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fix: kitty: support faulty c0 mappings
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Some terminals such as WezTerm report incorrect press and release
sequences when "report event types" enhancement is enabled. This
patch adds support for these faulty mappings.

Related: wez/wezterm#6160
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@aymanbagabas
aymanbagabas committed Sep 19, 2024
1 parent 3274e41 commit 65b038d
Showing 1 changed file with 137 additions and 121 deletions.
258 changes: 137 additions & 121 deletions kitty.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,124 +8,140 @@ import (
)

// Kitty Clipboard Control Sequences

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var kittyKeyMap = map[int]rune{
ansi.BS: KeyBackspace,
ansi.HT: KeyTab,
ansi.CR: KeyEnter,
ansi.ESC: KeyEscape,
ansi.DEL: KeyBackspace,
var kittyKeyMap = map[int]Key{
ansi.BS: {Code: KeyBackspace},
ansi.HT: {Code: KeyTab},
ansi.CR: {Code: KeyEnter},
ansi.ESC: {Code: KeyEscape},
ansi.DEL: {Code: KeyBackspace},

57344: KeyEscape,
57345: KeyEnter,
57346: KeyTab,
57347: KeyBackspace,
57348: KeyInsert,
57349: KeyDelete,
57350: KeyLeft,
57351: KeyRight,
57352: KeyUp,
57353: KeyDown,
57354: KeyPgUp,
57355: KeyPgDown,
57356: KeyHome,
57357: KeyEnd,
57358: KeyCapsLock,
57359: KeyScrollLock,
57360: KeyNumLock,
57361: KeyPrintScreen,
57362: KeyPause,
57363: KeyMenu,
57364: KeyF1,
57365: KeyF2,
57366: KeyF3,
57367: KeyF4,
57368: KeyF5,
57369: KeyF6,
57370: KeyF7,
57371: KeyF8,
57372: KeyF9,
57373: KeyF10,
57374: KeyF11,
57375: KeyF12,
57376: KeyF13,
57377: KeyF14,
57378: KeyF15,
57379: KeyF16,
57380: KeyF17,
57381: KeyF18,
57382: KeyF19,
57383: KeyF20,
57384: KeyF21,
57385: KeyF22,
57386: KeyF23,
57387: KeyF24,
57388: KeyF25,
57389: KeyF26,
57390: KeyF27,
57391: KeyF28,
57392: KeyF29,
57393: KeyF30,
57394: KeyF31,
57395: KeyF32,
57396: KeyF33,
57397: KeyF34,
57398: KeyF35,
57399: KeyKp0,
57400: KeyKp1,
57401: KeyKp2,
57402: KeyKp3,
57403: KeyKp4,
57404: KeyKp5,
57405: KeyKp6,
57406: KeyKp7,
57407: KeyKp8,
57408: KeyKp9,
57409: KeyKpDecimal,
57410: KeyKpDivide,
57411: KeyKpMultiply,
57412: KeyKpMinus,
57413: KeyKpPlus,
57414: KeyKpEnter,
57415: KeyKpEqual,
57416: KeyKpSep,
57417: KeyKpLeft,
57418: KeyKpRight,
57419: KeyKpUp,
57420: KeyKpDown,
57421: KeyKpPgUp,
57422: KeyKpPgDown,
57423: KeyKpHome,
57424: KeyKpEnd,
57425: KeyKpInsert,
57426: KeyKpDelete,
57427: KeyKpBegin,
57428: KeyMediaPlay,
57429: KeyMediaPause,
57430: KeyMediaPlayPause,
57431: KeyMediaReverse,
57432: KeyMediaStop,
57433: KeyMediaFastForward,
57434: KeyMediaRewind,
57435: KeyMediaNext,
57436: KeyMediaPrev,
57437: KeyMediaRecord,
57438: KeyLowerVol,
57439: KeyRaiseVol,
57440: KeyMute,
57441: KeyLeftShift,
57442: KeyLeftCtrl,
57443: KeyLeftAlt,
57444: KeyLeftSuper,
57445: KeyLeftHyper,
57446: KeyLeftMeta,
57447: KeyRightShift,
57448: KeyRightCtrl,
57449: KeyRightAlt,
57450: KeyRightSuper,
57451: KeyRightHyper,
57452: KeyRightMeta,
57453: KeyIsoLevel3Shift,
57454: KeyIsoLevel5Shift,
57344: {Code: KeyEscape},
57345: {Code: KeyEnter},
57346: {Code: KeyTab},
57347: {Code: KeyBackspace},
57348: {Code: KeyInsert},
57349: {Code: KeyDelete},
57350: {Code: KeyLeft},
57351: {Code: KeyRight},
57352: {Code: KeyUp},
57353: {Code: KeyDown},
57354: {Code: KeyPgUp},
57355: {Code: KeyPgDown},
57356: {Code: KeyHome},
57357: {Code: KeyEnd},
57358: {Code: KeyCapsLock},
57359: {Code: KeyScrollLock},
57360: {Code: KeyNumLock},
57361: {Code: KeyPrintScreen},
57362: {Code: KeyPause},
57363: {Code: KeyMenu},
57364: {Code: KeyF1},
57365: {Code: KeyF2},
57366: {Code: KeyF3},
57367: {Code: KeyF4},
57368: {Code: KeyF5},
57369: {Code: KeyF6},
57370: {Code: KeyF7},
57371: {Code: KeyF8},
57372: {Code: KeyF9},
57373: {Code: KeyF10},
57374: {Code: KeyF11},
57375: {Code: KeyF12},
57376: {Code: KeyF13},
57377: {Code: KeyF14},
57378: {Code: KeyF15},
57379: {Code: KeyF16},
57380: {Code: KeyF17},
57381: {Code: KeyF18},
57382: {Code: KeyF19},
57383: {Code: KeyF20},
57384: {Code: KeyF21},
57385: {Code: KeyF22},
57386: {Code: KeyF23},
57387: {Code: KeyF24},
57388: {Code: KeyF25},
57389: {Code: KeyF26},
57390: {Code: KeyF27},
57391: {Code: KeyF28},
57392: {Code: KeyF29},
57393: {Code: KeyF30},
57394: {Code: KeyF31},
57395: {Code: KeyF32},
57396: {Code: KeyF33},
57397: {Code: KeyF34},
57398: {Code: KeyF35},
57399: {Code: KeyKp0},
57400: {Code: KeyKp1},
57401: {Code: KeyKp2},
57402: {Code: KeyKp3},
57403: {Code: KeyKp4},
57404: {Code: KeyKp5},
57405: {Code: KeyKp6},
57406: {Code: KeyKp7},
57407: {Code: KeyKp8},
57408: {Code: KeyKp9},
57409: {Code: KeyKpDecimal},
57410: {Code: KeyKpDivide},
57411: {Code: KeyKpMultiply},
57412: {Code: KeyKpMinus},
57413: {Code: KeyKpPlus},
57414: {Code: KeyKpEnter},
57415: {Code: KeyKpEqual},
57416: {Code: KeyKpSep},
57417: {Code: KeyKpLeft},
57418: {Code: KeyKpRight},
57419: {Code: KeyKpUp},
57420: {Code: KeyKpDown},
57421: {Code: KeyKpPgUp},
57422: {Code: KeyKpPgDown},
57423: {Code: KeyKpHome},
57424: {Code: KeyKpEnd},
57425: {Code: KeyKpInsert},
57426: {Code: KeyKpDelete},
57427: {Code: KeyKpBegin},
57428: {Code: KeyMediaPlay},
57429: {Code: KeyMediaPause},
57430: {Code: KeyMediaPlayPause},
57431: {Code: KeyMediaReverse},
57432: {Code: KeyMediaStop},
57433: {Code: KeyMediaFastForward},
57434: {Code: KeyMediaRewind},
57435: {Code: KeyMediaNext},
57436: {Code: KeyMediaPrev},
57437: {Code: KeyMediaRecord},
57438: {Code: KeyLowerVol},
57439: {Code: KeyRaiseVol},
57440: {Code: KeyMute},
57441: {Code: KeyLeftShift},
57442: {Code: KeyLeftCtrl},
57443: {Code: KeyLeftAlt},
57444: {Code: KeyLeftSuper},
57445: {Code: KeyLeftHyper},
57446: {Code: KeyLeftMeta},
57447: {Code: KeyRightShift},
57448: {Code: KeyRightCtrl},
57449: {Code: KeyRightAlt},
57450: {Code: KeyRightSuper},
57451: {Code: KeyRightHyper},
57452: {Code: KeyRightMeta},
57453: {Code: KeyIsoLevel3Shift},
57454: {Code: KeyIsoLevel5Shift},
}

