Regression: DeserializeJSON() works in Lucee 5 with an empty string, returns an error in Lucee 6. https://docs.lucee.org/reference/functions/deserializejson.html (Try changing the JSON to an empty string and running it and then changing the selector in the runner on that page to Lucee 6)

""

is not valid JSON. It was wrong that it worked in Lucee 5. So this is not a regression, it's a bug fix. A string in JSON needs to actually have the quotes, so to express an empty string as a JSON string, it'd be

'""'

Similarly a non-zero-length string in JSON would be

'"my string"'

Do you see the difference?

Yep, sorry, I discovered this wasn't a regression, it was intentional. And it's not valid in Javascript, either, or Adobe CFML

It's in the RFC (https://datatracker.ietf.org/doc/html/rfc8259) and the slightly more consumable https://www.json.org/json-en.html

I found this afterwards: https://luceeserver.atlassian.net/browse/LDEV-3413

I just had an argument with chatgpt over this (because I do that sort of thing), and had to concede "oh!!! OK yeah I get it"

I mean I guess it's technically a "breaking change" but at least it wasn't accidental.

ha, I'm even watching / voted for that issue. Musta bitten me at some point. Wish my memory was better

I think it is listed as a breaking change