bug#50713: 27.1; mm-inline-render-with-file should not (always?) use mm-with-unibyte-buffer

[David Bremner <bremner@unb.ca>]

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Lars Ingebrigtsen <larsi@gnus.org> writes:

> ⚠External message: Use caution.
>
> David Bremner <bremner@unb.ca> writes:
>
>> 1) Set mm-text-html-renderer to 'links
>> 2) Render some html like the attached partial spam containing multibyte
>> characters. Observe that the mulibyte characters are inserted as
>> individual bytes
>
> The test file you included didn't include any charset specification, so
> it's just a bunch of bytes, anyway, so there's no way for links to
> render this in any particular manner.  So I'm unable to reproduce the
> problem.
>
> Can you instead forward a complete email message that displays the
> issue?  `S D r' on one of the messages to 50713@debbugs.gnu.org should
> do the trick.
>
> (But note that spam messages are notoriously malformed, so there's often
> no correct way to display them.)

Please find attached an example mail file. It is a spam message, but it
does seem to declare utf8 charsets. It is display OK in gnus (and in
notmuch, using mm-* to process the mime parts) if mm-text-html-renderer
is 'shr, but not if it is 'links,


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Date: Sun, 27 Jun 2021 11:39:40 +0000 (UTC)
From: Frau Maria Elisabeth Schaeffler <rem@aclibresciane.it>
Reply-To: Frau Maria Elisabeth Schaeffler <mariaelisabethschaeffler022@gmail.com>
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Hallo,
Ich bin Maria Elisabeth , eine deutsche Gesch=C3=A4ftsfrau, Investorin, und=
 nachdem ich meinen Mann im Krankenhausbett verloren hatte, sagte er mir, i=
ch solle eine Spende von 1.000.000 Euro an einen gutenMenschen wie Sie ausg=
eben. Ich habe 35 Prozent meines pers=C3=B6nlichen Verm=C3=B6gens f=C3=BCr =
wohlt=C3=A4tige Zwecke verschenkt. Und ich habe auch zugesagt, den Rest von=
 35% in diesem Jahr 2021 an Einzelpersonen zu verschenken. Ich habe beschlo=
ssen, Ihnen 1000.000,00 Euro zu spenden. Wenn Sie an meiner Spende interess=
iert sind, kontaktieren Sie mich f=C3=BCr weitere Informationen.
Link lesen Sie k=C3=B6nnen hier sehen: https://en.wikipedia.org/wiki/Maria-=
Elisabeth_Schaeffler
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Herzliche Gr=C3=BC=C3=9Fe,
Frau Maria Elisabeth Schaeffler,
Vorsitzender
Supermarktkette.
E-Mail: mariaelisabethschaeffler022@gmail.com

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<html><head><style> body {height: 100%; color:#000000; font-size:12pt; font=
-family:arial, helvetica, sans-serif;}</style></head><body><div><br></div><=
div><br></div><div><br></div><div><div><br><strong>Hallo,</strong></div><di=
v><br></div><div><strong>Ich bin Maria Elisabeth , eine deutsche Gesch=C3=
=A4ftsfrau, Investorin, und nachdem ich meinen Mann im Krankenhausbett verl=
oren hatte, sagte er mir, ich solle eine Spende von 1.000.000 Euro an einen=
 gutenMenschen wie Sie ausgeben. Ich habe 35 Prozent meines pers=C3=B6nlich=
en Verm=C3=B6gens f=C3=BCr wohlt=C3=A4tige Zwecke verschenkt. Und ich habe =
auch zugesagt, den Rest von 35% in diesem Jahr 2021 an Einzelpersonen zu ve=
rschenken. Ich habe beschlossen, Ihnen 1000.000,00 Euro zu spenden. Wenn Si=
e an meiner Spende interessiert sind, kontaktieren Sie mich f=C3=BCr weiter=
e Informationen.</strong></div><div><br></div><div><strong>Link lesen Sie k=
=C3=B6nnen hier sehen: https://en.wikipedia.org/wiki/Maria-Elisabeth_Schaef=
fler</strong></div><div><br></div><div><strong>=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D</strong></div><div><br></div><div><strong>Herzlich=
e Gr=C3=BC=C3=9Fe,</strong><br><strong>Frau Maria Elisabeth Schaeffler,</st=
rong><br><strong>Vorsitzender</strong><br><strong>Supermarktkette.</strong>=
<br><strong>E-Mail: mariaelisabethschaeffler022@gmail.com</strong><br></div=
></div></body></html>
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