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

Extension-resolved logo paths (containing _extensions or starting with ..)
are already relative to the input document and should not have the project
offset applied. This fixes rendering Typst format extensions with logos
when the document is in a project subdirectory.

The same pattern was applied to font-paths in #13745 / PR #13902.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: gordonwoodhull

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/_extensions/issue/quarto-icon.svg

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

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

@@ -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.