bug#40254: 26.1; sgml-mode: Match data clobbered by buffer modification hooks

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bug#40254: 26.1; sgml-mode: Match data clobbered by buffer modification hooks

Eli Zaretskii
> From: Vladimir Alexiev <[hidden email]>
> Date: Fri, 27 Mar 2020 20:16:29 +0200
>
> When  sgml-electric-tag-pair-mode is enabled  in nxml-mode
> and I try query-replace of a tag name, the first match is replaced and
> then I get this error:
>
> Debugger entered--Lisp error: (error "Match data clobbered by buffer modification hooks")
>   replace-match("name" nil t)
>   replace-match-maybe-edit("name" nil t nil (1803 1814 #<buffer Fahrstromr├╝ckleitung-en.xml>) nil)
>   perform-replace("designation" "name" t nil nil nil nil nil nil nil nil)
>   query-replace("designation" "name" nil nil nil nil nil)
>   funcall-interactively(query-replace "designation" "name" nil nil nil nil nil)
>   call-interactively(query-replace nil nil)
>   command-execute(query-replace)

Could you please provide the file which you used in this case?  I
tried reproducing this with some random XML file I had on my system,
but the problem didn't happen.

Also, does this happen in "emacs -Q"?  If not, then some of your
customizations might be relevant as well (or even be the root cause).

Thanks.