markup/goldmark: Add config options for the typographer extension

Note that the config per language part of this will be handled in #10602.

Updates #9772

markup/markup_config/config.go

@@ -62,15 +62,32 @@ func Decode(cfg config.Provider) (conf Config, err error) {
 
 func normalizeConfig(m map[string]any) {
 	v, err := maps.GetNestedParam("goldmark.parser", ".", m)
-	if err != nil {
-		return
+	if err == nil {
+		vm := maps.ToStringMap(v)
+		// Changed from a bool in 0.81.0
+		if vv, found := vm["attribute"]; found {
+			if vvb, ok := vv.(bool); ok {
+				vm["attribute"] = goldmark_config.ParserAttribute{
+					Title: vvb,
+				}
+			}
+		}
 	}
-	vm := maps.ToStringMap(v)
-	// Changed from a bool in 0.81.0
-	if vv, found := vm["attribute"]; found {
-		if vvb, ok := vv.(bool); ok {
-			vm["attribute"] = goldmark_config.ParserAttribute{
-				Title: vvb,
+
+	// Changed from a bool in 0.112.0.
+	v, err = maps.GetNestedParam("goldmark.extensions", ".", m)
+	if err == nil {
+		vm := maps.ToStringMap(v)
+		const typographerKey = "typographer"
+		if vv, found := vm[typographerKey]; found {
+			if vvb, ok := vv.(bool); ok {
+				if !vvb {
+					vm[typographerKey] = goldmark_config.Typographer{
+						Disable: true,
+					}
+				} else {
+					delete(vm, typographerKey)
+				}
 			}
 		}
 	}

markup/markup_config/config_test.go

@@ -52,4 +52,38 @@ func TestConfig(t *testing.T) {
 		c.Assert(conf.AsciidocExt.Extensions[0], qt.Equals, "asciidoctor-html5s")
 	})
 
+	c.Run("Decode legacy typographer", func(c *qt.C) {
+		c.Parallel()
+		v := config.New()
+
+		// typographer was changed from a bool to a struct in 0.112.0.
+		v.Set("markup", map[string]any{
+			"goldmark": map[string]any{
+				"extensions": map[string]any{
+					"typographer": false,
+				},
+			},
+		})
+
+		conf, err := Decode(v)
+
+		c.Assert(err, qt.IsNil)
+		c.Assert(conf.Goldmark.Extensions.Typographer.Disable, qt.Equals, true)
+
+		v.Set("markup", map[string]any{
+			"goldmark": map[string]any{
+				"extensions": map[string]any{
+					"typographer": true,
+				},
+			},
+		})
+
+		conf, err = Decode(v)
+
+		c.Assert(err, qt.IsNil)
+		c.Assert(conf.Goldmark.Extensions.Typographer.Disable, qt.Equals, false)
+		c.Assert(conf.Goldmark.Extensions.Typographer.Ellipsis, qt.Equals, "…")
+
+	})
+
 }