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All changes included in 1.10:

Regression fixes

  • (#14267): Fix Windows paths with accented characters (e.g., C:\Users\Sébastien\) breaking dart-sass compilation.
  • (#14281): Fix transient .quarto_ipynb files accumulating during quarto preview with Jupyter engine.
  • (#14298): Fix quarto preview browse URL including output filename (e.g., hello.html) for single-file documents, breaking Posit Workbench proxied server access.
  • (#14489): Restore --output-dir support for quarto preview of single files when no _quarto.yml is present (e.g. R-package workspaces). Regression introduced in v1.9.18.
  • (rstudio/rstudio#17333): Fix quarto inspect on standalone files emitting project metadata that breaks RStudio's publishing wizard.

Dependencies

  • (#14291): Update deno to v2.7.14 (fixes silent crash on Windows builds older than 16299).

Accessibility

  • (#14468): The axe accessibility report UI (HTML overlay, revealjs report slide, dashboard offcanvas) now uses its own theme-independent colors instead of inheriting from brand or theme. Keeps the report readable regardless of page styling, and stops axe from clobbering brand colors set via _brand.yml.

Formats

All Formats

  • (#14530): Add quarto.* Pandoc template variable namespace. format.language is now exposed as $quarto.language.<key>$ in custom Pandoc templates via the defaults-file variables: section, with no leakage into rendered output.

pdf

  • (#13588): Fix Lua error when rendering PDF with reference-location: margin and a footnote alongside a figure with fig-cap. (author: @mcanouil)
  • (#14553): Fix font fallbacks (mainfontfallback, sansfontfallback, monofontfallback) crashing LuaLaTeX on TeX Live 2026 (luaotfload v3.29+) instead of filling in missing glyphs. Bare fallback names (e.g. "DejaVu Sans") are now automatically colon-terminated as luaotfload requires; names that already carry a terminator or feature options (e.g. "FreeSans:", "Noto:mode=harf") are left untouched. A clear, actionable error is also reported if a fallback crash is still detected.
  • (#14553, #14558): Fix PDF render failing instead of auto-installing a missing font referenced by monofontfallback (and other mainfont/sansfont/monofont fallbacks).

typst

  • (#12556): Filter unavailable fonts from CSS font-family fallback lists before passing them to Typst, suppressing unknown font family warnings from Typst 1.12+ for fonts not installed locally. Available fonts are enumerated via typst fonts and cached per project. CSS generic family keywords (serif, sans-serif, monospace, cursive, fantasy, math) are also dropped, as Typst has no concept of them and would otherwise warn — for example a table styled with font-family: Arial, sans-serif no longer emits a warning for sans-serif.
  • (#14261): Fix theorem/example block titles containing inline code producing invalid Typst markup when syntax highlighting is applied.
  • (#14460): Fix CSS border and border-color declarations losing tokens that precede an rgb()/rgba() color (e.g. border: 0px solid rgb(255, 0, 0) rendering as a 2.25pt border instead of being suppressed). Also fixes: var(--brand-NAME) references crashing the Typst CSS translator when NAME contained digits (e.g. --brand-red-50); a crash when an rgba() alpha is unparseable; the dvmin length unit being silently rejected (a stray space in the unit table); CSS keywords like BOLD not matching as bold (CSS keywords are case-insensitive); invalid hex colors like #fffff being silently accepted as 2-component colors.
  • (#14511): Fix brand fonts downloaded for a Typst book project not being passed to typst compile, causing unknown font family warnings and fallback to Libertinus Serif.
  • (#14524, quarto-ext/orange-book#4): Fix orange-book Typst book running header not honoring lang: — chapter heading band stayed Chapter N. instead of the locale's word (e.g. Chapitre N. for lang: fr). Also fixes the orange-book list-of-figure-title / list-of-table-title template pipes which were silently rendering as empty strings. Consumes the $quarto.language.*$ template-variable namespace from #14530.

revealjs

  • (#14354): Fix trailing whitespace after author name on title slide when ORCID is not set. (author: @jnkatz)
  • (#14585): Fix empty blockquote (> ) crashing render for revealjs format.

Projects

Websites

  • (#13565, #14353): Fix sidebar logo not appearing on secondary sidebars in multi-sidebar website layouts.
  • (#14562): Fix a heading inside content-hidden when-format="llms-txt" (visible in HTML) losing its <section> wrapper and id in a website with llms-txt enabled, which broke its table-of-contents link, anchors, and cross-references.
  • (#14563): Fix a fatal error when a shortcode is used inside conditional content (e.g. content-visible when-format="llms-txt") in a website with llms-txt enabled.

