Wrong post URL in atom.xml when we have multiple blog languages

[SilverRainZ]

Describe the bug

All my posts directly located under path blog, but in the generated atom.xml, all post URL has a extra "zh_CN" insuffix:

<feed xml:lang="zh_CN">
<id>https://silverrainz.me/</id>
<title>银色子弹</title>
<updated>2022-04-22T12:17:50.750363+00:00</updated>
<link href="https://silverrainz.me/"/>
<link href="https://silverrainz.me/zh_CN/blog/atom.xml" rel="self"/>
<generator uri="https://ablog.readthedocs.org/" version="0.10.25">ABlog</generator>
<subtitle>Yes silver bullet here.</subtitle>
<entry>
<id>
https://silverrainz.me/zh_CN/blog/idf-reverse-writeup.html   <<<<<<<<<<<<<<<<<<<<<<< SEE EHRE
</id>
<title>IDF 实验室逆向题部分题解</title>
<updated>2015-01-02T00:00:00+00:00</updated>
<author>
<name>Shengyu Zhang</name>
</author>
....

The correct URL should be https://silverrainz.me/blog/idf-reverse-writeup.html

The full atom.xml file: https://gist.github.com/SilverRainZ/88a706344449d8f7f9fd587ac52e1e94

To Reproduce

Have multiple entries in your blog_languages confval, for example:

I have the following snippet in my conf.py:

blog_path = 'blog'
# ...
blog_languages = {
    'zh_CN': ('Chinese', None),
    'en':     ('English',  None),
}
blog_default_language = 'zh_CN'

If I changes the conf to:

blog_path = 'blog'
# ...
blog_languages = {
    'zh_CN': ('Chinese', None),
    # 'en':     ('English',  None),
}
blog_default_language = 'zh_CN'

Everything goes well.

What happened?

No response

Expected behavior

No response

Screenshots

No response

System Details

• python 3.10.4
• sphinx 4.5.0
• ablog 0.10.25

Installation method

No response

[nabobalis]

I thought I would try to fix this in #142
Changing to make sure that join() never gets a None value was simple enough but as far as I can see, the url should never have the language set in the URL. So I removed that block of code instead.

It should be in the next release of ablog.