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Support SGR codes 90-97, bright colors

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We just treat them as their plain counterparts.

After testing vs less and cat on iTerm2 3.3.9 / macOS Catalina 10.15.4
that's how they seem to handle this. Counter examples welcome.

Fixes #24
This commit is contained in:
Johan Walles 2020-04-22 21:37:52 +02:00
parent 46881e4519
commit a9ee2fae9d
2 changed files with 43 additions and 0 deletions
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26
m/ansiTokenizer.go
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@ -352,6 +352,32 @@ func _UpdateStyle(style tcell.Style, escapeSequence string) tcell.Style {
case "49":
style = style.Background(tcell.ColorDefault)
// Bright foreground colors. Treat them as their plain counterparts.
//
// After testing vs less and cat on iTerm2 3.3.9 / macOS Catalina
// 10.15.4 that's how they seem to handle this.
//
// Counter examples welcome.
//
// Wikipedia indicates we should maybe use bold as well for these:
// https://en.wikipedia.org/wiki/ANSI_escape_code#3/4_bit
case "90":
style = style.Foreground(0)
case "91":
style = style.Foreground(1)
case "92":
style = style.Foreground(2)
case "93":
style = style.Foreground(3)
case "94":
style = style.Foreground(4)
case "95":
style = style.Foreground(5)
case "96":
style = style.Foreground(6)
case "97":
style = style.Foreground(7)
default:
log.Warnf("Unrecognized ANSI SGR code <%s>", number)
}

17
sample-files/normal-and-bright-colors.txt Normal file
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@ -0,0 +1,17 @@
Black
Red
Green
Yellow
Blue
Magenta
Cyan
White
Bright Black
Bright Red
Bright Green
Bright Yellow
Bright Blue
Bright Magenta
Bright Cyan
Bright White