Turns out that writing quines in your new toy language is a great way of finding string escaping bugs!
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Turns out that Emacs docstrings have an elaborate escaping mechanism. \[foo] shows the keybinding for foo, but \=\[foo] shows \[foo] literally.
If you're a Helpful user, we now handle this correctly, *and* show handy buttons!
Nifty Emacs package of the day: https://github.com/magnars/string-edit.el -- allows you to edit strings without worrying about escaping.