bug#42296: 27.0.91; Correct manual entry for 'concat' w.r.t. allocation [PATCH]

[Richard Stallman]

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

  > >  To obtain a string that can be mutated, use @code{copy-sequence} on the 
result.

  > Fine with me, with one correction: last sentence will sound better if
  > reworded like this:

  >   To obtain a string that you can safely mutate, use
  >   @code{copy-sequence} on the result.

Yes, it is almost always better to switch to active voice
and state the subject.

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