title: What is the {L} Unicode category?
body: <p>I came across some regular expressions that contain <code>[^\\p{L}]</code>. I understand that this is using some form of a Unicode category, but when I checked <a href="http://developer.android.com/reference/java/lang/Character.html#unicode_categories" rel="noreferrer">the documentation</a>, I found only the following "L" categories:</p>
  
  <pre><code>Lu  Uppercase letter    UPPERCASE_LETTER
  Ll  Lowercase letter    LOWERCASE_LETTER
  Lt  Titlecase letter    TITLECASE_LETTER
  Lm  Modifier letter     MODIFIER_LETTER
  Lo  Other letter        OTHER_LETTER
  </code></pre>
  
  <p>What is <code>L</code> in this context?</p>