Paul, All 3 JSON implementations give the same result, the right one ;-) You are putting a single quote in your unencoded Smalltalk String. Embedded single quotes inside a JSON string are not escaped, only the double quote and some others (see http://www.json.org). After conversion, your string stays the same, except for the surrounding double quotes. | str| str := String streamContents: [ :s | s nextPutAll: '<prosody rate='; nextPut: $'; nextPutAll: '-20%'; nextPut: $'; nextPutAll: '>' ]. (NeoJSONWriter toString: str) = ($" asString, str, $" asString) => true So there is still only one single quote before and after the -20%, which is correct. Smalltalk just prints it as a double single quote. Maybe there is a problem on the other end ? Can you produce a curl call that works ? HTH, Sven PS: It is quite strange that you seem to be passing XML as JSON ;-) On 18 Jun 2013, at 16:33, Paul DeBruicker <pdebruic@gmail.com> wrote:

Hi -

I'm trying to get the JSON string

"<prosody rate='-20%'>"

I can't figure out how to get there using NeoJSON, the JSON package, or the JSON stuff from seaside.

Here are the results I'm getting in Pharo2

str := String streamContents: [ :s | s nextPutAll: '<prosody rate='; nextPut: $'; nextPutAll: '-20%'; nextPut: $'; nextPutAll: '>' ]

NeoJSONWriter toString: str '"<prosody rate=''-20%''>"'

"JSON package" Json render: str '"<prosody rate=''-20%''>"'

"Javascript-Core" str asJson '"<prosody rate=''-20%''>"'

When sent via a ZnClient POST the doubled single quotes are included in the JSON body and misinterpreted by the receiving API.

Does anyone have a suggestion I could try?

Thanks

Paul

-- Sven Van Caekenberghe Proudly supporting Pharo http://pharo.org http://association.pharo.org http://consortium.pharo.org