Ways to detect that XXXX in JSON \uXXXX does not correspond to a Unicode character?
richard.wordingham at ntlworld.com
Fri May 8 15:47:46 CDT 2015
On Fri, 8 May 2015 05:08:21 +0200
Philippe Verdy <verdy_p at wanadoo.fr> wrote:
> Try by yourself, you can perfectly send JSON text containing '\uFFFF'
> (non-character) or '\uF800' (unpaired surrogate) and I've not seen
> any JSON implementation complaining about one or the other, when
> missing code unit or replaced code units and no exception as well.
Unicode Consortium standards and recommendations allow non-characters
to be sent; as far as I can make out, they are just not to be thought of
as unstandardised graphic characters.
More information about the Unicode