Merge remote-tracking branch 'origin/dev' into dev

kernel/model/export.go

@@ -1525,6 +1525,25 @@ func exportMarkdownContent0(tree *parse.Tree, cloudAssetsBase string, assetsDest
 		})
 	}
 
+	// When exporting Markdown, `<br />` nodes in non-tables are replaced with `\n` text nodes https://github.com/siyuan-note/siyuan/issues/9509
+	var unlinks []*ast.Node
+	ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
+		if !entering {
+			return ast.WalkContinue
+		}
+
+		if ast.NodeBr == n.Type {
+			if !n.ParentIs(ast.NodeTableCell) {
+				n.InsertBefore(&ast.Node{Type: ast.NodeText, Tokens: []byte("\n")})
+				unlinks = append(unlinks, n)
+			}
+		}
+		return ast.WalkContinue
+	})
+	for _, unlink := range unlinks {
+		unlink.Unlink()
+	}
+
 	renderer := render.NewProtyleExportMdRenderer(tree, luteEngine.RenderOptions)
 	ret = gulu.Str.FromBytes(renderer.Render())
 	return