GenericSetup export doesn't specify the encoding

According to Florent's comment about another issue, the point is that CPSSkins exporter should export in utf-8

but the exporter simply calls _extractProperties from PropertyManagerHelpers? which comes from GenericSetup?

And PropertyManageHelper explicitely encodes in utf-8 on *importation* only, as far as I can see... I don't know what it's supposed to do.

I checked that the issue's still there (copy paste from my version of less that shows hexadecimal codes for non-ascii chars):

<?xml version="1.0"?>
<object name="Default" meta_type="Theme Page">
 <property name="title">D<E9>faut</property>

And this is definitely not cpsskin's fault: {{{<?xml version="1.0"?> <object name="document" meta_type="CPS Layout">

<property name="layout_create_method"></property> <property name="layout_edit_method"></property> <property name="layout_view_method"></property> <property name="style_prefix">layout_default_</property> <property name="flexible_widgets"/> <property name="validate_values_expr"></property> <widget name="content" meta_type="Text Widget">

<property name="title">Accentu<E9></property>

}}}