escaped array attributes are broken

[pavelc...@gmail.com]

I have json array (containing both apostrophe and quotes):

[{"type":"error","head":"Chyba na serveru","body":"Data truncation: Out of range value for column 'price' at row 1"}]

I want to give this array to custom element as attribute. So obvious way would be HTML code (xml escape):

messages="[{"type":"error","head":"Chyba na serveru","body":"Data truncation: Out of range value for column 'price' at row 1"}]"

But polymer won't parse this as array. If I don't escape value, it will break HTML code.

Also html escape doesn't work:

messages="[{"type":"error","head":"Chyba na serveru","body":"Data truncation: Out of range value for column 'price' at row 1"}]"

Note this works fine:
messages='[{"type":"error","head":"Chyba na serveru","body":"Data truncation: Out of range value for column price at row 1"}]'

[Rob Dodson]

Hm, yeah I'm seeing this too.I created a jsbin to reproduce it: http://jsbin.com/bucuqi/6/edit

The console logs the correct array values, you see the apostrophe, but the content doesn't display.

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[Rob Dodson]

Filed an issue here: https://github.com/Polymer/polymer-dev/issues/107