ASCII quote blocks breaks conversion to html

[ldartez]

mu4e version: 1.10.0
emacs version: 29.4

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Attempting to send any mail (whether new, forward, or reply) containing ASCII quote blocks using the ^>+ sequence fails. Quote blocks defined using quote_{begin|end}[0-9]+ seem to work fine in that there's no error and the messages get sent without issue.

Here is the tail end of a traceback from edebug:

Debugger entered--Lisp error: (wrong-type-argument listp defvaralias)
  edebug(error (wrong-type-argument listp defvaralias))
  edebug-signal(wrong-type-argument (listp defvaralias))
  warning-suppress-p((org-element org-element-parser) ((org-element-cache) (org-element-cache) (org-element-cache) (org-element-cache) defvaralias))
  display-warning((org-element org-element-parser) "‘org-element-at-point’ cannot be used in non-Org buffer #<buffer  *temp*> (fundamental-mode)")
  org-element-at-point()
  org-in-src-block-p()
  org-msg-ascii-blockquote(0 #<marker at 1 in  *temp*> #<marker at 283 in  *temp*>)
  #<subr org-msg-org-to-xml>(#("#+OPTIONS: html-postamble:nil H:5 num:nil ^:{} toc:nil author:nil email:nil tex:dvipng d:nil\n#+STARTUP: hidestars indent inlineimages\n:PROPERTIES:\n:reply-to: nil\n:attachment: nil\n:alternatives: (utf-8 html)\n:END:\n\n> bleh\n\n>> bleh2\n\n\n#+begin_signature\n\nBest,\n\nLouis\n\n#+end_signature\n" 0 92 (face org-meta-line read-only nil wrap-prefix "" line-prefix "" font-lock-fontified t fontified t) 92 93 (hard t read-only nil wrap-prefix "" line-prefix "" fontified t) 93 133 (face org-meta-line read-only nil wrap-prefix "" line-prefix "" font-lock-fontified t fontified t) 133 134 (hard t read-only nil wrap-prefix "" line-prefix "" fontified t) 134 146 (face org-drawer read-only nil wrap-prefix "" line-prefix "" font-lock-fontified t fontified t) 146 147 (hard t read-only nil wrap-prefix "" line-prefix "" fontified t) 147 157 (face org-special-keyword read-only nil wrap-prefix "" line-prefix "" fontified t) 157 158 (read-only nil wrap-prefix "" line-prefix "" fontified t) 158 161 (face org-property-value read-only nil wrap-prefix "" line-prefix "" fontified t) 161 162 (hard t read-only nil wrap-prefix "" line-prefix "" fontified t) 162 174 (face org-special-keyword read-only nil wrap-prefix "" line-prefix "" fontified t) 174 175 (read-only nil wrap-prefix "" line-prefix "" fontified t) 175 178 (face org-property-value read-only nil wrap-prefix "" line-prefix "" fontified t) 178 179 (hard t read-only nil wrap-prefix "" line-prefix "" fontified t) 179 193 (face org-special-keyword read-only nil wrap-prefix "" line-prefix "" fontified t) 193 194 (read-only nil wrap-prefix "" line-prefix "" fontified t) ...) "/path/redacted/Downloads")