Re: Dual content (text/plain and text/html) on xen-devel (was Re: Linux PV domU with >1 vCPU never resumes after xl save/restore)

["Jürgen Groß" <jgross@suse.com>]

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On 05.08.26 14:15, George Dunlap wrote:
> [Adding back in xen-devel, since this is relevant]
> 
> On Wed, Aug 5, 2026 at 9:15 PM Jürgen Groß <jgross@suse.com 
> <mailto:jgross@suse.com>> wrote:
> 
>     On 04.08.26 11:34, George Dunlap wrote:
>      > On Tue, Aug 4, 2026 at 6:45 PM Jürgen Groß <jgross@suse.com
>     <mailto:jgross@suse.com>
>      > <mailto:jgross@suse.com <mailto:jgross@suse.com>>> wrote:
>      >
>      >
>      >     P.S.: George, would it be possible to turn off HTML mails when sending to
>      >             xen-devel?
>      >
>      >
>      > I see both a text/plain part and a text/html part in the mail I sent;
>     isn't the
>      > presence of a text/plain version sufficient?
>      >
>      > Obviously sending patches is a different matter; but for that I'll be
>     using git-
>      > send-email.
> 
>     This is a reply to your mail using Thunderbird (which I have configured to use
>     plain text format as the default, in order to comply with most mailing lists
>     I'm using).
> 
>     I don't think Thunderbird is an exotic MUA, but please have a look how it
>     rendered your HTML reply to my original mail. I can't see clearly which part
>     was written by me originally and was cited by you in this mail.
> 
> 
> Thanks, this is what I was looking for.
> 
> Attached is the message Gmail sent.  As you can see, text/plain uses normal `>` 
> for quotes.
> 
> That makes me think that the problem is in Thunderbird. It should either take 
> the text/plan part, and reply to that as though it were the only part it had 
> received; or it should take the HTML part, and convert the quotes to text 
> properly.  Replying in HTML and then rendering it with only space indentations 
> seems like a bug.
> 
> Thunderbird certainly isn't exotic, but last time I used it it was definitely 
> under-maintained.
> 
> You're asking every person who sends an email to xen-devel to remember to take 
> an action before sending the mail (or to send *all* mail as text/plain, even if 
> it's not to xen-devel), because your MUA isn't handling the standard properly.  

And you are asking every Thunderbird user to live with bad threading or to
use a different mail client.

> Is that really reasonable?  Couldn't you tell Thunderbird to ignore html and 
> only render text/plain?

I did look for a setting controlling that, but couldn't find any. I'm already
using to send plain text only. There seems to be no obvious control to prefer
text over html in alternative bodies.

On Matrix you stated you are using the same configuration for sending mails to
xen-devel since 2006. I'm not sure this is true, as most mails I've received
from you via xen-devel have been sent from your Citrix account, and those were
all text-only.


Juergen

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