UTF-8 character set missing on lists.gnu.org archive indexes

[Daniel P . Berrangé]

Hi GNU Mailman Administrators,

Looking at the the mailing list archive index pages: eg

 https://lists.gnu.org/archive/html/qemu-devel/2019-10/threads.html

The sender real names are mangled for any person (like myself) who
has non-ASCII-7 characters in their name. eg it shows

   Daniel P . Berrangé

instead of

   Daniel P. Berrangé

Some people suffer even worse:

  Kővágó, Zoltán,

vs

  Kővágó, Zoltán

Mangling their names is not very welcoming to our contributors :-(

The individual message pages display correctly which is good:

   https://lists.gnu.org/archive/html/qemu-devel/2019-10/msg06387.html

The difference is that the per-message pages have:

  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">

which is lacking in the index pages.

Can we get this problem in the index pages fixed in some manner,
either by adding a <meta> tag, or changing the web server to send
a charset.

AFAICT, for the static archive pages, the web server is only responding
with

   Content-type: text/html

which means the HTML pages default to ISO-8859-1 unless there's a
<meta> tag for content-type that gives a charset.

The dynamic mailman admin pages are already getting served with a
correct header

    Content-Type: text/html; charset=utf-8

so rather than adding  <meta> tags to the static archive pages, it
might be easiest to have the web server send this utf-8 charset
for all pages, both static archives & dynamic mailman admin pages.

Regards,
Daniel
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