CPU pegs to 100%, can't do anything in emacs, C-g etc no keys work. Have to kill emacs.
Steps to reproduce:
emacs -Q emacs-flyspell-hang.xml [file contents at end of this email]
M-x flyspell-mode
Status line shows: (nXML Valid Fly)
When I cut or copy the line in the comment (see comments in attached XML)
C-k [line with <Element tag=... in the file
Then
Move to outside the XML comment (to line below <Indent4 ..>
and
C-y
Which should paste that text, but instead, it just hangs, and emacs CPU usage goes to 100%.
emacs does not respond to any keys, have to kill it.
If not using flyspell-mode, it all works fine.
Not sure if the bug system handles attachments, so sending the body of the file in this email:
File emacs-flyspell-hang.xml:
<Top version="V11">
<Indent1 tag="AGGRESSIVE" level="NONE">
<Indent2>
<Indent3>
<Indent4 name="CHEAPEST" index="0">
<!--
GNU Emacs 25.2.1
emacs -Q [this file name]
nXML mode, with M-x flyspell-mode
Status line shows: (nXML Valid Fly)
Cut or Copy this line below into the XML, then Yank C-y it
and Emacs pegs CPU to 100% on the Paste
Paste has to be in the XML above this comment,
pasting in this comment seems to work fine and causes no hang.
<Element tag="ABC">DEF</Element>
-->
</Indent4>
</Indent3>
</Indent2>
</Indent1>
</Top>