[DJSON-9] Always escape U+2028 and U+2029 to be nice to broken JSON parsers

Sun, 28 Apr 2013 21:46:10 -0500

U+2028 and U+2029 should be treated like \n and, viz, escaped even when *escape-unicode* is false.

A number of JSON parsers (such as ExtJS's) think they can eval JSON in a JS runtime to decode it. This is not true, since JS does not allow U+2028 and U+2029 unescaped in strings:

http://timelessrepo.com/json-isnt-a-javascript-subset

While this is broken behavior, it is also quite common, so escaping these characters uniformly may ease some developer pain and surprise.

Clojure JIRA

[DJSON-9] Always escape U+2028 and U+2029 to be nice to broken JSON parsers