mod(node2buffer): add styling to parsed contents

src/widget/PopupMenu.zig

@@ -37,6 +37,10 @@ pub fn update(this: *@This(), event: Event) ?Event {
                 // Home
                 return .{ .path = "./doc/home.md" };
             }
+            if (key.matches('t', .{})) {
+                // test
+                return .{ .path = "./doc/test.md" };
+            }
         },
         else => {},
     }
@@ -55,6 +59,7 @@ pub fn draw(this: *@This(), win: vaxis.Window) void {
         \\
         \\**a** about
         \\**h** home
+        \\**t** test
     ;
     var zmd = Zmd.init(this.allocator);
     defer zmd.deinit();
@@ -63,7 +68,7 @@ pub fn draw(this: *@This(), win: vaxis.Window) void {
     defer cells.deinit();
 
     zmd.parse(msg) catch @panic("failed to parse markdown file");
-    node2buffer.toBuffer(zmd.nodes.items[0], this.allocator, msg, &cells, .{}) catch @panic("failed to transform to cell array");
+    node2buffer.toBuffer(zmd.nodes.items[0], this.allocator, msg, &cells, .{}, null) catch @panic("failed to transform to cell array");
 
     var col: usize = 0;
     var row: usize = 0;