Man pages won't have auto gen tag when option is disabled (#1104)

* Man pages wont have  auto gen tag when option is disabled

- this addresses #741

* Add documentation for doc generation and a changelog

doc/README.md

@@ -0,0 +1,12 @@
+# Documentation generation
+
+- [Man page docs](./man_docs.md)
+- [Markdown docs](./md_docs.md)
+- [Rest docs](./rest_docs.md)
+- [Yaml docs](./yaml_docs.md)
+
+## Options
+### `DisableAutoGenTag`
+You may set `cmd.DisableAutoGenTag = true`
+to _entirely_ remove the auto generated string "Auto generated by spf13/cobra..."
+from any documentation source.

doc/man_docs.go

@@ -105,7 +105,7 @@ func GenMan(cmd *cobra.Command, header *GenManHeader, w io.Writer) error {
 	if header == nil {
 		header = &GenManHeader{}
 	}
-	if err := fillHeader(header, cmd.CommandPath()); err != nil {
+	if err := fillHeader(header, cmd.CommandPath(), cmd.DisableAutoGenTag); err != nil {
 		return err
 	}
 
@@ -114,7 +114,7 @@ func GenMan(cmd *cobra.Command, header *GenManHeader, w io.Writer) error {
 	return err
 }
 
-func fillHeader(header *GenManHeader, name string) error {
+func fillHeader(header *GenManHeader, name string, disableAutoGen bool) error {
 	if header.Title == "" {
 		header.Title = strings.ToUpper(strings.Replace(name, " ", "\\-", -1))
 	}
@@ -133,7 +133,7 @@ func fillHeader(header *GenManHeader, name string) error {
 		header.Date = &now
 	}
 	header.date = (*header.Date).Format("Jan 2006")
-	if header.Source == "" {
+	if header.Source == "" && !disableAutoGen {
 		header.Source = "Auto generated by spf13/cobra"
 	}
 	return nil

doc/man_docs_test.go

@@ -101,6 +101,8 @@ func TestGenManNoGenTag(t *testing.T) {
 
 	unexpected := translate("#HISTORY")
 	checkStringOmits(t, output, unexpected)
+	unexpected = translate("Auto generated by spf13/cobra")
+	checkStringOmits(t, output, unexpected)
 }
 
 func TestGenManSeeAlso(t *testing.T) {