added linkBuilder

@@ -13,6 +13,7 @@ class GptMarkdownConfig {
     this.codeBuilder,
     this.sourceTagBuilder,
     this.highlightBuilder,
+    this.linkBuilder,
     this.maxLines,
     this.overflow,
   });
@@ -34,6 +35,7 @@ class GptMarkdownConfig {
   final int? maxLines;
   final TextOverflow? overflow;
   final Widget Function(BuildContext context, String text, TextStyle style)? highlightBuilder;
+  final Widget Function(BuildContext context, String text, String url, TextStyle style)? linkBuilder;
 
   GptMarkdownConfig copyWith({
     TextStyle? style,
@@ -54,6 +56,7 @@ class GptMarkdownConfig {
     final int? maxLines,
     final TextOverflow? overflow,
     final Widget Function(BuildContext context, String text, TextStyle style)? highlightBuilder,
+    final Widget Function(BuildContext context, String text, String url, TextStyle style)? linkBuilder,
   }) {
     return GptMarkdownConfig(
       style: style ?? this.style,
@@ -69,6 +72,7 @@ class GptMarkdownConfig {
       maxLines: maxLines ?? this.maxLines,
       overflow: overflow ?? this.overflow,
       highlightBuilder: highlightBuilder ?? this.highlightBuilder,
+      linkBuilder: linkBuilder ?? this.linkBuilder,
     );
   }
 

@@ -35,6 +35,7 @@ class GptMarkdown extends StatelessWidget {
     this.codeBuilder,
     this.sourceTagBuilder,
     this.highlightBuilder,
+    this.linkBuilder,
     this.maxLines,
     this.overflow,
   });
@@ -55,6 +56,7 @@ class GptMarkdown extends StatelessWidget {
       codeBuilder;
   final Widget Function(BuildContext, String, TextStyle)? sourceTagBuilder;
   final Widget Function(BuildContext context, String text, TextStyle style)? highlightBuilder;
+  final Widget Function(BuildContext context, String text, String url, TextStyle style)? linkBuilder;
 
   @override
   Widget build(BuildContext context) {
@@ -96,6 +98,7 @@ class GptMarkdown extends StatelessWidget {
         overflow: overflow,
         sourceTagBuilder: sourceTagBuilder,
         highlightBuilder: highlightBuilder,
+        linkBuilder: linkBuilder,
       ),
     ));
   }

@@ -733,15 +733,35 @@ class ATagMd extends InlineMd {
     if (match?[1] == null && match?[2] == null) {
       return const TextSpan();
     }
+    
+    final linkText = match?[1] ?? "";
+    final url = match?[2] ?? "";
+    
+    // Use custom builder if provided
+    if (config.linkBuilder != null) {
+      return WidgetSpan(
+        child: GestureDetector(
+          onTap: () => config.onLinkTab?.call(url, linkText),
+          child: config.linkBuilder!(
+            context,
+            linkText,
+            url,
+            config.style ?? const TextStyle(),
+          ),
+        ),
+      );
+    }
+
+    // Default rendering
     var theme = GptMarkdownTheme.of(context);
     return WidgetSpan(
       child: LinkButton(
         hoverColor: theme.linkHoverColor,
         color: theme.linkColor,
         onPressed: () {
-          config.onLinkTab?.call("${match?[2]}", "${match?[1]}");
+          config.onLinkTab?.call(url, linkText);
         },
-        text: match?[1] ?? "",
+        text: linkText,
         config: config,
       ),
     );