update tcell to v2 and enable TrueColor support

Also update to the tcell v2 PaletteColor api, which should keep the chosen
theme of the user intact.

Note, that if $TRUECOLOR is defined and a truecolor given, aerc will now stop
clipping the value to one of the theme colors.
Generally this is desired behaviour though.

31 files changed, 36 insertions, 41 deletions

diff --git a/commands/util.go b/commands/util.go
index fdf20bda..b1872bc7 100644
--- a/commands/util.go
+++ b/commands/util.go
@@ -13,7 +13,7 @@ import (
 	"git.sr.ht/~sircmpwn/aerc/lib"
 	"git.sr.ht/~sircmpwn/aerc/models"
 	"git.sr.ht/~sircmpwn/aerc/widgets"
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/mitchellh/go-homedir"
 )
 
diff --git a/config/bindings.go b/config/bindings.go
index a19d4f35..9956b41e 100644
--- a/config/bindings.go
+++ b/config/bindings.go
@@ -7,7 +7,7 @@ import (
 	"io"
 	"strings"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 )
 
 type KeyStroke struct {
diff --git a/config/bindings_test.go b/config/bindings_test.go
index 1d1cbfe2..44597362 100644
--- a/config/bindings_test.go
+++ b/config/bindings_test.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/config/config.go b/config/config.go
index 51982d26..e6461338 100644
--- a/config/config.go
+++ b/config/config.go
@@ -14,7 +14,7 @@ import (
 	"time"
 	"unicode"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/go-ini/ini"
 	"github.com/imdario/mergo"
 	"github.com/kyoh86/xdg"
diff --git a/config/style.go b/config/style.go
index af7241de..c3e85032 100644
--- a/config/style.go
+++ b/config/style.go
@@ -8,7 +8,7 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/go-ini/ini"
 	"github.com/mitchellh/go-homedir"
 )
diff --git a/go.mod b/go.mod
index 9e324bd6..44030e12 100644
--- a/go.mod
+++ b/go.mod
@@ -16,14 +16,13 @@ require (
 	github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21
 	github.com/emersion/go-smtp v0.12.1
 	github.com/fsnotify/fsnotify v1.4.7
-	github.com/gdamore/tcell v1.3.0
+	github.com/gdamore/tcell/v2 v2.0.0
 	github.com/go-ini/ini v1.52.0
 	github.com/golang/protobuf v1.3.4 // indirect
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510
 	github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c // indirect
 	github.com/imdario/mergo v0.3.8
 	github.com/kyoh86/xdg v1.2.0
-	github.com/lucasb-eyer/go-colorful v1.0.3 // indirect
 	github.com/mattn/go-isatty v0.0.12
 	github.com/mattn/go-pointer v0.0.0-20190911064623-a0a44394634f // indirect
 	github.com/mattn/go-runewidth v0.0.8
@@ -46,6 +45,4 @@ require (
 
 replace golang.org/x/crypto => github.com/ProtonMail/crypto v0.0.0-20200420072808-71bec3603bf3
 
