fix: remove style NoBold and add Unknown to handleSgr

Fixes: #43

Author: aymanbagabas

main_test.go

@@ -180,7 +180,7 @@ var sgr = map[string]string{
 	"style 4":                      new(ansi.Style).BackgroundColor(ansi.BrightYellow).ForegroundColor(ansi.Black).UnderlineColor(ansi.BrightCyan).String(),
 	"style 5":                      new(ansi.Style).BackgroundColor(ansi.TrueColor(0xffeeaa)).ForegroundColor(ansi.TrueColor(0xffeeaa)).UnderlineColor(ansi.TrueColor(0xffeeaa)).String(),
 	"style 6":                      new(ansi.Style).BackgroundColor(ansi.ExtendedColor(255)).ForegroundColor(ansi.ExtendedColor(255)).UnderlineColor(ansi.ExtendedColor(255)).String(),
-	"style 7":                      new(ansi.Style).NoUnderline().NoBold().NoItalic().NormalIntensity().NoBlink().NoConceal().NoReverse().NoStrikethrough().String(),
+	"style 7":                      new(ansi.Style).NoUnderline().NoItalic().NormalIntensity().NoBlink().NoConceal().NoReverse().NoStrikethrough().String(),
 	"style 8":                      new(ansi.Style).UnderlineStyle(ansi.NoUnderlineStyle).DefaultBackgroundColor().String(),
 	"style 9":                      strings.Replace(new(ansi.Style).UnderlineStyle(ansi.SingleUnderlineStyle).DefaultForegroundColor().String(), "[4", "[4:1", 1),
 	"style 10":                     new(ansi.Style).UnderlineStyle(ansi.DoubleUnderlineStyle).String(),

sgr.go

@@ -64,8 +64,6 @@ func handleSgr(p *ansi.Parser) (string, error) { //nolint:unparam
 			str += "Invisible"
 		case 9:
 			str += "Crossed-out"
-		case 21:
-			str += "No bold"
 		case 22:
 			str += "Normal intensity"
 		case 23:
@@ -103,6 +101,8 @@ func handleSgr(p *ansi.Parser) (string, error) { //nolint:unparam
 			str += fmt.Sprintf("ANSI foreground color: Bright %s", basicColors[param.Param(0)-90])
 		case 100, 101, 102, 103, 104, 105, 106, 107:
 			str += fmt.Sprintf("ANSI background color: Bright %s", basicColors[param.Param(0)-100])
+		default:
+			str += "Unknown"
 		}
 	}
 

testdata/TestSequences/sgr/style_7.golden

@@ -1 +1 @@
- CSI 24;21;23;22;25;28;27;29m: No underline, No bold, No italic, Normal intensity, No blink, No conceal, No reverse, No crossed-out
+ CSI 24;23;22;25;28;27;29m: No underline, No italic, Normal intensity, No blink, No conceal, No reverse, No crossed-out