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refactor(ui): use task-list token contract

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This commit is contained in:
Peter Steinberger
2026-07-13 23:29:14 -07:00
parent cbb5e97dd4
commit c44b854e8e
1 changed files with 8 additions and 37 deletions
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ui/src/components/markdown.ts
+8 -37
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@@ -1266,39 +1266,16 @@ md.core.ruler.after("linkify", "file-links", (state) => {
// accessibility when the item contains links (MDN warns against anchors inside labels).
md.use(markdownItTaskLists, { enabled: false, label: false });
// Mark the <input> html_inline token inside task-list items as trusted so the
// html_inline override lets it through. With label: false, the plugin generates
// only a single <input ...> token per item.
// We identify task-list items by the class="task-list-item" the plugin sets.
// The plugin inserts its checkbox as the first inline child. Trust only that
// generated token so later user-authored HTML remains escaped.
md.core.ruler.after("github-task-lists", "task-list-allowlist", (state) => {
const tokens = state.tokens;
for (let i = 2; i < tokens.length; i++) {
const token = tokens[i];
const paragraph = tokens[i - 1];
const listItem = tokens[i - 2];
if (!token || !paragraph || !listItem) {
for (const [index, listItem] of state.tokens.entries()) {
if (listItem.type !== "list_item_open" || listItem.attrGet("class") !== "task-list-item") {
continue;
}
if (token.type !== "inline" || !token.children) {
continue;
}
if (paragraph.type !== "paragraph_open") {
continue;
}
if (listItem.type !== "list_item_open") {
continue;
}
const cls = listItem.attrGet("class") ?? "";
if (!cls.includes("task-list-item")) {
continue;
}
// Only trust the checkbox <input> token from the plugin, not other user-supplied HTML.
// The plugin inserts an <input> at the start; user HTML elsewhere must stay escaped.
for (const child of token.children) {
if (child.type === "html_inline" && /^<input\s/i.test(child.content)) {
child.meta = { taskListPlugin: true };
break; // Only one checkbox per item
}
const checkbox = state.tokens[index + 2]?.children?.[0];
if (checkbox?.type === "html_inline") {
checkbox.meta = { taskListPlugin: true };
}
}
});
@@ -1315,13 +1292,7 @@ md.renderer.rules.html_block = (tokens, idx) => {
};
md.renderer.rules.html_inline = (tokens, idx) => {
const token = tokens[idx];
if (!token) {
return "";
}
if (token.meta?.taskListPlugin === true) {
return token.content;
}
return escapeHtml(token.content);
return token?.meta?.taskListPlugin === true ? token.content : escapeHtml(token?.content ?? "");
};
md.renderer.rules.code_inline = (tokens, idx, options, env, self) => {