"regexp"
	"text/template"
	"text/template/parse"
)

// escapeTemplate rewrites the named template, which must be
// associated with t, to guarantee that the output of any of the named
// templates is properly escaped. If no error is returned, then the named templates have
// been modified. Otherwise the named templates have been rendered
// unusable.
func escapeTemplate(tmpl *Template, node parse.Node, name string) error {

	defer t.nameSpace.mu.Unlock()
	t.nameSpace.escaped = true
	if t.escapeErr == nil {
		if t.Tree == nil {
			return fmt.Errorf("template: %q is an incomplete or empty template", t.Name())
		}
		if err := escapeTemplate(t, t.text.Root, t.Name()); err != nil {
			return err
		}
	} else if t.escapeErr != escapeOK {
		return t.escapeErr
	}
	return nil
}

	if err != nil {
		t.Error(err)
	}
	if b.String() != "result" {
		t.Errorf("%s got %q, expected %q", textCall, b.String(), "result")
	}
}

// Issue 39807. There was a race applying escapeTemplate.

const raceText = `
{{- define "jstempl" -}}
var v = "v";
{{- end -}}
<script type="application/javascript">
{{ template "jstempl" $ }}
</script>
`