French accents not handled correctly in --write-info-json output

[Strolls]

Compare with --get-description:

$ youtube-dl --skip-download --get-description http://www.youtube.com/watch?v=7hrTwMr2xSk
Valse de Jo Privat Sa Préférée. www.myspace.com/clementreboul
$ youtube-dl --skip-download --write-info-json http://www.youtube.com/watch?v=7hrTwMr2xSk
[youtube] Setting language
[youtube] 7hrTwMr2xSk: Downloading video webpage
[youtube] 7hrTwMr2xSk: Downloading video info webpage
[youtube] 7hrTwMr2xSk: Extracting video information
[info] Video description metadata as JSON to: 7hrTwMr2xSk.flv.info.json
$ cut -f 2 -d ',' 7hrTwMr2xSk.flv.info.json 
 "description": "Valse de Jo Privat Sa Pr\u00e9f\u00e9r\u00e9e. www.myspace.com/clementreboul"
$

Note "préférée" vs. "pr\u00e9f\u00e9r\u00e9e"

[phihag]

This is completely correct, see RFC 4627 2.5, second paragraph. To parse JSON, use a proper JSON parser. If you just want the description, use --write-description.

While we could encode non-ASCII characters as UTF-8 in our JSON output, I fear doing so would raise other issues.