`fc-match monospace:lang=en-us` returns Chinese fonts instead of English fonts
I have installed Noto CJK fonts.
When I match en monospace fonts:
> fc-match monospace:lang=en
SourceCodePro-Regular.otf: "Source Code Pro" "Regular"
When I match en-us monospace fonts:
> fc-match monospace:lang=en-us
NotoSansSC-Regular.otf: "Noto Sans SC" "Regular"
The same behavior can be observed in Firefox. If the page has:
<html lang="en">
...
<pre>Some monospace text</pre>
It works.
However, if the page has:
<html lang="en-US">
...
<pre>Some monospace text</pre>
It will not render monospace text.