Fix language handling in ExecuteAsTemplate

Fixes #6331

5 files changed, 51 insertions, 26 deletions

diff --git a/hugolib/hugo_sites_build_test.go b/hugolib/hugo_sites_build_test.go
index 03853bff6..e022cb2d3 100644
--- a/hugolib/hugo_sites_build_test.go
+++ b/hugolib/hugo_sites_build_test.go
@@ -1445,5 +1445,17 @@ weight: 2002
 PNG Data
 `)
 
+	i18nContent := func(id, value string) string {
+		return fmt.Sprintf(`
+[%s]
+other = %q
+`, id, value)
+	}
+
+	b.WithSourceFile("i18n/en.toml", i18nContent("hello", "Hello"))
+	b.WithSourceFile("i18n/fr.toml", i18nContent("hello", "Bonjour"))
+	b.WithSourceFile("i18n/nb.toml", i18nContent("hello", "Hallo"))
+	b.WithSourceFile("i18n/nn.toml", i18nContent("hello", "Hallo"))
+
 	return &multiSiteTestBuilder{sitesBuilder: b, configFormat: configFormat, config: config, configData: configData}
 }
diff --git a/hugolib/resource_chain_test.go b/hugolib/resource_chain_test.go
index 10539d1bb..9d869ba41 100644
--- a/hugolib/resource_chain_test.go
+++ b/hugolib/resource_chain_test.go
@@ -418,8 +418,7 @@ Fingerprinted: {{ $fingerprinted.RelPermalink }}
 
 		}},
 		{"execute-as-template", func() bool {
-			// TODO(bep) eventually remove
-			return isGo111()
+			return true
 		}, func(b *sitesBuilder) {
 			b.WithTemplates("home.html", `
 {{ $var := "Hugo Page" }}
@@ -668,3 +667,30 @@ JSON: {{ $json.RelPermalink }}: {{ $json.Content }}
 		"JSON: /jsons/data1.json: json1 content",
 		"JSONS: 2", "/jsons/data1.json: json1 content")
 }
+
+func TestExecuteAsTemplateWithLanguage(t *testing.T) {
+	b := newMultiSiteTestDefaultBuilder(t)
+	indexContent := `
+Lang: {{ site.Language.Lang }}
+{{ $templ := "{{T \"hello\"}}" | resources.FromString "f1.html" }}
+{{ $helloResource := $templ | resources.ExecuteAsTemplate (print "f%s.html" .Lang) . }}
+Hello1: {{T "hello"}}
+Hello2: {{ $helloResource.Content }}
+LangURL: {{ relLangURL "foo" }}
+`
+	b.WithTemplatesAdded("index.html", indexContent)
+	b.WithTemplatesAdded("index.fr.html", indexContent)
+
+	b.Build(BuildCfg{})
+
+	b.AssertFileContent("public/en/index.html", `
+Hello1: Hello
+Hello2: Hello
+`)
+
+	b.AssertFileContent("public/fr/index.html", `
+Hello1: Bonjour
+Hello2: Bonjour
+`)
+
+}
diff --git a/tpl/template.go b/tpl/template.go
index cd00d8061..0d7598fde 100644
--- a/tpl/template.go
+++ b/tpl/template.go
@@ -50,8 +50,6 @@ type TemplateHandler interface {
 	AddLateTemplate(name, tpl string) error
 	LoadTemplates(prefix string) error
 
-	NewTextTemplate() TemplateParseFinder
-
 	MarkReady() error
 	RebuildClone()
 }
diff --git a/tpl/tplimpl/template.go b/tpl/tplimpl/template.go
index 35407722a..602777524 100644
--- a/tpl/tplimpl/template.go
+++ b/tpl/tplimpl/template.go
@@ -98,8 +98,6 @@ type templateHandler struct {
 	text *textTemplates
 	html *htmlTemplates
 
-	extTextTemplates []*textTemplate
-
 	amberFuncMap template.FuncMap
 
 	errors []*templateErr
@@ -153,15 +151,7 @@ func (t *templateHandler) addShortcodeVariant(name string, info tpl.Info, templ
 	}
 }
 
