<p><a href="https://github.com/b4n" class="user-mention">@b4n</a> good catch, yes space(or something) is needed to stop <code>--~</code> being not a comment.  </p>

<p>But of course then uncomment lines won't uncomment any legal lines that don't have the space, hopefully all Haskell programmers follow the convention as <a href="https://github.com/AleXoundOS" class="user-mention">@AleXoundOS</a> says :)</p>

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