Glenn Morris <rgm@gnu.org> writes:

> Sam Halliday wrote:
>
>> I just upgraded from 24.4 to 24.5 on Debian Jessie (self compiled) and
>> if I open an XML file containing the below information, and attempt to
>> M-: uncomment the last comment line in the file, Emacs eats 100%
>> CPU and I have to kill it. I can confirm that it works OK in 24.4:
>
> What does "M-: uncomment" mean? 
> Please give a complete recipe starting from emacs -Q.
>
> FWIW, works fine for me in 24.5 to mark the last comment line and use
> M-x uncomment-region.

-- 
Best regards,
Sam