Fix citation BibTeX copy button shown with code-copy: false

news/changelog-1.11.md

@@ -81,6 +81,7 @@ All changes included in 1.11:
 - ([#15125](https://github.com/quarto-dev/quarto-cli/pull/15125)): Fix Google Scholar metadata failing the render with a CSL JSON (`.json`) bibliography.
 - ([#15128](https://github.com/quarto-dev/quarto-cli/pull/15128)): Fix Google Scholar metadata missing references with a YAML bibliography not wrapped in `---` delimiters.
 - ([#15131](https://github.com/quarto-dev/quarto-cli/issues/15131)): Fix the light/dark toggle appearing, with no dark styles to switch to, when the `dark` brand file holds only comments and is ignored.
+- ([#15207](https://github.com/quarto-dev/quarto-cli/issues/15207)): Fix the BibTeX citation in the HTML appendix showing a copy button that does nothing when `code-copy: false` is set.
 
 ### `pdf`
 

src/format/html/format-html-appendix.ts

@@ -26,6 +26,7 @@ import {
 import {
   createCodeBlock,
   createCodeCopyButton,
+  formatHasCodeCopy,
   hasMarginCites,
   hasMarginRefs,
   insertFootnotesTitle,
@@ -306,13 +307,18 @@ export async function processDocumentAppendix(
             const bibTexDiv = createCodeBlock(doc, cite.bibtex, "bibtex");
             bibTexDiv.classList.add(kQuartoCiteBibtexClass);
 
-            const outerScaffold = doc.createElement("div");
-            outerScaffold.classList.add("code-copy-outer-scaffold");
-            outerScaffold.appendChild(bibTexDiv);
-            contentsDiv.appendChild(outerScaffold);
+            if (formatHasCodeCopy(format)) {
+              bibTexDiv.classList.add("code-with-copy");
+              const outerScaffold = doc.createElement("div");
+              outerScaffold.classList.add("code-copy-outer-scaffold");
+              outerScaffold.appendChild(bibTexDiv);
+              contentsDiv.appendChild(outerScaffold);
 
-            const copyButton = createCodeCopyButton(doc, format);
-            outerScaffold.appendChild(copyButton);
+              const copyButton = createCodeCopyButton(doc, format);
+              outerScaffold.appendChild(copyButton);
+            } else {
+              contentsDiv.appendChild(bibTexDiv);
+            }
           }
 
           if (cite?.html) {

src/format/html/format-html-shared.ts

@@ -28,6 +28,8 @@ import {
 import { formatResourcePath } from "../../core/resources.ts";
 import { Document, Element } from "../../core/deno-dom.ts";
 import { normalizePath } from "../../core/path.ts";
+import { formatHasBootstrap } from "./format-html-info.ts";
+import { HtmlFormatFeatureDefaults } from "./format-html-types.ts";
 
 // features that are enabled by default for 'html'. setting
 // all of these to false will yield the minimal html output
@@ -73,6 +75,33 @@ export const kCitation = "citation";
 export const kDocumentCss = "document-css";
 export const kBootstrapDependencyName = "bootstrap";
 
+export function htmlFormatFeatureDefaults(
+  format: Format,
+): HtmlFormatFeatureDefaults {
+  const bootstrap = formatHasBootstrap(format);
+  const minimal = format.metadata[kMinimal] === true;
+  return {
+    tabby: !minimal && !bootstrap,
+    copyCode: !minimal,
+    anchors: !minimal,
+    hoverCitations: !minimal,
+    hoverFootnotes: !minimal,
+    figResponsive: !minimal,
+    codeAnnotations: !minimal,
+    hoverXrefs: !minimal,
+  };
+}
+
+// whether code copy buttons (and clipboard.js) are enabled for this format
+export function formatHasCodeCopy(
+  format: Format,
+  enabledByDefault = htmlFormatFeatureDefaults(format).copyCode,
+): boolean {
+  return enabledByDefault
+    ? format.metadata[kCodeCopy] !== false
+    : !!format.metadata[kCodeCopy];
+}
+
 export const clipboardDependency = () => {
   const dependency: FormatDependency = { name: "clipboard" };
   dependency.scripts = [];
@@ -492,7 +521,6 @@ export function createCodeBlock(
 ) {
   const preEl = doc.createElement("PRE");
   preEl.classList.add("sourceCode");
-  preEl.classList.add("code-with-copy");
 
   const codeEl = doc.createElement("CODE");
   codeEl.classList.add("sourceCode");

src/format/html/format-html.ts

@@ -67,12 +67,13 @@ import { bootstrapExtras } from "./format-html-bootstrap.ts";
 import {
   clipboardDependency,
   createCodeCopyButton,
+  formatHasCodeCopy,
+  htmlFormatFeatureDefaults,
   kAnchorSections,
   kAxe,
   kBootstrapDependencyName,
   kCitationsHover,
   kCodeAnnotations,
-  kCodeCopy,
   kComments,
   kDocumentCss,
   kFootnotesHover,
@@ -306,11 +307,7 @@ export async function htmlFormatExtras(
   } else {
     options.tabby = format.metadata[kTabsets] || false;
   }
-  if (featureDefaults.copyCode) {
-    options.copyCode = format.metadata[kCodeCopy] !== false;
-  } else {
-    options.copyCode = format.metadata[kCodeCopy] || false;
-  }
+  options.copyCode = formatHasCodeCopy(format, featureDefaults.copyCode);
   if (featureDefaults.anchors) {
     options.anchors = format.metadata[kAnchorSections] !== false;
   } else {
@@ -682,23 +679,6 @@ function htmlFormatFilterParams(format: Format) {
   };
 }
 
-function htmlFormatFeatureDefaults(
-  format: Format,
-): HtmlFormatFeatureDefaults {
-  const bootstrap = formatHasBootstrap(format);
-  const minimal = format.metadata[kMinimal] === true;
-  return {
-    tabby: !minimal && !bootstrap,
-    copyCode: !minimal,
-    anchors: !minimal,
-    hoverCitations: !minimal,
-    hoverFootnotes: !minimal,
-    figResponsive: !minimal,
-    codeAnnotations: !minimal,
-    hoverXrefs: !minimal,
-  };
-}
-
 function htmlFormatPostprocessor(
   format: Format,
   featureDefaults?: HtmlFormatFeatureDefaults,
@@ -712,9 +692,7 @@ function htmlFormatPostprocessor(
   }
 
   // read options
-  const codeCopy = featureDefaults.copyCode
-    ? format.metadata[kCodeCopy] !== false
-    : format.metadata[kCodeCopy] || false;
+  const codeCopy = formatHasCodeCopy(format, featureDefaults.copyCode);
 
   const anchors = featureDefaults.anchors
     ? format.metadata[kAnchorSections] !== false

tests/docs/smoke-all/2026/10/27/issue-15207.qmd

@@ -0,0 +1,19 @@
+---
+title: "Citation BibTeX block without code-copy"
+author: "Author name"
+date: "2025-01-01"
+format: html
+citation: true
+code-copy: false
+_quarto:
+  tests:
+    html:
+      ensureHtmlElements:
+        -
+          - '#quarto-citation pre.quarto-appendix-bibtex'
+        -
+          - '#quarto-citation button.code-copy-button'
+          - '#quarto-citation div.code-copy-outer-scaffold'
+---
+
+With `code-copy: false`, clipboard.js is not loaded, so a copy button on the BibTeX block in the citation appendix would do nothing. The BibTeX block is still rendered, but without the copy button or its scaffold, the same as other code blocks in the document (#15207).