85 100644
--- a/vendor/github.com/gdamore/tcell/v2/nonblock_bsd.go
+++ b/vendor/github.com/gdamore/tcell/v2/nonblock_bsd.go
@@ -17,7 +17,6 @@
 package tcell
 
 import (
-	"os"
 	"syscall"
 
 	"golang.org/x/sys/unix"
@@ -25,26 +24,18 @@ import (
 
 // BSD systems use TIOC style ioctls.
 
-// nonBlocking changes VMIN to 0, and VTIME to 1.  This basically ensures that
-// we can wake up the input loop.  We only want to do this if we are going to interrupt
-// that loop.  Normally we use VMIN 1 and VTIME 0, which ensures we pick up bytes when
-// they come but don't spin burning cycles.
-func (t *tScreen) nonBlocking(on bool) {
-	fd := int(os.Stdin.Fd())
+// tcSetBufParams is used by the tty driver on UNIX systems to configure the
+// buffering parameters (minimum character count and minimum wait time in msec.)
+func tcSetBufParams(fd int, vMin uint8, vTime uint8) error {
+	_ = syscall.SetNonblock(fd, true)
 	tio, err := unix.IoctlGetTermios(fd, unix.TIOCGETA)
 	if err != nil {
-		return
+		return err
 	}
-	if on {
-		tio.Cc[unix.VMIN] = 0
-		tio.Cc[unix.VTIME] = 0
-	} else {
-		// block for any output
-		tio.Cc[unix.VTIME] = 0
-		tio.Cc[unix.VMIN] = 1
+	tio.Cc[unix.VMIN] = vMin
+	tio.Cc[unix.VTIME] = vTime
+	if err = unix.IoctlSetTermios(fd, unix.TIOCSETA, tio); err != nil {
+		return err
 	}
-
-	_ = syscall.SetNonblock(fd, on)
-	// We want to set this *right now*.
-	_ = unix.IoctlSetTermios(fd, unix.TIOCSETA, tio)
+	return nil
 }
diff --git a/vendor/github.com/gdamore/tcell/v2/nonblock_stub.go b/vendor/github.com/gdamore/tcell/v2/nonblock_stub.go
deleted file mode 100644
index 35758c33e..000000000
--- a/vendor/github.com/gdamore/tcell/v2/nonblock_stub.go
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2021 The TCell Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use file except in compliance with the License.
-// You may obtain a copy of the license at
-//
-//    http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// +build plan9 windows js
-
-package tcell
-
-func (t *tScreen) nonBlocking(on bool) error {
-	return nil
-}
\ No newline at end of file
diff --git a/vendor/github.com/gdamore/tcell/v2/nonblock_unix.go b/vendor/github.com/gdamore/tcell/v2/nonblock_unix.go
index c4c374cc9..768128d7a 100644
--- a/vendor/github.com/gdamore/tcell/v2/nonblock_unix.go
+++ b/vendor/github.com/gdamore/tcell/v2/nonblock_unix.go
@@ -17,36 +17,23 @@
 package tcell
 
 import (
-	"os"
 	"syscall"
 
 	"golang.org/x/sys/unix"
 )
 
-// NB: We might someday wish to move Windows to this model.   However,
-// that would probably mean sacrificing some of the richer key reporting
-// that we can obtain with the console API present on Windows.
-
-// nonBlocking changes VMIN to 0, and VTIME to 1.  This basically ensures that
-// we can wake up the input loop.  We only want to do this if we are going to interrupt
-// that loop.  Normally we use VMIN 1 and VTIME 0, which ensures we pick up bytes when
-// they come but don't spin burning cycles.
-func (t *tScreen) nonBlocking(on bool) {
-	fd := int(os.Stdin.Fd())
+// tcSetBufParams is used by the tty driver on UNIX systems to configure the
+// buffering parameters (minimum character count and minimum wait time in msec.)
+func tcSetBufParams(fd int, vMin uint8, vTime uint8) error {
+	_ = syscall.SetNonblock(fd, true)
 	tio, err := unix.IoctlGetTermios(fd, unix.TCGETS)
 	if err != nil {
-		return
+		return err
 	}
-	if on {
-		tio.Cc[unix.VMIN] = 0
-		tio.Cc[unix.VTIME] = 0
-	} else {
-		// block for any output
-		tio.Cc[unix.VTIME] = 0
-		tio.Cc[unix.VMIN] = 1
+	tio.Cc[unix.VMIN] = vMin
+	tio.Cc[unix.VTIME] = vTime
+	if err = unix.IoctlSetTermios(fd, unix.TCSETS, tio); err != nil {
+		return err
 	}
-
-	_ = syscall.SetNonblock(fd, on)
-	// We want to set this *right now*.
-	_ = unix.IoctlSetTermios(fd, unix.TCSETS, tio)
+	return nil
 }
diff --git a/vendor/github.com/gdamore/tcell/v2/screen.go b/vendor/github.com/gdamore/tcell/v2/screen.go
index 37d7894dc..2d9a9ad98 100644
--- a/vendor/github.com/gdamore/tcell/v2/screen.go
+++ b/vendor/github.com/gdamore/tcell/v2/screen.go
@@ -83,6 +83,13 @@ type Screen interface {
 	// Furthermore, this will return nil if the Screen is finalized.
 	PollEvent() Event
 
+	// HasPendingEvent returns true if PollEvent would return an event
+	// without blocking.  If the screen is stopped and PollEvent would
+	// return nil, then the return value from this function is unspecified.
+	// The purpose of this function is to allow multiple events to be collected
+	// at once, to minimize screen redraws.
+	HasPendingEvent() bool
+
 	// PostEvent tries to post an event into the event stream.  This
 	// can fail if the event queue is full.  In that case, the event
 	// is dropped, and ErrEventQFull is returned.
@@ -112,7 +119,7 @@ type Screen interface {
 	// EnablePaste enables bracketed paste mode, if supported.
 	EnablePaste()
 
