bug#66390: `man' allows to inject arbitrary shell code

[Richard Stallman]

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  > We don't retrofit fixes into old branches of Emacs that are no longer
  > developed; 

In general, that is a reasonable policy -- but maybe a serious
security problem, which this eesms to be, calls for special treatment.

               we leave that to the distros (who maintain old Emacs
  > versions for many more years than we do).

That might be sufficient for the problem, but we should think
carefully about whether it _is_ sufficient.

-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)