UtilsTest failed in Java7 due to character \u200B Zero width space

[AlfonZ]

UtilsTest​ passed in my Java 6u45 and failed in Java 7u25.

I have narrowed it down to character \u200B Zero width space.
In Java 6 Character.isWhitespace() and Character.isSpaceChar() return true for it, in Java 7 they return false.

Java 6's Character is based on Unicode 4.0, Java 7's on Unicode 6.0 - ​http://openjdk.java.net/projects/jdk7/features/#f497.

​Unicode 6.0 Standard Annex #44:

For example, U+200B ZERO WIDTH SPACE was originally classified as a space character (General_Category=Zs), but it was reclassified as a Format character (General_Category=Cf) to clearly distinguish it from space characters in its function as a format control for line breaking.
...
Changed the value for U+200B ZERO WIDTH SPACE from wb=Format to wb=Other.

[Don-vip]

Damn. It would mean that #8505 is not fixed with Java 7.

[Don-vip]

In 6094/josm:

fix #8918 - Handle Zero width space char since Java 7 changes related to Unicode 6.0