-replace github.com/gdamore/tcell => git.sr.ht/~sircmpwn/tcell v0.0.0-20190807054800-3fdb6bc01a50
-
 replace github.com/zenhack/go.notmuch => github.com/brunnre8/go.notmuch v0.0.0-20201126061756-caa2daf7093c
diff --git a/go.sum b/go.sum
index 134b35b9..83b19aec 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,6 @@
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 git.sr.ht/~sircmpwn/getopt v0.0.0-20190808004552-daaf1274538b h1:da5JBQ6dcW14aWnEf/pFRIMV2PsqTQEWmR+V2sw5oxU=
 git.sr.ht/~sircmpwn/getopt v0.0.0-20190808004552-daaf1274538b/go.mod h1:wMEGFFFNuPos7vHmWXfszqImLppbc0wEhh6JBfJIUgw=
-git.sr.ht/~sircmpwn/tcell v0.0.0-20190807054800-3fdb6bc01a50 h1:GEZXdK3vfsEGlRwlybiAvOnYLA4YKaVWxAQSn/BSkNw=
-git.sr.ht/~sircmpwn/tcell v0.0.0-20190807054800-3fdb6bc01a50/go.mod h1:Hjvr+Ofd+gLglo7RYKxxnzCBmev3BzsS67MebKS4zMM=
-github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/ProtonMail/crypto v0.0.0-20200420072808-71bec3603bf3 h1:JW27/kGLQzeM1Fxg5YQhdkTEAU7HIAHMgSag35zVTnY=
 github.com/ProtonMail/crypto v0.0.0-20200420072808-71bec3603bf3/go.mod h1:Pxr7w4gA2ikI4sWyYwEffm+oew1WAJHzG1SiDpQMkrI=
 github.com/brunnre8/go.notmuch v0.0.0-20201126061756-caa2daf7093c h1:dh58QrW3/S/aCnQPFoeRRE9zMauKooDFd5zh1dLtxXs=
@@ -48,6 +45,8 @@ github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
+github.com/gdamore/tcell/v2 v2.0.0 h1:GRWG8aLfWAlekj9Q6W29bVvkHENc6hp79XOqG4AWDOs=
+github.com/gdamore/tcell/v2 v2.0.0/go.mod h1:vSVL/GV5mCSlPC6thFP5kfOFdM9MGZcalipmpTxTgQA=
 github.com/go-ini/ini v1.52.0 h1:3UeUAveYUTCYV/G0jNDiIrrtIeAl1oAjshYyU2PaAlQ=
 github.com/go-ini/ini v1.52.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
@@ -65,7 +64,6 @@ github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/kyoh86/xdg v1.2.0 h1:CERuT/ShdTDj+A2UaX3hQ3mOV369+Sj+wyn2nIRIIkI=
 github.com/kyoh86/xdg v1.2.0/go.mod h1:/mg8zwu1+qe76oTFUBnyS7rJzk7LLC0VGEzJyJ19DHs=
-github.com/lucasb-eyer/go-colorful v1.0.2/go.mod h1:0MS4r+7BZKSJ5mw4/S5MPN+qHFF1fYclkSPilDOKW0s=
 github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tWFlaaUAac=
 github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/martinlindhe/base36 v0.0.0-20190418230009-7c6542dfbb41/go.mod h1:+AtEs8xrBpCeYgSLoY/aJ6Wf37jtBuR0s35750M27+8=
@@ -78,7 +76,7 @@ github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Ky
 github.com/mattn/go-pointer v0.0.0-20180825124634-49522c3f3791/go.mod h1:2zXcozF6qYGgmsG+SeTZz3oAbFLdD3OWqnUbNvJZAlc=
 github.com/mattn/go-pointer v0.0.0-20190911064623-a0a44394634f h1:QTRRO+ozoYgT3CQRIzNVYJRU3DB8HRnkZv6mr4ISmMA=
 github.com/mattn/go-pointer v0.0.0-20190911064623-a0a44394634f/go.mod h1:2zXcozF6qYGgmsG+SeTZz3oAbFLdD3OWqnUbNvJZAlc=
-github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
+github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-runewidth v0.0.8 h1:3tS41NlGYSmhhe/8fhGRzc+z3AYCw1Fe1WAyLuujKs0=
 github.com/mattn/go-runewidth v0.0.8/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/miolini/datacounter v1.0.2 h1:mGTL0vqEAtH7mwNJS1JIpd6jwTAP6cBQQ2P8apaCIm8=
diff --git a/lib/ui/borders.go b/lib/ui/borders.go
index 99d6880d..fd49e7fe 100644
--- a/lib/ui/borders.go
+++ b/lib/ui/borders.go
@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
 )
diff --git a/lib/ui/context.go b/lib/ui/context.go
index 6bdf76ae..7936f359 100644
--- a/lib/ui/context.go
+++ b/lib/ui/context.go
@@ -3,8 +3,8 @@ package ui
 import (
 	"fmt"
 
