bug#46621: Copy line

[Richard Stallman]

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  > > Why there is still no such fundamental command as duplicating the current
  > > line?  This command slightly extends the existing copy-from-above-command:

there is nothng "fundamenal" about that operation.  It's one special case
of a general operation.  The traditional way to do it in Emacs is

  C-p C-a C-k C-k C-y C-y.

Every user who can do basic editing in Emacs knows how to do this,
and givem how (n)frequent this operation is, that's short enough.

-- 
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)