-// NewTextTemplate provides a text template parser that has all the Hugo
-// template funcs etc. built-in.
-func (t *templateHandler) NewTextTemplate() tpl.TemplateParseFinder {
-	t.mu.Lock()
-	defer t.mu.Unlock()
-
-	tt := &textTemplate{t: texttemplate.New("")}
-	t.extTextTemplates = append(t.extTextTemplates, tt)
-
+func (t *templateHandler) wrapTextTemplate(tt *textTemplate) tpl.TemplateParseFinder {
 	return struct {
 		tpl.TemplateParser
 		tpl.TemplateLookup
@@ -283,8 +273,11 @@ func (t *templateHandler) clone(d *deps.Deps) *templateHandler {
 		shortcodes:   make(map[string]*shortcodeTemplates),
 		templateInfo: t.templateInfo,
 		html:         &htmlTemplates{t: template.Must(t.html.t.Clone()), overlays: make(map[string]*template.Template), templatesCommon: t.html.templatesCommon},
-		text:         &textTemplates{textTemplate: &textTemplate{t: texttemplate.Must(t.text.t.Clone())}, overlays: make(map[string]*texttemplate.Template), templatesCommon: t.text.templatesCommon},
-		errors:       make([]*templateErr, 0),
+		text: &textTemplates{
+			textTemplate: &textTemplate{t: texttemplate.Must(t.text.t.Clone())},
+			standalone:   &textTemplate{t: texttemplate.New("")},
+			overlays:     make(map[string]*texttemplate.Template), templatesCommon: t.text.templatesCommon},
+		errors: make([]*templateErr, 0),
 	}
 
 	for k, v := range t.shortcodes {
@@ -302,6 +295,7 @@ func (t *templateHandler) clone(d *deps.Deps) *templateHandler {
 	}
 
 	d.Tmpl = c
+	d.TextTmpl = c.wrapTextTemplate(c.text.standalone)
 
 	c.initFuncs()
 
@@ -339,6 +333,7 @@ func newTemplateAdapter(deps *deps.Deps) *templateHandler {
 	}
 	textT := &textTemplates{
 		textTemplate:    &textTemplate{t: texttemplate.New("")},
+		standalone:      &textTemplate{t: texttemplate.New("")},
 		overlays:        make(map[string]*texttemplate.Template),
 		templatesCommon: common,
 	}
@@ -431,6 +426,7 @@ func (t *textTemplates) setTemplateFuncster(f *templateFuncster) {
 type textTemplates struct {
 	*templatesCommon
 	*textTemplate
+	standalone *textTemplate
 	clone      *texttemplate.Template
 	cloneClone *texttemplate.Template
 
@@ -468,6 +464,7 @@ func (t *textTemplates) lookup(name string) *texttemplate.Template {
 func (t *templateHandler) setFuncs(funcMap map[string]interface{}) {
 	t.html.setFuncs(funcMap)
 	t.text.setFuncs(funcMap)
+	t.setFuncMapInTemplate(t.text.standalone.t, funcMap)
 }
 
 // SetFuncs replaces the funcs in the func maps with new definitions.
@@ -781,10 +778,6 @@ func (t *templateHandler) initFuncs() {
 		}
 	}
 
-	for _, extText := range t.extTextTemplates {
-		extText.t.Funcs(funcMap)
-	}
-
 	// Amber is HTML only.
 	t.amberFuncMap = template.FuncMap{}
 
diff --git a/tpl/tplimpl/templateProvider.go b/tpl/tplimpl/templateProvider.go
index 932222344..605c47d87 100644
--- a/tpl/tplimpl/templateProvider.go
+++ b/tpl/tplimpl/templateProvider.go
@@ -26,11 +26,9 @@ var DefaultTemplateProvider *TemplateProvider
 // Update updates the Hugo Template System in the provided Deps
 // with all the additional features, templates & functions.
 func (*TemplateProvider) Update(deps *deps.Deps) error {
-
 	newTmpl := newTemplateAdapter(deps)
 	deps.Tmpl = newTmpl
-
-	deps.TextTmpl = newTmpl.NewTextTemplate()
+	deps.TextTmpl = newTmpl.wrapTextTemplate(newTmpl.text.standalone)
 
 	newTmpl.initFuncs()
 
@@ -56,8 +54,6 @@ func (*TemplateProvider) Clone(d *deps.Deps) error {
 	t := d.Tmpl.(*templateHandler)
 	clone := t.clone(d)
 
-	d.Tmpl = clone
-
 	return clone.MarkReady()
 
 }