[Bug 275764] `uniq -D -c` gives wrong values of repeat counts

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 27 Dec 2023 07:41:37 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275764

Daniel Tameling <tamelingdaniel@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |tamelingdaniel@gmail.com

--- Comment #1 from Daniel Tameling <tamelingdaniel@gmail.com> ---
Created attachment 247279
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=247279&action=edit
possible patch

The reason for this is that the code is designed for printing the repetition
counts in front of the previous line. But if -D is specified, it prints the
current line with the exception of the first duplicate. Thus, if one increases
the count before printing and not after, one gets a better result:

$ uniq -D -c animals.txt
   1 bear
   2 bear
   1 camel
   2 camel
   3 camel
   1 fish
   2 fish
   1 koala
   2 koala
   3 koala

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