fix(ansi): reset transparent on override end

resolves #4280

src/ansi/ansi_writer.go

@@ -482,9 +482,6 @@ func (w *Writer) writeColorOverrides(match map[string]string, background string,
 }
 
 func (w *Writer) endColorOverride(position int) int {
-	// pop the last colors from the stack
-	defer w.current.Pop()
-
 	// make sure to reset the colors if needed
 	position += len([]rune(resetStyle.AnchorEnd)) - 1
 
@@ -493,26 +490,36 @@ func (w *Writer) endColorOverride(position int) int {
 		return position
 	}
 
-	// reset colors to previous when we have >= 2 in stack
+	// reset colors to previous when we have more than 1 in stack
 	// as soon as we have  more than 1, we can pop the last one
 	// and print the previous override as it wasn't ended yet
-	if w.current.Len() >= 2 {
+	if w.current.Len() > 1 {
 		fg := w.current.Foreground()
 		bg := w.current.Background()
 
 		w.current.Pop()
 
-		if w.current.Background() != bg {
-			w.writeEscapedAnsiString(fmt.Sprintf(colorise, w.current.Background()))
+		previousBg := w.current.Background()
+		previousFg := w.current.Foreground()
+
+		if w.transparent {
+			w.writeEscapedAnsiString(transparentEnd)
 		}
 
-		if w.current.Foreground() != fg {
-			w.writeEscapedAnsiString(fmt.Sprintf(colorise, w.current.Foreground()))
+		if previousBg != bg {
+			w.writeEscapedAnsiString(fmt.Sprintf(colorise, previousBg))
+		}
+
+		if previousFg != fg {
+			w.writeEscapedAnsiString(fmt.Sprintf(colorise, previousFg))
 		}
 
 		return position
 	}
 
+	// pop the last colors from the stack
+	defer w.current.Pop()
+
 	// do not reset when colors are identical
 	if w.current.Background() == w.background && w.current.Foreground() == w.foreground {
 		return position

src/ansi/ansi_writer_test.go

@@ -200,6 +200,12 @@ func TestWriteANSIColors(t *testing.T) {
 			Expected: "\x1b[47m\x1b[30mhello, \x1b[31mworld, \x1b[37mrabbit\x1b[31m hello\x1b[0m",
 			Colors:   &Colors{Foreground: "black", Background: "white"},
 		},
+		{
+			Case:     "Transparent override",
+			Input:    "home<transparent> / </>code<transparent> / </>src ",
+			Expected: "\x1b[47m\x1b[30mhome\x1b[0m\x1b[37;49m\x1b[7m / \x1b[27m\x1b[47m\x1b[30mcode\x1b[0m\x1b[37;49m\x1b[7m / \x1b[27m\x1b[47m\x1b[30msrc \x1b[0m",
+			Colors:   &Colors{Foreground: "black", Background: "white"},
+		},
 	}
 
 	for _, tc := range cases {