fix: theorem/example block titles with inline code produce invalid Typst markup

Use content brackets [...] instead of string quotes "..." when passing
the title argument to Typst theorem functions, so that syntax-highlighted
inline code (e.g. #NormalTok(...)) is valid in that position.

Fixes #14261

Author: gordonwoodhull

news/changelog-1.10.md

@@ -1,3 +1,8 @@
 All changes included in 1.10:
 
+## Formats
+
+### `typst`
+
+- ([#14261](https://github.com/quarto-dev/quarto-cli/issues/14261)): Fix theorem/example block titles containing inline code producing invalid Typst markup when syntax highlighting is applied.
 

src/resources/filters/customnodes/theorem.lua

@@ -259,9 +259,9 @@ end, function(thm)
     ensure_typst_theorems(type)
     local preamble = pandoc.Plain({pandoc.RawInline("typst", "#" .. theorem_type.env .. "(")})
     if name and #name > 0 then
-      preamble.content:insert(pandoc.RawInline("typst", 'title: "'))
+      preamble.content:insert(pandoc.RawInline("typst", 'title: ['))
       tappend(preamble.content, name)
-      preamble.content:insert(pandoc.RawInline("typst", '"'))
+      preamble.content:insert(pandoc.RawInline("typst", ']'))
     end
     preamble.content:insert(pandoc.RawInline("typst", ")["))
     local callthm = make_scaffold(pandoc.Div, preamble)

tests/docs/smoke-all/typst/theorem/theorem-inline-code-title.qmd

@@ -0,0 +1,37 @@
+---
+format:
+  typst:
+    keep-typ: true
+_quarto:
+  tests:
+    typst:
+      ensureTypstFileRegexMatches:
+        -
+          - "title: \\["
+        -
+          - "\\(title: \""
+---
+
+# Theorem Test - Inline Code in Title
+
+::: {#exm-devtools}
+
+## `devtools`
+
+A useful package for R developers.
+
+```r
+install.packages("devtools")
+```
+
+:::
+
+::: {#thm-bayes}
+
+## `P(A|B)` = Bayes' Rule
+
+If $P(B) > 0$, then $P(A|B) = \frac{P(B|A)P(A)}{P(B)}$.
+
+:::
+
+See @exm-devtools and @thm-bayes.