[debbugs-tracker] bug#13032: closed (24.3.50; Request: Provide a `delete-duplicate-lines' command)

[GNU bug Tracking System]

Your message dated Tue, 04 Dec 2012 01:49:29 +0200
with message-id <address@hidden>
and subject line Re: bug#13032: 24.3.50; Request: Provide a 
`delete-duplicate-lines' command
has caused the debbugs.gnu.org bug report #13032,
regarding 24.3.50; Request: Provide a `delete-duplicate-lines' command
to be marked as done.

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-- 
13032: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13032
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> --- Begin Message ---
>
>
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> Subject: 
>
> 24.3.50; Request: Provide a `delete-duplicate-lines' command
>
>
>
>
> Date: 
>
> Thu, 29 Nov 2012 20:23:16 +0100
>
>
>
>
> Severity: wishlist
>
> Recent versions of MS-Excel and also LibreOffice's Calc have a feature
> that I find very useful: the ability of remove duplicate lines from a
> given list (range).  I think it would be worth to add such a feature
> to Emacs.
>
> That is: provide a function `delete-duplicate-lines' (or some such)
> that removes all duplicate lines in the active region and prints in
> the echo area a message like "Duplicate lines removed: <n>".
>
> TIA.
>
> PS: There has been some discussion about this in this thread:
> http://lists.gnu.org/archive/html/help-gnu-emacs/2012-11/msg00417.html.
>  Jambunathan K provided a possible implementation, but it lacks the
> message in the echo area (which I think is important).
>
>
> In GNU Emacs 24.3.50.1 (i386-mingw-nt6.1.7601)
>  of 2012-11-28 on MS-W7-DANI
> Bzr revision: 111021 address@hidden
> Windowing system distributor `Microsoft Corp.', version 6.1.7601
> Configured using:
>  `configure --with-gcc (4.7) --no-opt --enable-checking --cflags
>  -Ic:/emacs/libs/libXpm-3.5.10/include -Ic:/emacs/libs/libXpm-3.5.10/src
>  -Ic:/emacs/libs/libpng-1.2.37-lib/include -Ic:/emacs/libs/zlib-1.2.5
>  -Ic:/emacs/libs/giflib-4.1.4-1-lib/include
>  -Ic:/emacs/libs/jpeg-6b-4-lib/include
>  -Ic:/emacs/libs/tiff-3.8.2-1-lib/include
>  -Ic:/emacs/libs/libxml2-2.7.8-w32-bin/include/libxml2
>  -Ic:/emacs/libs/gnutls-3.0.9-w32-bin/include
>  -Ic:/emacs/libs/libiconv-1.9.2-1-lib/include'
>
> Important settings:
>   value of $LANG: ENU
>   locale-coding-system: cp1252
>   default enable-multibyte-characters: t
>
> -- 
> Dani Moncayo
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#13032: 24.3.50;	Request: Provide a `delete-duplicate-lines' command
>
>
>
>
> Date: 
>
> Tue, 04 Dec 2012 01:49:29 +0200
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (x86_64-pc-linux-gnu)
>
>
>
>
> >> The ADJACENT argument is an optimization that doesn't require
> >> additional memory (to store previous lines in the cache).
> >> This is necessary when the user needs to delete duplicate lines
> >> in a large sorted file.
> >
> > Ah, good point.  I guess that the optimization is twofold: in memory
> > and also in performance.  Then, IMO this should be explained in the
> > docstring, so that users know that they should use this feature when
> > running this command over a large chunk of lines.
>
> Thanks for the suggestion, I added this as well.
>
>
> --- End Message ---