bug#72771: 31.0.50; shr html renderer throwing "Specified window is not displaying the current buffer"

[Rob Stewart via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

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When attempting to open the attached (anonymised) message with mm-text-html-renderer set to `shr`, I get this bracktrace:

--8<---------------cut here---------------start------------->8---
Debugger entered--Lisp error: (error "Specified window is not displaying the current buffer")
  shr-indent()
  shr-fill-line()
  shr-fill-lines(13724 15455)
  shr-insert-document((html ((xmlns:o . .))))
  mm-shr((#<buffer  *mm*-655965> ("text/html" (charset . "Windows-1252")) quoted-printable nil nil nil nil nil))
  mm-inline-text-html((#<buffer  *mm*-655965> ("text/html" (charset . "Windows-1252")) quoted-printable nil nil nil nil nil))
  mm-display-inline((#<buffer  *mm*-655965> ("text/html" (charset . "Windows-1252")) quoted-printable nil nil nil nil nil))
  mm-display-part((#<buffer  *mm*-655965> ("text/html" (charset . "Windows-1252")) quoted-printable nil nil nil nil nil))
  gnus-mime-display-alternative(((#<buffer  *mm*-410985> ("text/plain" (charset . "Windows-1252")) quoted-printable nil ("inline") nil nil nil) (#<buffer  *mm*-655965> ("text/html" (charset . "Windows-1252")) quoted-printable nil nil nil nil nil)) nil nil 1)
  gnus-mime-display-part((#("multipart/alternative" ...)))
  gnus-display-mime(nil)
  #f(compiled-function (&optional ihandles) #<bytecode -0xcb4ad9361861f2a>)()
  gnus-article-prepare-display()
  mu4e--view-render-buffer((:path ...))
  mu4e-view((:path ...))
  mu4e~headers-view-handler((:path ...))
--8<---------------cut here---------------end--------------->8---

I've been asked here:

https://github.com/djcb/mu/issues/2747#issuecomment-2305245669

to report this as an Emacs bug/incompatibility.

I'm using Emacs build 3d1d4f109ed4115256a08c74eeb704259d91c9f4 (21 August 2024).

Best wishes,

--
Rob Stewart
________________________________

Founded in 1821, Heriot-Watt is a leader in ideas and solutions. With campuses and students across the entire globe we span the world, delivering innovation and educational excellence in business, engineering, design and the physical, social and life sciences. This email is generated from the Heriot-Watt University Group, which includes:

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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Haha =96 no worries, actually partly my fault as I was talking abou=
t this with Jeevani yesterday!<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">I still need to tidy one thing (Tom=92s picture), so I will fix tha=
t in version 1.01.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Thanks for spotting this.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Cheers.S.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US"><o:p>&nbsp;</o:p></span></p>
<div id=3D"mail-editor-reference-message-container">
<div>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><b><span style=3D"col=
or:black">From:
</span></b><span style=3D"color:black">ANON &lt;ANON2@example.com&gt;=
<br>
<b>Date: </b>Thursday, 22 August 2024 at 14:42<br>
<b>To: </b>ANON &lt;ANON1@example.com&gt;<br>
<b>Cc: </b>ANON &lt;ANON3@example.com&gt;, ANON &lt;ANON4@example.com&gt;<br>
<b>Subject: </b>Re: ANON SUBJECT<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:black">REDACTED.&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:black"><o:p>&nbsp;</o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:black">Cheers,<o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:black">Mike<o:p></o:p></span></=
p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"0" width=3D"100%" align=3D"center">
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<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"font-size:11.0pt;font-family:&quot=
;Calibri&quot;,sans-serif;color:black">From:</span></b><span style=3D"font-=
size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color:black"> ANON &lt;ANON1@example.com&gt;<br>
<b>Sent:</b> 22 August 2024 14:39<br>
<b>To:</b> ANONYMISED@example.com &lt;ANONYMISED2@example.com.uk&gt;<br>
<b>Cc:</b> ANON &lt;ANON5@example.com&gt;; ANON=
 &lt;ANON6@example.com&gt;<br>
<b>Subject:</b> Re: ANON SUBECT</span> <o:p></o:p=
></p>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"xmsonormal">Hi all =96 <o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">REDACTED.<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">Cheers, <o:p></o:p></p>
<p class=3D"xmsonormal">S.<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<div id=3D"x_mail-editor-reference-message-container">
<div>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"xmsonormal" style=3D"margin-bottom:12.0pt"><b><span style=3D"fo=
nt-size:12.0pt;color:black">From:
</span></b><span style=3D"font-size:12.0pt;color:black">ANON &l=
t;ANON1@example.com&gt;<br>
<b>Date: </b>Monday, 19 August 2024 at 08:00<br>
<b>To: </b>ANON@example.com &lt;ANON@example.com&gt;<br>
<b>Cc: </b>ANON &lt;ANON6@example.com&gt;, ANON=
 &lt;ANON7@example.com&gt;<br>
<b>Subject: </b>ANON Subject</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal">Hi all =96 <o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">REDACTED
<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">REDACTED.<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">REDACTED!<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">Cheers, ANON.<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"0" width=3D"100%" align=3D"center">
</div>
<p><span style=3D"font-size:8.0pt;font-family:&quot;Arial&quot;,sans-serif"=
>Founded in 1821, Heriot-Watt is a leader in ideas and solutions. With camp=
uses and students across the entire globe we span the world, delivering inn=
ovation and educational excellence in business,
 engineering, design and the physical, social and life sciences. This email=
 is generated from the Heriot-Watt University Group, which includes:<o:p></=
o:p></span></p>
<ol start=3D"1" type=3D"1">
<li class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-=
alt:auto;mso-list:l0 level1 lfo1">
<span style=3D"font-size:8.0pt;font-family:&quot;Arial&quot;,sans-serif">He=
riot-Watt University, a Scottish charity registered under number SC000278<o=
:p></o:p></span></li><li class=3D"MsoNormal" style=3D"mso-margin-top-alt:au=
to;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<span style=3D"font-size:8.0pt;font-family:&quot;Arial&quot;,sans-serif">He=
riot- Watt Services Limited (Oriam), Scotland's national performance centre=
 for sport. Heriot-Watt Services Limited is a private limited company regis=
tered is Scotland with registered number SC271030
 and registered office at Research &amp; Enterprise Services Heriot-Watt Un=
iversity, Riccarton, Edinburgh, EH14 4AS.<o:p></o:p></span></li></ol>
<p><span style=3D"font-size:8.0pt;font-family:&quot;Arial&quot;,sans-serif"=
>The contents (including any attachments) are confidential. If you are not =
the intended recipient of this e-mail, any disclosure, copying, distributio=
n or use of its contents is strictly prohibited,
 and you should please notify the sender immediately and then delete it (in=
cluding any attachments) from your system.<o:p></o:p></span></p>
</div>
</div>
</div>
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