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<h1 class="article-title">The dirtiest mistakes of OS X</h1>
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<time class="article-timestamp" datetime="2016-01-14T01:02:52-08:00">January 14, 2016</time>
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<p>I must have written about this elsewhere, but here are my top three:</p>
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<li><p><code>.DS_Store</code>. Finder litters faster than one could clean up.</p></li>
<li><p>HFS+ NFD*.<a class="footnoteRef" href="#fn1" id="fnref1"><sup>1</sup></a> Heard of the cursed encoding <code>UTF8-MAC</code>? Pure Evil. Culprit of tons of garbled text issues (especially cross platform ones) and probably most length miscalculation issues. Even Apple's Terminal.app can't do NFD right. I wonder how Korean users navigate their filesystems in terminal.</p></li>
<li><p>Plist XML. It's XML, but even worse.</p></li>
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<li id="fn1"><p>NFD with an asterisk, i.e., not even NFD. According to Apple in <a href="https://developer.apple.com/library/mac/qa/qa1173/_index.html">an old Technical Q&A</a>,</p>
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<p>The terms used in this Q&A, precomposed and decomposed, roughly correspond to Unicode Normal Forms C and D, respectively. However, most volume formats do not follow the exact specification for these normal forms. For example, HFS Plus (Mac OS Extended) uses a variant of Normal Form D in which U+2000 through U+2FFF, U+F900 through U+FAFF, and U+2F800 through U+2FAFF are not decomposed (this avoids problems with round trip conversions from old Mac text encodings). It's likely that your volume format has similar oddities.</p>
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<p>They are conscious enough to call these oddities.<a class="footnotes-backlink" href="#fnref1">↩︎</a></p></li>
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