GNU bug report logs - #61514
30.0.50; sadistically long xml line hangs emacs

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From: Gregory Heytings <gregory <at> heytings.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 61514 <at> debbugs.gnu.org, mah <at> everybody.org
Subject: bug#61514: 30.0.50; sadistically long xml line hangs emacs
Date: Mon, 20 Feb 2023 15:56:30 +0000

>
> What am I missing?
>

I don't know... but I observe that this alone:

(with-current-buffer (get-buffer-create "*bug*")
  (insert "<id name=\"")
  (insert (make-string 250000 ?n))
  (goto-char 5)
  (looking-at "[^<>\n]+?\\(\\(?:\\(xmlns\\)\\|[_[:alpha:]][-._[:alnum:]]*\\)\\(:[_[:alpha:]][-._[:alnum:]]*\\)?\\)[ \r\t\n]*=\\(?:[ \r\t\n]*\\('[^<'&\r\n\t]*\\([&\r\n\t][^<']*\\)?'\\|\"[^<\"&\r\n\t]*\\([&\r\n\t][^<\"]*\\)?\"\\)\\(?:\\([ \r\t\n]*>\\)\\|\\(?:\\([ \r\t\n]*/\\)\\(>\\)?\\)\\|\\([ \r\t\n]+\\)\\)\\)?"))

doesn't fail, so I don't think it's this regexp which causes the overflow.

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