Support of language attribute through xml:lang

[Lonami]

Hi, nice project. I was wondering if it would be possible to either support user-defined attributes on the <feed> and <entry> tags, such as xml:lang="en", or maybe it would be best to have a "lang" ("language"?) field somewhere (in Feed and Entry).

The xml:lang attribute is mentioned in Introduction to Atom - About this document which links to 2.12 Language Identification. Static Site Generators such as Zola also make use of this attribute (but I'd like to move away from it), so it would be nice if this crate somehow offered the possibility of setting the document's language. In the future, we could also decide what to do with the hreflang attribute.

I took a look at both the documentation and the code, but as far as I can tell, I'm only able to define namespaces and not actually arbitrary attributes for the <feed> tag. Thank you.

[andy128k]

xml:lang is already supported by this crate in <content> tags and text fields in general.

[Lonami]

Ah, my bad, I missed that. Would it be worthwhile to put it in Feed as well, or does having it there make not much sense?

[andy128k]

It depends on the pattern of usage of the crate. If you create a feed, it makes less sense. OTOH if you consume a feed and care about language, you may miss it, so it makes a lot of sense.

While Atom spec allows to have xml:lang and xml:base on ANY element (e.g. <category>), my judgement is that it is a must to support them in a <feed> tag and less important to support in other tags.