-	"github.com/gdamore/tcell"
-	"github.com/gdamore/tcell/views"
+	"github.com/gdamore/tcell/v2"
+	"github.com/gdamore/tcell/v2/views"
 	"github.com/mattn/go-runewidth"
 )
 
diff --git a/lib/ui/fill.go b/lib/ui/fill.go
index 4d364787..0ab4f74b 100644
--- a/lib/ui/fill.go
+++ b/lib/ui/fill.go
@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 )
 
 type Fill rune
diff --git a/lib/ui/grid.go b/lib/ui/grid.go
index cff55777..f505ce02 100644
--- a/lib/ui/grid.go
+++ b/lib/ui/grid.go
@@ -6,7 +6,7 @@ import (
 	"sync"
 	"sync/atomic"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 )
 
 type Grid struct {
diff --git a/lib/ui/interfaces.go b/lib/ui/interfaces.go
index 1f2f2849..7e117256 100644
--- a/lib/ui/interfaces.go
+++ b/lib/ui/interfaces.go
@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 )
 
 // Drawable is a UI component that can draw. Unless specified, all methods must
diff --git a/lib/ui/popover.go b/lib/ui/popover.go
index a76f2225..7a539de1 100644
--- a/lib/ui/popover.go
+++ b/lib/ui/popover.go
@@ -1,6 +1,6 @@
 package ui
 
-import "github.com/gdamore/tcell"
+import "github.com/gdamore/tcell/v2"
 
 type Popover struct {
 	x, y, width, height int
diff --git a/lib/ui/stack.go b/lib/ui/stack.go
index c9004a0d..53714084 100644
--- a/lib/ui/stack.go
+++ b/lib/ui/stack.go
@@ -5,7 +5,7 @@ import (
 
 	"git.sr.ht/~sircmpwn/aerc/config"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 )
 
 type Stack struct {
diff --git a/lib/ui/tab.go b/lib/ui/tab.go
index cd5f4485..2cd8828a 100644
--- a/lib/ui/tab.go
+++ b/lib/ui/tab.go
@@ -3,7 +3,7 @@ package ui
 import (
 	"io"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/mattn/go-runewidth"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
diff --git a/lib/ui/text.go b/lib/ui/text.go
index 455c2eb6..ffae1938 100644
--- a/lib/ui/text.go
+++ b/lib/ui/text.go
@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/mattn/go-runewidth"
 )
 
diff --git a/lib/ui/textinput.go b/lib/ui/textinput.go
index 24450658..e96499a9 100644
--- a/lib/ui/textinput.go
+++ b/lib/ui/textinput.go
@@ -4,7 +4,7 @@ import (
 	"math"
 	"time"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/mattn/go-runewidth"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
diff --git a/lib/ui/ui.go b/lib/ui/ui.go
index ee71f8ec..66c2a054 100644
--- a/lib/ui/ui.go
+++ b/lib/ui/ui.go
@@ -3,7 +3,7 @@ package ui
 import (
 	"sync/atomic"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 )
 
 type UI struct {
diff --git a/widgets/account-wizard.go b/widgets/account-wizard.go
index f47e97e1..71ba6e16 100644
--- a/widgets/account-wizard.go
+++ b/widgets/account-wizard.go
@@ -11,7 +11,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/go-ini/ini"
 	"github.com/kyoh86/xdg"
 
diff --git a/widgets/account.go b/widgets/account.go
index f2795133..fc746a48 100644
--- a/widgets/account.go
+++ b/widgets/account.go
@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"log"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
 	"git.sr.ht/~sircmpwn/aerc/lib"
diff --git a/widgets/aerc.go b/widgets/aerc.go
index b5e8dd13..70bee7c6 100644
--- a/widgets/aerc.go
+++ b/widgets/aerc.go
@@ -10,7 +10,7 @@ import (
 	"time"
 
 	"github.com/emersion/go-message/mail"
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/google/shlex"
 	"golang.org/x/crypto/openpgp"
 
diff --git a/widgets/compose.go b/widgets/compose.go
index e139f9ac..aab33088 100644
--- a/widgets/compose.go
+++ b/widgets/compose.go
@@ -16,7 +16,7 @@ import (
 	"time"
 
