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(v2) fix: make grapheme clustering opt-in #1194

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Oct 23, 2024
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(v2) fix: make grapheme clustering opt-in #1194

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2 changes: 1 addition & 1 deletion examples/simple/testdata/TestApp.golden
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
[?25l[?2004h[?2027h[?2027$pHi. This program will exit in 10 seconds.
[?25l[?2004hHi. This program will exit in 10 seconds.

To quit sooner press ctrl-c, or press ctrl-z to suspend...
Hi. This program will exit in 9 seconds.
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6 changes: 3 additions & 3 deletions options.go
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Original file line number Diff line number Diff line change
Expand Up @@ -254,7 +254,7 @@ func WithKeyboardEnhancements(enhancements ...KeyboardEnhancement) ProgramOption
}
}

// WithoutGraphemeClustering disables grapheme clustering. This is useful if you
// WithGraphemeClustering disables grapheme clustering. This is useful if you
// want to disable grapheme clustering for your program.
//
// Grapheme clustering is a character width calculation method that accurately
Expand All @@ -263,8 +263,8 @@ func WithKeyboardEnhancements(enhancements ...KeyboardEnhancement) ProgramOption
// characters.
//
// See https://mitchellh.com/writing/grapheme-clusters-in-terminals
func WithoutGraphemeClustering() ProgramOption {
func WithGraphemeClustering() ProgramOption {
return func(p *Program) {
p.startupOptions |= withoutGraphemeClustering
p.startupOptions |= withGraphemeClustering
}
}
33 changes: 19 additions & 14 deletions screen_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,62 +17,67 @@ func TestClearMsg(t *testing.T) {
{
name: "clear_screen",
cmds: []Cmd{ClearScreen},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[2J\x1b[1;1H\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\x1b[2J\x1b[1;1H\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
},
{
name: "altscreen",
cmds: []Cmd{EnterAltScreen, ExitAltScreen},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[?1049h\x1b[2J\x1b[1;1H\x1b[?25l\x1b[?1049l\x1b[?25l\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\x1b[?1049h\x1b[2J\x1b[1;1H\x1b[?25l\x1b[?1049l\x1b[?25l\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
},
{
name: "altscreen_autoexit",
cmds: []Cmd{EnterAltScreen},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[?1049h\x1b[2J\x1b[1;1H\x1b[?25l\rsuccess\r\n\x1b[2;0H\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[?1049l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\x1b[?1049h\x1b[2J\x1b[1;1H\x1b[?25l\rsuccess\r\n\x1b[2;0H\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[?1049l\x1b[?25h",
},
{
name: "mouse_cellmotion",
cmds: []Cmd{EnableMouseCellMotion},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[?1002h\x1b[?1006h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[?1002l\x1b[?1003l\x1b[?1006l",
expected: "\x1b[?25l\x1b[?2004h\x1b[?1002h\x1b[?1006h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[?1002l\x1b[?1003l\x1b[?1006l",
},
{
name: "mouse_allmotion",
cmds: []Cmd{EnableMouseAllMotion},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[?1003h\x1b[?1006h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[?1002l\x1b[?1003l\x1b[?1006l",
expected: "\x1b[?25l\x1b[?2004h\x1b[?1003h\x1b[?1006h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[?1002l\x1b[?1003l\x1b[?1006l",
},
{
name: "mouse_disable",
cmds: []Cmd{EnableMouseAllMotion, DisableMouse},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[?1003h\x1b[?1006h\x1b[?1002l\x1b[?1003l\x1b[?1006l\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\x1b[?1003h\x1b[?1006h\x1b[?1002l\x1b[?1003l\x1b[?1006l\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
},
{
name: "cursor_hide",
cmds: []Cmd{HideCursor},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
},
{
name: "cursor_hideshow",
cmds: []Cmd{HideCursor, ShowCursor},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[?25h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l",
expected: "\x1b[?25l\x1b[?2004h\x1b[?25h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l",
},
{
name: "bp_stop_start",
cmds: []Cmd{DisableBracketedPaste, EnableBracketedPaste},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[?2004l\x1b[?2004h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\x1b[?2004l\x1b[?2004h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
},
{
name: "read_set_clipboard",
cmds: []Cmd{ReadClipboard, SetClipboard("success")},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b]52;c;?\a\x1b]52;c;c3VjY2Vzcw==\a\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\x1b]52;c;?\a\x1b]52;c;c3VjY2Vzcw==\a\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
},
{
name: "bg_fg_cur_color",
cmds: []Cmd{ForegroundColor, BackgroundColor, CursorColor},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b]10;?\a\x1b]11;?\a\x1b]12;?\a\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\x1b]10;?\a\x1b]11;?\a\x1b]12;?\a\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
},
{
name: "bg_set_color",
cmds: []Cmd{SetBackgroundColor(color.RGBA{255, 255, 255, 255})},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b]11;#ffffff\a\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b]111\a",
expected: "\x1b[?25l\x1b[?2004h\x1b]11;#ffffff\a\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b]111\a",
},
{
name: "grapheme_clustering",
cmds: []Cmd{EnableGraphemeClustering},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[?2027l",
},
}

Expand All @@ -81,13 +86,13 @@ func TestClearMsg(t *testing.T) {
tests = append(tests, test{
name: "kitty_start",
cmds: []Cmd{DisableKeyboardEnhancements, EnableKeyboardEnhancements(WithKeyReleases)},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
expected: "\x1b[?25l\x1b[?2004h\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h",
})
} else {
tests = append(tests, test{
name: "kitty_start",
cmds: []Cmd{DisableKeyboardEnhancements, EnableKeyboardEnhancements(WithKeyReleases)},
expected: "\x1b[?25l\x1b[?2004h\x1b[?2027h\x1b[?2027$p\x1b[>4;1m\x1b[>3u\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[>4;0m\x1b[>0u",
expected: "\x1b[?25l\x1b[?2004h\x1b[>4;1m\x1b[>3u\rsuccess\r\n\x1b[D\x1b[2K\r\x1b[?2004l\x1b[?25h\x1b[>4;0m\x1b[>0u",
})
}

Expand Down
4 changes: 2 additions & 2 deletions tea.go
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Original file line number Diff line number Diff line change
Expand Up @@ -103,7 +103,7 @@ const (
withoutBracketedPaste
withReportFocus
withKeyboardEnhancements
withoutGraphemeClustering
withGraphemeClustering
)

// channelHandlers manages the series of channels returned by various processes.
Expand Down Expand Up @@ -733,7 +733,7 @@ func (p *Program) Run() (Model, error) {
p.execute(ansi.EnableBracketedPaste)
p.modes[ansi.BracketedPasteMode] = true
}
if p.startupOptions&withoutGraphemeClustering == 0 {
if p.startupOptions&withGraphemeClustering != 0 {
p.execute(ansi.EnableGraphemeClustering)
p.execute(ansi.RequestGraphemeClustering)
// We store the state of grapheme clustering after we query it and get
Expand Down
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