bug#64596: 30.0.50; On FIXME: in src/buffer.c:1481 (force-mode-line-update)

[Richard Stallman]

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  > Which immediately creates an impression that "redisplay" and "update"
  > are referring to the same thing.
  > It would be nice the highlight the distinction rightaway there.

For me, they are two ways of thinking about the same action.
Redisplay is a little more terse and a little more technical in feel,
but concretely it means "updating the screen".

-- 
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)