Summary

Support Emoji-related binary properties in java.util.regex.Pattern.

Problem

Emoji-related properties are introduced in java.lang.Character class, such as Character.isEmoji(int codePoint). However, these properties cannot directly be used within regular expression constructs.

Solution

Introduce 6 new binary properties Emoji, Emoji_Presentation, Emoji_Modifier, Emoji_Modifier_Base, Emoji_Component and Extended_Pictographic in java.util.regex.Pattern class, and they should be constructed with the notation \p{IsXXXX}.

Specification

Append the following 6 new binary properties in the list below binary properties in java.util.regex.Pattern class description:

@@ -636,10 +636,16 @@
   *   <li> Digit
   *   <li> Hex_Digit
   *   <li> Join_Control
   *   <li> Noncharacter_Code_Point
   *   <li> Assigned
+  *   <li> Emoji
+  *   <li> Emoji_Presentation
+  *   <li> Emoji_Modifier
+  *   <li> Emoji_Modifier_Base
+  *   <li> Emoji_Component
+  *   <li> Extended_Pictographic
   * </ul>
   * <p>
   * The following <b>Predefined Character classes</b> and <b>POSIX character classes</b>
   * are in conformance with the recommendation of <i>Annex C: Compatibility Properties</i>
   * of <a href="http://www.unicode.org/reports/tr18/"><i>Unicode Technical Standard #18: