tests adapted from <https://github.github.com/gfm/#task-list-items-extension-> ``` % pandoc - [ ] foo - [x] bar ^D <ul> <li><input type="checkbox" disabled="" /> foo</li> <li><input type="checkbox" disabled="" checked="" /> bar</li> </ul> ``` ``` % pandoc - [x] foo - [ ] bar - [x] baz - [ ] bim ^D <ul> <li><input type="checkbox" disabled="" checked="" /> foo<ul> <li><input type="checkbox" disabled="" /> bar</li> <li><input type="checkbox" disabled="" checked="" /> baz</li> </ul></li> <li><input type="checkbox" disabled="" /> bim</li> </ul> ``` custom html task list test: ``` % pandoc - [ ] unchecked - plain item - [x] checked paragraph 1. [ ] ordered unchecked 2. [] plain item 3. [x] ordered checked paragraph - [ ] list item with a second paragraph - [x] checked ^D <ul> <li><input type="checkbox" disabled="" /> unchecked</li> <li>plain item</li> <li><input type="checkbox" disabled="" checked="" /> checked</li> </ul> <p>paragraph</p> <ol type="1"> <li><input type="checkbox" disabled="" /> ordered unchecked</li> <li>[] plain item</li> <li><input type="checkbox" disabled="" checked="" /> ordered checked</li> </ol> <p>paragraph</p> <ul> <li><p><input type="checkbox" disabled="" /> list item with a</p><p>second paragraph</p></li> <li><p><input type="checkbox" disabled="" checked="" /> checked</p></li> </ul> ``` latex task list test: ``` % pandoc -t latex - [ ] foo bar baz - [x] ok ^D \begin{itemize} \item[$\square$] foo bar baz \item[$\boxtimes$] ok \end{itemize} ``` round trip: ``` % pandoc -f markdown -t markdown - [ ] foo - [x] bar ^D - [ ] foo - [x] bar ```