-	// DisablePaste() disables bracketed paste mode.
+	// DisablePaste disables bracketed paste mode.
 	DisablePaste()
 
 	// HasMouse returns true if the terminal (apparently) supports a
@@ -151,7 +158,7 @@ type Screen interface {
 	CharacterSet() string
 
 	// RegisterRuneFallback adds a fallback for runes that are not
-	// part of the character set -- for example one coudld register
+	// part of the character set -- for example one could register
 	// o as a fallback for ø.  This should be done cautiously for
 	// characters that might be displayed ordinarily in language
 	// specific text -- characters that could change the meaning of
@@ -162,7 +169,7 @@ type Screen interface {
 	// character set, those are used in preference.  Also, standard
 	// fallbacks for graphical characters in the ACSC terminfo string
 	// are registered implicitly.
-
+	//
 	// The display string should be the same width as original rune.
 	// This makes it possible to register two character replacements
 	// for full width East Asian characters, for example.
diff --git a/vendor/github.com/gdamore/tcell/v2/simulation.go b/vendor/github.com/gdamore/tcell/v2/simulation.go
index 7cb720cb5..468aeebf7 100644
--- a/vendor/github.com/gdamore/tcell/v2/simulation.go
+++ b/vendor/github.com/gdamore/tcell/v2/simulation.go
@@ -360,6 +360,10 @@ func (s *simscreen) PollEvent() Event {
 	}
 }
 
+func (s *simscreen) HasPendingEvent() bool {
+	return len(s.evch) > 0
+}
+
 func (s *simscreen) PostEventWait(ev Event) {
 	s.evch <- ev
 }
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/a/aixterm/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/a/aixterm/term.go
index 566df7bff..503c9199e 100644
--- a/vendor/github.com/gdamore/tcell/v2/terminfo/a/aixterm/term.go
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/a/aixterm/term.go
@@ -78,5 +78,6 @@ func init() {
 		KeyF36:       "\x1b[036q",
 		KeyClear:     "\x1b[144q",
 		KeyBacktab:   "\x1b[Z",
+		AutoMargin:   true,
 	})
 }
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/a/alacritty/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/a/alacritty/term.go
index e312fc48e..5b9799846 100644
--- a/vendor/github.com/gdamore/tcell/v2/terminfo/a/alacritty/term.go
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/a/alacritty/term.go
@@ -8,61 +8,62 @@ func init() {
 
 	// alacritty terminal emulator
 	terminfo.AddTerminfo(&terminfo.Terminfo{
-		Name:         "alacritty",
-		Columns:      80,
-		Lines:        24,
-		Colors:       256,
-		Bell:         "\a",
-		Clear:        "\x1b[H\x1b[2J",
-		EnterCA:      "\x1b[?1049h\x1b[22;0;0t",
-		ExitCA:       "\x1b[?1049l\x1b[23;0;0t",
-		ShowCursor:   "\x1b[?12l\x1b[?25h",
-		HideCursor:   "\x1b[?25l",
-		AttrOff:      "\x1b(B\x1b[m",
-		Underline:    "\x1b[4m",
-		Bold:         "\x1b[1m",
-		Dim:          "\x1b[2m",
-		Italic:       "\x1b[3m",
-		Blink:        "\x1b[5m",
-		Reverse:      "\x1b[7m",
-		EnterKeypad:  "\x1b[?1h\x1b=",
-		ExitKeypad:   "\x1b[?1l\x1b>",
-		SetFg:        "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
-		SetBg:        "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
-		SetFgBg:      "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
-		ResetFgBg:    "\x1b[39;49m",
-		AltChars:     "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
-		EnterAcs:     "\x1b(0",
-		ExitAcs:      "\x1b(B",
-		StrikeThrough:"\x1b[9m",
-		Mouse:        "\x1b[<",
-		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
-		CursorBack1:  "\b",
-		CursorUp1:    "\x1b[A",
-		KeyUp:        "\x1bOA",
-		KeyDown:      "\x1bOB",
-		KeyRight:     "\x1bOC",
-		KeyLeft:      "\x1bOD",
-		KeyInsert:    "\x1b[2~",
-		KeyDelete:    "\x1b[3~",
-		KeyBackspace: "\u007f",
-		KeyHome:      "\x1bOH",
-		KeyEnd:       "\x1bOF",
-		KeyPgUp:      "\x1b[5~",
-		KeyPgDn:      "\x1b[6~",
-		KeyF1:        "\x1bOP",
-		KeyF2:        "\x1bOQ",
-		KeyF3:        "\x1bOR",
-		KeyF4:        "\x1bOS",
-		KeyF5:        "\x1b[15~",
-		KeyF6:        "\x1b[17~",
-		KeyF7:        "\x1b[18~",
-		KeyF8:        "\x1b[19~",
-		KeyF9:        "\x1b[20~",
-		KeyF10:       "\x1b[21~",
-		KeyF11:       "\x1b[23~",
-		KeyF12:       "\x1b[24~",
-		KeyBacktab:   "\x1b[Z",
-		Modifiers:    1,
+		Name:          "alacritty",
+		Columns:       80,
+		Lines:         24,
+		Colors:        256,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h\x1b[22;0;0t",
+		ExitCA:        "\x1b[?1049l\x1b[23;0;0t",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b(B\x1b[m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:         "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:       "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[<",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
 	})
 }
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/a/ansi/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/a/ansi/term.go
index 53e4e49ea..5c572fd49 100644
--- a/vendor/github.com/gdamore/tcell/v2/terminfo/a/ansi/term.go