func init() {
// These are some faulty C0 mappings some terminals such as WezTerm have
// and doesn't follow the specs.
kittyKeyMap[ansi.NUL] = Key{Code: KeySpace, Mod: ModCtrl}
for i := ansi.SOH; i <= ansi.SUB; i++ {
if _, ok := kittyKeyMap[i]; !ok {
kittyKeyMap[i] = Key{Code: rune(i + 0x60), Mod: ModCtrl}

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Magic number: 0x60, in <argument> detected (gomnd)
}
}
for i := ansi.FS; i <= ansi.US; i++ {
if _, ok := kittyKeyMap[i]; !ok {
kittyKeyMap[i] = Key{Code: rune(i + 0x40), Mod: ModCtrl}

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Magic number: 0x40, in <argument> detected (gomnd)
}
}
}

const (
Expand Down Expand Up @@ -183,13 +199,13 @@ func fromKittyMod(mod int) KeyMod {
// See https://sw.kovidgoyal.net/kitty/keyboard-protocol/
func parseKittyKeyboard(csi *ansi.CsiSequence) Msg {
var isRelease bool
key := Key{}
var key Key

if params := csi.Subparams(0); len(params) > 0 {
var foundKey bool
code := params[0]
if sym, ok := kittyKeyMap[code]; ok {
key.Code = sym
} else {
key, foundKey = kittyKeyMap[code]
if !foundKey {
r := rune(code)
if !utf8.ValidRune(r) {
r = utf8.RuneError
Expand Down

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