fix: Typst extension logo path resolution in subdirectories (#13917)

news/changelog-1.9.md

@@ -52,6 +52,7 @@ All changes included in 1.9:
   - Two-column layout now uses `set page(columns:)` instead of `columns()` function, fixing compatibility with landscape sections.
   - Title block now properly spans both columns in multi-column layouts.
 - ([#13870](https://github.com/quarto-dev/quarto-cli/issues/13870)): Add support for `alt` attribute on cross-referenced equations for improved accessibility. (author: @mcanouil)
+- ([#13917](https://github.com/quarto-dev/quarto-cli/issues/13917)): Fix resource path resolution for Typst format extensions when document is in a project subdirectory. Extension-resolved paths are now correctly detected and not double-prefixed with the project offset.
 
 ### `pdf`
 

src/resources/filters/quarto-post/typst-brand-yaml.lua

@@ -320,9 +320,17 @@ function render_typst_brand_yaml()
           imageFilename = imageFilename and imageFilename:gsub('\\_', '_')
         else
           -- backslashes need to be doubled for Windows
+          -- Only apply project offset for brand logo paths (project-relative).
+          -- Extension-resolved paths (containing _extensions or starting with ..)
+          -- are already input-relative and should not have the offset applied.
+          -- See #13745 for the same pattern applied to font-paths.
           if imageFilename[1] ~= "/" and _quarto.projectOffset() ~= "." then
-            local offset = _quarto.projectOffset()
-            imageFilename = pandoc.path.join({offset, imageFilename})
+            local is_extension_path = string.find(imageFilename, "_extensions") or
+              string.sub(imageFilename, 1, 2) == ".."
+            if not is_extension_path then
+              local offset = _quarto.projectOffset()
+              imageFilename = pandoc.path.join({offset, imageFilename})
+            end
           end
           imageFilename = string.gsub(imageFilename, '\\', '\\\\')
         end

tests/docs/smoke-all/typst/extension-logo/.gitignore

@@ -0,0 +1,2 @@
+/.quarto/
+**/*.quarto_ipynb

tests/docs/smoke-all/typst/extension-logo/_extensions/issue/_extension.yml

@@ -0,0 +1,8 @@
+title: Issue Extension
+author: Test
+version: "1.0.0"
+quarto-required: ">=1.3.0"
+contributes:
+  formats:
+    typst:
+      logo: quarto-icon.svg

tests/docs/smoke-all/typst/extension-logo/_quarto.yml

@@ -0,0 +1,2 @@
+project:
+  title: "Extension Logo Test"

tests/docs/smoke-all/typst/extension-logo/sub/template.qmd

@@ -0,0 +1,14 @@
+---
+title: "Extension Logo Test"
+format: issue-typst
+_quarto:
+  tests:
+    typst:
+      ensureTypstFileRegexMatches:
+        -
+          - 'image\("\.\./(_extensions|_extensions)(/|\\\\)issue(/|\\\\)quarto-icon\.svg"'
+        -
+          - 'image\("\.\./\.\./(_extensions|_extensions)'
+---
+
+This is a test document that uses a Typst format extension with a logo.