What's the best way to implement isWhitespace(char c)?

It's not included in the GWT emulation. I read an earlier post that
advises writing a java regex but is this really sensible? It gets a
bit too involved and you need an emulation of CharBuffer since that's
all native code.

Isn't it better to provide a js implementation like this?

public static native boolean isWhitespace(char c) /*-{
    return /\s/.test(c);
}-*/;

Also, there is a huge "TODO" in the Character emulation code which
talks about deferred binding and Unicode database (eek), I wonder if
some of the missing emulation couldn't be provided by taking a more
simplistic approach along the lines above?

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