Strip nested page context markers from standalone RenderShortcodes

Fixes #14732

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

hugolib/integrationtest_builder.go

@@ -2,7 +2,6 @@ package hugolib
 
 import (
 	"bytes"
-	"context"
 	"encoding/base64"
 	"errors"
 	"fmt"
@@ -39,8 +38,8 @@ import (
 	"github.com/gohugoio/hugo/hugofs/hglob"
 	"github.com/gohugoio/hugo/hugolib/sitesmatrix"
 	"github.com/gohugoio/hugo/identity"
+	"github.com/gohugoio/hugo/media"
 	"github.com/spf13/afero"
-	"github.com/spf13/cast"
 	"golang.org/x/text/unicode/norm"
 	"golang.org/x/tools/txtar"
 )
@@ -462,12 +461,20 @@ func (s *IntegrationTestBuilder) AssertFileContentExact(filename string, matches
 
 func (s *IntegrationTestBuilder) AssertNoRenderShortcodesArtifacts() {
 	s.Helper()
-	for _, p := range s.H.Pages() {
-		content, err := p.Content(context.Background())
+	afero.Walk(s.fs.PublishDir, "", func(path string, info os.FileInfo, err error) error {
+		if err != nil || info.IsDir() {
+			return err
+		}
+		ext := strings.TrimPrefix(filepath.Ext(path), ".")
+		if !s.H.Conf.GetConfigSection("mediaTypes").(media.Types).IsTextSuffix(ext) {
+			return nil
+		}
+		content, err := afero.ReadFile(s.fs.PublishDir, path)
 		s.Assert(err, qt.IsNil)
-		comment := qt.Commentf("Page: %s\n%s", p.Path(), content)
-		s.Assert(strings.Contains(cast.ToString(content), "__hugo_ctx"), qt.IsFalse, comment)
-	}
+		comment := qt.Commentf("File: %s\n%s", path, string(content))
+		s.Assert(strings.Contains(string(content), "__hugo_ctx"), qt.IsFalse, comment)
+		return nil
+	})
 }
 
 type IntegrationTestImageHelper struct {

hugolib/page__content.go

@@ -1109,6 +1109,10 @@ func (c *cachedContentScope) RenderShortcodes(ctx context.Context) (template.HTM
 		return template.HTML(hugocontext.Wrap(cc, pco.po.p.pid)), nil
 	}
 
+	// Strip any Hugo context markers from nested RenderShortcodes calls
+	// that won't be processed by Goldmark.
+	cc = hugocontext.Strip(cc)
+
 	return helpers.BytesToHTML(cc), nil
 }
 

hugolib/rendershortcodes_test.go

@@ -521,3 +521,34 @@ not emphasized
 		"<p>a</p>\n<p><em>emphasized</em></p>\n<p>not emphasized</p>\n<p>b</p>\n",
 	)
 }
+
+// Issue 14732.
+func TestRenderShortcodesStandalone(t *testing.T) {
+	t.Parallel()
+
+	files := `
+-- hugo.toml --
+disableKinds = ['section','rss','sitemap','taxonomy','term']
+-- layouts/all.html --
+RenderShortcodes: {{ .RenderShortcodes }}|
+-- layouts/_shortcodes/headings.html --
+## Heading 1
+### Heading 2
+{{ $p := site.GetPage "includeme" }}
+RenderShortcodes2: {{ $p.RenderShortcodes }}|
+-- content/p1.md --
+---
+title: "p1"
+---
+{{% headings "headings" %}}
+-- content/includeme.md --
+---
+title: "includeme"
+---
+## Heading 2
+`
+
+	b := Test(t, files)
+
+	b.AssertNoRenderShortcodesArtifacts()
+}

markup/goldmark/hugocontext/hugocontext.go

@@ -104,6 +104,14 @@ var (
 	hugoCtxRe           = regexp.MustCompile(`{{__hugo_ctx( pid=\d+)?/?}}\n?`)
 )
 
+// Strip strips any Hugo context markers from b.
+func Strip(b []byte) []byte {
+	if !bytes.Contains(b, hugoCtxPrefix) {
+		return b
+	}
+	return hugoCtxRe.ReplaceAll(b, nil)
+}
+
 var _ parser.InlineParser = (*hugoContextParser)(nil)
 
 type hugoContextParser struct{}