Commands

quarto preview

  • (#10392): Fix quarto preview of a website or book project showing stale HTML for non-index pages after editing the source .qmd.
  • (#14281): Avoid creating a duplicate .quarto_ipynb file on preview startup for single-file Jupyter documents.
  • (#14533): Fix quarto preview not detecting a frontmatter format: change until the second render request. The first request after the edit now correctly restarts the preview process with the new format.

install

  • (#14304): Fix quarto install tinytex silently ignoring extraction failures. When archive extraction fails (e.g., .tar.xz on a system without xz-utils), the installer now reports a clear error instead of proceeding and failing with a confusing NotFound message.
  • (#11877, #9710): Add arm64 Linux support for quarto install chrome-headless-shell using Playwright CDN as download source, since Chrome for Testing has no arm64 Linux builds.
  • (#11877): Deprecate quarto install chromium — the command now transparently redirects to chrome-headless-shell. Installing chrome-headless-shell automatically removes any legacy Chromium installation. Use chrome-headless-shell instead, which always installs the latest stable Chrome (the legacy chromium installer pins an outdated Puppeteer revision that cannot receive security updates).
  • (#14363): Add retry logic for tool downloads to handle transient network failures (connection resets, CDN timeouts) during quarto install.
  • (#14538): quarto install tinytex and quarto update tinytex now set the TeX Live repository to the TinyTeX CDN-backed mirror at https://tlnet.yihui.org when reachable, falling back to mirror.ctan.org's automatic redirect and the existing US university mirrors otherwise. Matches the default in the R tinytex package since March 2026. Override the resolved repository with the QUARTO_TINYTEX_REPOSITORY environment variable, or with CTAN_REPO (also honored for parity with the R tinytex package). See https://yihui.org/en/2026/03/tinytex-ctan-mirror/ for background.

check

  • (#11877): quarto check install now shows a deprecation warning when legacy Chromium (installed via quarto install chromium) is detected, directing users to install chrome-headless-shell as a replacement.

quarto create

  • (#14250): Fix quarto create producing read-only files when Quarto is installed via system packages (e.g., .deb). Files copied from installed resources now have user-write permission ensured.

Lua API

  • (#14297): Fix quarto.utils.is_empty_node() returning inverted results for text nodes (Str, Code, RawInline).

Engines

Jupyter

  • (#13582): Fix application/pdf and text/latex MIME types not being preferred over image/svg+xml when rendering Jupyter notebooks to PDF, which caused errors when rsvg-convert was not available. (author: @jkrumbiegel)
  • (#14374): Avoid a crash when a third-party Jupyter kernel (observed with Maple 2025, built on XEUS) returns execute_reply without the required status field. The failing cell is recorded as an error instead of aborting the render. (author: @ChrisJefferson)

Other fixes and improvements

  • (#6651): Fix dart-sass compilation failing in enterprise environments where .bat files are blocked by group policy.
  • (#14255): Fix shortcodes inside inline and display math expressions not being resolved.
  • (#14342): Work around TOCTOU race in Deno's expandGlobSync that can cause unexpected exceptions to be raised while traversing directories during project initialization.
  • (#14445): Fix intermittent Uncaught (in promise) TypeError: Writable stream is closed or errored. aborting renders on Linux. execProcess now awaits and swallows the rejection from process.stdin.close() when the child closes its stdin first. The captured stderr is now also surfaced when typst-gather analyze falls back to staging all packages, so failures are diagnosable without bypassing quarto.
  • (#14359): Fix intermediate .quarto_ipynb file not being deleted after rendering a .qmd with Jupyter engine, causing numbered variants (_1, _2, ...) to accumulate on disk across renders.
  • (#14461): Fix quarto render --to pdf aborting with ERROR: Problem running 'fmtutil-sys --all' to rebuild format tree. when an automatically-installed LaTeX package's post-update format rebuild fails. Format-tree rebuild is now treated as best-effort housekeeping (matching upstream tinytex R behavior) — the failure is logged as a warning and the package install completes.
  • (#14472): Add support for Kotlin in code annotations and YAML cell options. (author: @barendgehrels)
  • (#14529): Fix bundled Julia engine path leaking into rendered YAML metadata and pandoc log output when running an installed Quarto. The internal subtree-engine filter only matched the source-tree share-path layout (resources/extension-subtrees/) and missed installed layouts where the path is share/extension-subtrees/.
  • (#14582): Fix format detection for extension formats (e.g. acm-pdf) in project preview, manuscript notebooks, MECA bundles, and website format ordering.