Split rendering of SpanKind::Tspan and SpanKind::Span

Author: GuillaumeGomez

crates/anstyle-svg/src/lib.rs

@@ -506,18 +506,40 @@ fn write_fg_span(buffer: &mut String, span: SpanKind, element: &adapter::Element
 
     let mut need_closing_a = false;
 
-    write!(buffer, r#"<{span}"#).unwrap();
-    write_classes(buffer, classes);
-    write!(buffer, r#">"#).unwrap();
-    if let Some(hyperlink) = &element.url {
-        write!(buffer, r#"<a href="{hyperlink}">"#).unwrap();
-        need_closing_a = true;
-    }
-    write!(buffer, "{fragment}").unwrap();
-    if need_closing_a {
-        write!(buffer, r#"</a>"#).unwrap();
+    match span {
+        SpanKind::Span => {
+            if classes.is_empty() && element.url.is_none() {
+                // No need to create an element if there is no class or href.
+                write!(buffer, "{fragment}").unwrap();
+            }
+            write!(buffer, r#"<span"#).unwrap();
+            write_classes(buffer, classes);
+            write!(buffer, r#">"#).unwrap();
+            if let Some(hyperlink) = &element.url {
+                write!(buffer, r#"<a href="{hyperlink}">"#).unwrap();
+                need_closing_a = true;
+            }
+            write!(buffer, "{fragment}").unwrap();
+            if need_closing_a {
+                write!(buffer, r#"</a>"#).unwrap();
+            }
+            write!(buffer, r#"</span>"#).unwrap();
+        }
+        SpanKind::Tspan => {
+            write!(buffer, r#"<tspan"#).unwrap();
+            write_classes(buffer, classes);
+            write!(buffer, r#">"#).unwrap();
+            if let Some(hyperlink) = &element.url {
+                write!(buffer, r#"<a href="{hyperlink}">"#).unwrap();
+                need_closing_a = true;
+            }
+            write!(buffer, "{fragment}").unwrap();
+            if need_closing_a {
+                write!(buffer, r#"</a>"#).unwrap();
+            }
+            write!(buffer, r#"</tspan>"#).unwrap();
+        }
     }
-    write!(buffer, r#"</{span}>"#).unwrap();
 }
 
 fn write_bg_span(buffer: &mut String, span: SpanKind, style: &anstyle::Style, fragment: &str) {