Add render hooks for inline and block passthrough snippets

Fixes #11927

markup/goldmark/passthrough/passthrough_integration_test.go

@@ -0,0 +1,62 @@
+// Copyright 2024 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package passthrough_test
+
+import (
+	"testing"
+
+	"github.com/gohugoio/hugo/hugolib"
+)
+
+func TestPassthroughRenderHook(t *testing.T) {
+	t.Parallel()
+
+	files := `
+-- config.toml --
+[markup.goldmark.extensions.passthrough]
+enable = true
+[markup.goldmark.extensions.passthrough.delimiters]
+block = [['$$', '$$']]
+inline = [['$', '$']]
+-- content/p1.md --
+---
+title: "p1"
+---
+## LaTeX test
+
+Some inline LaTeX 1: $a^*=x-b^*$.
+
+Block equation that would be mangled by default parser:
+
+$$a^*=x-b^*$$
+
+Some inline LaTeX 2: $a^*=x-b^*$.
+
+-- layouts/_default/single.html --
+{{ .Content }}
+-- layouts/_default/_markup/render-passthrough-block.html --
+Passthrough block: {{ .Inner | safeHTML }}|{{ .Type }}|{{ .Ordinal }}:END
+-- layouts/_default/_markup/render-passthrough-inline.html --
+Passthrough inline: {{ .Inner | safeHTML }}|{{ .Type }}|{{ .Ordinal }}:END
+
+`
+
+	b := hugolib.Test(t, files)
+	b.AssertFileContent("public/p1/index.html", `
+		Some inline LaTeX 1: Passthrough inline: a^*=x-b^*|inline|0:END
+		Passthrough block: a^*=x-b^*|block|1:END
+		Some inline LaTeX 2: Passthrough inline: a^*=x-b^*|inline|2:END
+
+	`)
+}