☑️ MyST-to-TeX: add support for checkboxes (#2560)

Co-authored-by: Rowan Cockett <[email protected]>

Author: nthiery

.changeset/stupid-otters-mate.md

@@ -0,0 +1,5 @@
+---
+"myst-to-tex": patch
+---
+
+MyST-to-TeX: add support for checkboxes

packages/myst-to-tex/src/index.ts

@@ -240,7 +240,14 @@ const handlers: Record<string, Handler> = {
     }
   },
   listItem(node, state) {
-    state.write('\\item ');
+    if (node.checked === true) {
+      state.write('\\item[$\\blacksquare$] ');
+    } else if (node.checked === false) {
+      state.write('\\item[$\\square$] ');
+    } else {
+      state.write('\\item ');
+    }
+
     if (node.children?.[0]?.type === 'paragraph' && node.children.length === 1) {
       state.renderChildren(node.children[0], true);
     } else {

packages/myst-to-tex/tests/basic.yml

@@ -624,8 +624,20 @@ cases:
                   children:
                     - type: text
                       value: 'A list item in a paragraph'
+            - type: listItem
+              children:
+                - type: text
+                  value: 'A checkbox'
+              checked: false
+            - type: listItem
+              children:
+                - type: text
+                  value: 'A checked checkbox'
+              checked: true
     latex: |-
       \begin{itemize}
       \item A list item
       \item A list item in a paragraph
+      \item[$\square$] A checkbox
+      \item[$\blacksquare$] A checked checkbox
       \end{itemize}