delete double lines

delete double lines

[C.Strobl]

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hello all,
 
is there any solution for delete double lines with emacs commands (or
macros)?
 
f.g.
 
line1
line1
line2
line1
line2
 
shall be processed to
 
line1
line2
 
 
thanks and greetings from munich
christian

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Re: delete double lines

[Peter Dyballa]

Am 11.08.2006 um 12:41 schrieb <C.Strobl@dlr.de>:

> is there any solution for delete double lines with emacs commands  
> (or macros)?
>

What about shell-command-on-region? And the shell command is 'sort -u'.

--
Mit friedvollen Grüßen

   Pete

“Computers are good at following instructions, but not at reading  
your mind.”
    - D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9

AW: delete double lines

[C.Strobl]

i am working in an windows environment. i think the windows sort command has no comparable option to suppress double lines.  

-----Ursprüngliche Nachricht-----
Von: Peter_Dyballa@Web.DE [mailto:Peter_Dyballa@Web.DE] 
Gesendet: Freitag, 11. August 2006 12:57
An: Strobl, Christian
Cc: help-gnu-emacs@gnu.org
Betreff: Re: delete double lines


Am 11.08.2006 um 12:41 schrieb <C.Strobl@dlr.de>:

> is there any solution for delete double lines with emacs commands (or 
> macros)?
>

What about shell-command-on-region? And the shell command is 'sort -u'.

--
Mit friedvollen Grüßen

   Pete

"Computers are good at following instructions, but not at reading  
your mind."
    - D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9

Re: AW: delete double lines

[Eli Zaretskii]

> Date: Fri, 11 Aug 2006 13:04:08 +0200
> From: <C.Strobl@dlr.de>
> Cc: help-gnu-emacs@gnu.org
> 
> i am working in an windows environment. i think the windows sort command has no comparable option to suppress double lines.  

You can find a port of GNU sort on the GnuWin32 site.

Re: delete double lines

[Chris McMahan]

M-x sort-lines to get the same results.

If you only want to sort part of the buffer, just highlight the region
you want sorted and execute the same function.

I use this quite frequently!

- Chris

Peter Dyballa <Peter_Dyballa@Web.DE> writes:

> Am 11.08.2006 um 12:41 schrieb <C.Strobl@dlr.de>:
>
>> is there any solution for delete double lines with emacs commands
>> (or macros)?
>>
>
> What about shell-command-on-region? And the shell command is 'sort -u'.
>
> --
> Mit friedvollen Grüßen
>
>   Pete
>
> “Computers are good at following instructions, but not at reading
> your mind.”
>    - D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9

-- 
     (.   .)
  =ooO=(_)=Ooo=====================================
  Chris McMahan | first_initiallastname@one.dot.net
  =================================================

Re: delete double lines

[Chris McMahan]

Oops! sort-lines doesn't uniquify...

Cygwin has a sort function that handles the -u switch, but it means
installing the entire cygwin environment.

- Chris

Chris McMahan <first_initiallastname@one.dot.net> writes:

> M-x sort-lines to get the same results.
>
> If you only want to sort part of the buffer, just highlight the region
> you want sorted and execute the same function.
>
> I use this quite frequently!
>
> - Chris
>
> Peter Dyballa <Peter_Dyballa@Web.DE> writes:
>
>> Am 11.08.2006 um 12:41 schrieb <C.Strobl@dlr.de>:
>>
>>> is there any solution for delete double lines with emacs commands
>>> (or macros)?
>>>
>>
>> What about shell-command-on-region? And the shell command is 'sort -u'.
>>
>> --
>> Mit friedvollen Grüßen
>>
>>   Pete
>>
>> “Computers are good at following instructions, but not at reading
>> your mind.”
>>    - D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9

-- 
     (.   .)
  =ooO=(_)=Ooo=====================================
  Chris McMahan | first_initiallastname@one.dot.net
  =================================================

Re: delete double lines

[Pascal Bourguignon]

<C.Strobl@dlr.de> writes:

> hello all,
>
>  
>
> is there any solution for delete double lines with emacs commands (or macros)?
>
>  
>
> f.g.
>
>  
>
> line1
>
> line1
>
> line2
>
> line1
>
> line2
>
>  
>
> shall be processed to
>
>  
>
> line1
>
> line2
>
>  
>
>  
>
> thanks and greetings from munich

>From emacs, I would select the range of lines, then type:

C-u M-|   sort -u | sed -n -e p -e 's/.*//p'  RET


If you want a pure emacs solution:

(require 'cl)
(defun sort-unique-lines-with-double-spacing (start end)
  (interactive "r")
  (save-excursion
    (goto-char start)
    (let ((lines '()))
      (while (and (< (point) end) (re-search-forward "^\\(.*\\)$" end t))
        (push (buffer-substring (match-beginning 0) (match-end 0)) lines))
      (message "%S" lines)
      (delete-region start end)
      (dolist (line (sort (delete-duplicates lines :test (function string=))
                          (function string-lessp)))
        (insert (format "%s\n\n" line))))))


Then you can select the range of lines, 
and type M-x sort-unique-lines-with-double-spacing RET

-- 
__Pascal Bourguignon__                     http://www.informatimago.com/

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