Support dimmed text

ansidecoder/ansidecoder.go

@@ -32,6 +32,7 @@ func (cr codeRange) Is(c int) bool {
 
 var sgrReset = codeRange{0, 0}
 var sgrIncreaseIntensity = codeRange{1, 1}
+var sgrDim = codeRange{2, 2}
 var sgrNormal = codeRange{22, 22}
 var sgrForeground = codeRange{30, 37}
 var sgrForegroundBright = codeRange{90, 97}
@@ -78,6 +79,7 @@ type Decoder struct {
 	Background    Color
 	Underline     bool
 	Intensity     bool
+	Dim           bool
 	Invert        bool
 	Italic        bool
 	Strikethrough bool
@@ -218,13 +220,17 @@ func (d *Decoder) ReadRune() (r rune, size int, err error) {
 							d.Background = Color{N: -1}
 							d.Underline = false
 							d.Intensity = false
+							d.Dim = false
 							d.Invert = false
 							d.Italic = false
 							d.Strikethrough = false
 						case sgrIncreaseIntensity.Is(n):
 							d.Intensity = true
 						case sgrNormal.Is(n):
 							d.Intensity = false
+							d.Dim = false
+						case sgrDim.Is(n):
+							d.Dim = true
 						case sgrForeground.Is(n):
 							d.Foreground = Color{N: n - 30}
 						case sgrForegroundBright.Is(n):

ansitosvg/ansisvg.go

@@ -74,6 +74,7 @@ func Convert(r io.Reader, w io.Writer, opts Options) error {
 				Background:    ad.Background.String(),
 				Underline:     ad.Underline,
 				Intensity:     ad.Intensity,
+				Dim:           ad.Dim,
 				Invert:        ad.Invert,
 				Italic:        ad.Italic,
 				Strikethrough: ad.Strikethrough,

cli/testdata/dim_bightblack.ansi

@@ -0,0 +1 @@
+hello dim brightblack

cli/testdata/dim_intense_background_invert.ansi

@@ -0,0 +1 @@
+hello dim intense background inverted world

cli/testdata/dim_uv.ansi

@@ -0,0 +1,2 @@
+Using Python 3.11.10 environment at: env3.11
+Audited 1 package in 2ms

svgscreen/svgscreen.go

@@ -5,11 +5,12 @@ import (
 	_ "embed"
 	"encoding/base64"
 	"fmt"
-	"github.com/wader/ansisvg/svgscreen/xydim"
 	"html/template"
 	"io"
 	"strconv"
 	"strings"
+
+	"github.com/wader/ansisvg/svgscreen/xydim"
 )
 
 //go:embed template.svg
@@ -22,6 +23,7 @@ type Char struct {
 	Background    string
 	Underline     bool
 	Intensity     bool
+	Dim           bool
 	Invert        bool
 	Italic        bool
 	Strikethrough bool
@@ -69,6 +71,7 @@ type SvgDom struct {
 		Italic        bool
 		Underline     bool
 		Strikethrough bool
+		Dim           bool
 	}
 }
 
@@ -148,6 +151,10 @@ func (s *Screen) charToFgText(c Char) textSpan {
 		classes = append(classes, "bold")
 		s.Dom.ClassesUsed.Bold = true
 	}
+	if c.Dim {
+		classes = append(classes, "dim")
+		s.Dom.ClassesUsed.Dim = true
+	}
 	if c.Italic {
 		classes = append(classes, "italic")
 		s.Dom.ClassesUsed.Italic = true