Merge pull request #8888 from quarto-dev/bugfix/8454

jupyter - allow mixed-case extensions in qmd file

Author: cscheid

news/changelog-1.5.md

@@ -46,6 +46,7 @@ All changes included in 1.5:
 - ([#4802](https://github.com/quarto-dev/quarto-cli/issues/4802)): Change name of temporary input notebook to avoid accidental overwriting.
 - ([#8433](https://github.com/quarto-dev/quarto-cli/issues/8433)): Escape jupyter widget states that contain `</script>` so they can be embedded in HTML documents.
 - When searching for kernelspecs that match `python`, prefer one one that matches an active Python venv.
+- ([#8454](https://github.com/quarto-dev/quarto-cli/issues/8454)): Allow Jupyter engine to handle markdown files with mixed-case extensions.
 
 ## Website Listings
 

src/execute/qmd.ts

@@ -8,6 +8,6 @@ import { extname } from "path/mod.ts";
 import { kQmdExtensions } from "./types.ts";
 
 export function isQmdFile(file: string) {
-  const ext = extname(file);
+  const ext = extname(file).toLowerCase();
   return kQmdExtensions.includes(ext);
 }

tests/docs/smoke-all/2024/02/26/8454.Qmd

@@ -0,0 +1,12 @@
+---
+title: hello
+filters:
+  - at: pre-ast
+    path: preast.lua
+---
+
+Hello world.
+
+```{python}
+print(1 + 2)
+```