Ways to detect that XXXX in JSON \uXXXX does not correspond to a Unicode character?

Costello, Roger L. costello at mitre.org
Thu May 7 07:46:03 CDT 2015

Hi Folks,

The JSON specification says that a character may be escaped using this notation: \uXXXX    (XXXX are four hex digits)

However, not every four hex digits corresponds to a Unicode character. 

Are there tools to scan a JSON document to detect the presence of \uXXXX, where XXXX does not correspond to any Unicode character?


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