tpl: Add some comments

diff --git a/tpl/internal/go_templates/texttemplate/hugo_template.go b/tpl/internal/go_templates/texttemplate/hugo_template.go
index c2738ec53e60b87165952ff89a204f6550304a18..be8a5558f504c8ae0c9db695fef2c5950d30ab52 100644 (file)
--- a/tpl/internal/go_templates/texttemplate/hugo_template.go
+++ b/tpl/internal/go_templates/texttemplate/hugo_template.go
@@ -88,14 +88,14 @@ func (t *Template) executeWithState(state *state, value reflect.Value) (err erro
        return
 }
 
-// Below are modifed structs etc.
+// Below are modifed structs etc. The changes are marked with "Added for Hugo."
 
 // state represents the state of an execution. It's not part of the
 // template so that multiple executions of the same template
 // can execute in parallel.
 type state struct {
        tmpl   *Template
-       helper ExecHelper
+       helper ExecHelper // Added for Hugo.
        wr     io.Writer
        node   parse.Node // current node, for errors
        vars   []variable // push-down stack of variable values.
@@ -109,6 +109,7 @@ func (s *state) evalFunction(dot reflect.Value, node *parse.IdentifierNode, cmd
        var function reflect.Value
        var ok bool
        if s.helper != nil {
+               // Added for Hugo.
                function, ok = s.helper.GetFunc(name)
        }
 
@@ -175,6 +176,7 @@ func (s *state) evalField(dot reflect.Value, fieldName string, node parse.Node,
                        }
                        var result reflect.Value
                        if s.helper != nil {
+                               // Added for Hugo.
                                result, _ = s.helper.GetMapValue(receiver, nameVal)
                        } else {
                                result = receiver.MapIndex(nameVal)