 	"github.com/emersion/go-message/mail"
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/mattn/go-runewidth"
 	"github.com/mitchellh/go-homedir"
 	"github.com/pkg/errors"
diff --git a/widgets/dirlist.go b/widgets/dirlist.go
index aca14914..5711fe40 100644
--- a/widgets/dirlist.go
+++ b/widgets/dirlist.go
@@ -7,7 +7,7 @@ import (
 	"regexp"
 	"sort"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/mattn/go-runewidth"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
diff --git a/widgets/exline.go b/widgets/exline.go
index 692c8e21..24c39c10 100644
--- a/widgets/exline.go
+++ b/widgets/exline.go
@@ -1,7 +1,7 @@
 package widgets
 
 import (
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
 	"git.sr.ht/~sircmpwn/aerc/lib"
diff --git a/widgets/getpasswd.go b/widgets/getpasswd.go
index 3cdc5cfe..b5c3d0ec 100644
--- a/widgets/getpasswd.go
+++ b/widgets/getpasswd.go
@@ -3,7 +3,7 @@ package widgets
 import (
 	"fmt"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
 	"git.sr.ht/~sircmpwn/aerc/lib/ui"
diff --git a/widgets/msglist.go b/widgets/msglist.go
index 61738a89..827282b3 100644
--- a/widgets/msglist.go
+++ b/widgets/msglist.go
@@ -5,7 +5,7 @@ import (
 	"log"
 	"math"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/mattn/go-runewidth"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
diff --git a/widgets/msgviewer.go b/widgets/msgviewer.go
index 6c695771..216a8c5e 100644
--- a/widgets/msgviewer.go
+++ b/widgets/msgviewer.go
@@ -11,7 +11,7 @@ import (
 	"strings"
 
 	"github.com/danwakefield/fnmatch"
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/google/shlex"
 	"github.com/mattn/go-runewidth"
 
diff --git a/widgets/selector.go b/widgets/selector.go
index d19d38f6..196601bf 100644
--- a/widgets/selector.go
+++ b/widgets/selector.go
@@ -1,7 +1,7 @@
 package widgets
 
 import (
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
 	"git.sr.ht/~sircmpwn/aerc/lib/ui"
diff --git a/widgets/spinner.go b/widgets/spinner.go
index 0c724221..f49256aa 100644
--- a/widgets/spinner.go
+++ b/widgets/spinner.go
@@ -5,7 +5,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
 	"git.sr.ht/~sircmpwn/aerc/lib/ui"
diff --git a/widgets/status.go b/widgets/status.go
index 122ca5f1..dfad08ca 100644
--- a/widgets/status.go
+++ b/widgets/status.go
@@ -3,7 +3,7 @@ package widgets
 import (
 	"time"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/mattn/go-runewidth"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
diff --git a/widgets/terminal.go b/widgets/terminal.go
index 77da71e6..e83c812f 100644
--- a/widgets/terminal.go
+++ b/widgets/terminal.go
@@ -10,7 +10,7 @@ import (
 
 	"github.com/creack/pty"
 	"github.com/ddevault/go-libvterm"
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 )
 
 type vtermKey struct {
@@ -406,7 +406,7 @@ func (term *Terminal) styleFromCell(cell *vterm.ScreenCell) tcell.Style {
 	if background.IsDefaultBg() {
 		bg = tcell.ColorDefault
 	} else if background.IsIndexed() {
-		bg = tcell.Color(background.GetIndex())
+		bg = tcell.Color(tcell.PaletteColor(int(background.GetIndex())))
 	} else if background.IsRgb() {
 		r, g, b := background.GetRGB()
 		bg = tcell.NewRGBColor(int32(r), int32(g), int32(b))
@@ -414,7 +414,7 @@ func (term *Terminal) styleFromCell(cell *vterm.ScreenCell) tcell.Style {
 	if foreground.IsDefaultFg() {
 		fg = tcell.ColorDefault
 	} else if foreground.IsIndexed() {
-		fg = tcell.Color(foreground.GetIndex())
+		fg = tcell.Color(tcell.PaletteColor(int(foreground.GetIndex())))
 	} else if foreground.IsRgb() {
 		r, g, b := foreground.GetRGB()
 		fg = tcell.NewRGBColor(int32(r), int32(g), int32(b))