rightDelim: t.rightDelim,
	}
}

// AddParseTree associates the argument parse tree with the template t, giving
// it the specified name. If the template has not been defined, this tree becomes
// its definition. If it has been defined and already has that name, the existing
// definition is replaced; otherwise a new template is created, defined, and returned.
func (t *Template) AddParseTree(name string, tree *parse.Tree) (*Template, error) {

	}

	// Define a named template with specified contents.
	def := func(name, contents string) {
		sub := template.New(name)
		template.Must(sub.Parse(contents))
		template.Must(templates.AddParseTree(name, sub.Tree))
	}

	// Embedded files.
	def("css", loadCSS("html/common.css"))
	def("header", loadFile("html/header.html"))
	def("graph", loadFile("html/graph.html"))
	def("graph_css", loadCSS("html/graph.css"))

			tmpl = t.new(name)
		}
		tmpl.text = v
		tmpl.Tree = v.Tree
	}
	return t, nil
}

// AddParseTree creates a new template with the name and parse tree
// and associates it with t.
//
// It returns an error if t or any associated template has already been executed.
func (t *Template) AddParseTree(name string, tree *parse.Tree) (*Template, error) {
	if err := t.checkCanParse(); err != nil {
		return nil, err
	}

necessary to have a template addressable from multiple associations, the
template definition must be parsed multiple times to create distinct *Template
values, or must be copied with [Template.Clone] or [Template.AddParseTree].

Parse may be called multiple times to assemble the various associated templates;
see [ParseFiles], [ParseGlob], [Template.ParseFiles] and [Template.ParseGlob]
for simple ways to parse related templates stored in files.

	}
	// Add a non-empty template to check that the error is helpful.
	tests, err := New("").Parse(testTemplates)
	if err != nil {
		t.Fatal(err)
	}
	tmpl.AddParseTree("secondary", tests.Tree)
	err = tmpl.Execute(&b, 0)
	if err == nil {
		t.Fatal("expected second error")
	}
	got = err.Error()
	want = `template: empty: "empty" is an incomplete or empty template`

	}

	// Add a non-empty template to check that the error is helpful.
	tmpl = New("empty")
	tests, err := New("").Parse(testTemplates)
	if err != nil {
		t.Fatal(err)
	}
	tmpl.AddParseTree("secondary", tests.Tree)
	err = tmpl.Execute(&b, 0)
	if err == nil {
		t.Fatal("expected second error")
	}
	got = err.Error()
	if got != want {
		t.Errorf("expected error %s got %s", want, got)

		{"String", Func, 19},
	},
	"html": {
		{"EscapeString", Func, 0},
		{"UnescapeString", Func, 0},
	},
	"html/template": {
		{"(*Error).Error", Method, 0},
		{"(*Template).AddParseTree", Method, 0},
		{"(*Template).Clone", Method, 0},
		{"(*Template).DefinedTemplates", Method, 6},
		{"(*Template).Delims", Method, 0},
		{"(*Template).Execute", Method, 0},