blocks|key|843838|text|首先，您可以使用awk删除所有重复的行，保持它们的顺序。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|843839|:%25!awk+'\!_[$0]%2B%2B'|code-block|syntax|javascript|843840|如果您不确定是否有其他不想删除的重复行，则只需添加条件即可。|843841|:%25!awk+'\!(_[$0]%2B%2B+&&+/tag/+&&+/natural/+&&+/water/)'|843842|但是，用正则表达式解析像xml这样的嵌套结构不是一个好主意。你要关心他们，不要总是把事情搞砸。xmllint为您提供了文件中特定元素的列表：|843843|:!echo+"cat+//tag[@k='natural'+and+@v='water']"+%7C+xmllint+--shell+%25|843844|您可以一步一步地减少重复行。|843845|entityMap^0|8|3|0|0|0|0|1B|7|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|16|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|V|$]]

First of all, you can use <code>awk</code> to remove all duplicate lines, keeping their order.

<pre><code>:%!awk '\!_[$0]++'
</code></pre>

If you not sure if there are some other duplicate lines you don't want remove, then just add conditions.

<pre><code>:%!awk '\!(_[$0]++ &amp;&amp; /tag/ &amp;&amp; /natural/ &amp;&amp; /water/)'
</code></pre>

But, parsing a nested structure like xml with regex is a bad idea, IMHO. 
You are going to care them not to be screwed up all the time.
<code>xmllint</code> gives you a list of specific elements in the file:

<pre><code>:!echo "cat //tag[@k='natural' and @v='water']" | xmllint --shell %
</code></pre>

You can slash duplicate lines step by step.

blocks|key|843783|text|如果您不关心排序，您可以选择行，然后执行:'<,'>sort+u。它将对重复项进行排序和删除。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|843784|entityMap^0|K|C|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

You could select the lines then do a <code>:'&lt;,'&gt;sort u</code> if you don't care about the ordering. It will sort and remove duplicates.

blocks|key|486202|text|不是使用vim，而是像这样做|type|unstyled|depth|inlineStyleRanges|entityRanges|data|486203|sort+filename+%7C+uniq+-c+%7C+grep+-v+"%5E[+\t]*1[+\t]"|code-block|syntax|javascript|486204|要找出重复行是什么，然后只需使用常规搜索访问它并删除它|486205|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

instead of using vim you do something like 

<pre><code>sort filename | uniq -c | grep -v "^[ \t]*1[ \t]"
</code></pre>

to figure out what is the duplicate line and then just use normal search to visit it and delete it

blocks|key|486247|text|使用'uniq‘的答案会遇到这样的问题：'uniq’只能找到相邻的重复行，或者数据文件排序时丢失了位置信息。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|486248|如果没有重复的行，那么使用Perl+(或其他支持regex和关联数组的脚本语言)相对简单，前提是数据源不是非常庞大：|486249|#!/bin/perl+-w
#+BEWARE:+untested+code!
use+strict;
my(%25lines);
while+(<>)
{
++++print+if+!defined+$lines{$_};
++++$lines{$_}+=+1;
}|code-block|syntax|javascript|486250|但是，如果不加区别地使用它，很可能会破坏XML，因为结束标记会被合法地重复。如何避免这种情况？也许是通过一个“可以重复”行的白名单？或者可能只有带有值的打开标记的行才会受到重复消除的影响：|486251|#!/bin/perl+-w
#+BEWARE:+untested+code!
use+strict;
my(%25lines);
while+(<>)
{
++++if+(m%25%5E\s*<[%5E\s>]%2B\s[%5E\s>]%2B%25)
++++{
+++++++++print+if+!defined+$lines{$_};
+++++++++$lines{$_}+=+1;
++++}
++++else
++++{
+++++++++print;
++++}
}|486252|当然，也有(在很大程度上是有效的)论点，即使用正则表达式处理XML是被误导的。这种编码假定XML附带了许多方便的换行符；真正的XML可能不包含换行符，也可能只包含很少的换行符。|486253|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Answers using 'uniq' suffer from the problem that 'uniq' only finds adjacent duplicated lines, or the data file is sorted losing positional information.

If no line may ever be repeated, then it is relatively simple to do in Perl (or other scripting language with regex and associative array support), assuming that the data source is not incredibly humungous:

<pre><code>#!/bin/perl -w
# BEWARE: untested code!
use strict;
my(%lines);
while (&lt;&gt;)
{
 print if !defined $lines{$_};
 $lines{$_} = 1;
}
</code></pre>

However, if it is used indiscriminately, this is likely to break the XML since end tags are legitimately repeated. How to avoid this? Maybe by a whitelist of 'OK to repeat' lines? Or maybe only lines with open tags with values are subject to duplicate elimination:

<pre><code>#!/bin/perl -w
# BEWARE: untested code!
use strict;
my(%lines);
while (&lt;&gt;)
{
 if (m%^\s*&lt;[^\s&gt;]+\s[^\s&gt;]+%)
 {
 print if !defined $lines{$_};
 $lines{$_} = 1;
 }
 else
 {
 print;
 }
}
</code></pre>

Of course, there is also the (largely valid) argument that processing XML with regular expressions is misguided. This coding assumes the XML comes with lots of convenient line breaks; real XML may not contain any, or only a very few.

blocks|key|4267807|text|对于操作员，如果您有bash+4.0|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4267808|#!/bin/bash
#+use+associative+array
declare+-A+DUP
file="myfile.txt"
while+read+-r+line
do
++++if+[+-z+${DUP[$line]}+];then
++++++++DUP[$line]=1
++++++++echo+$line+>temp
++++fi
done+<+"$file"
mv+temp+"$file"|code-block|syntax|javascript|4267809|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

to the OP, if you have bash 4.0

<pre><code>#!/bin/bash
# use associative array
declare -A DUP
file="myfile.txt"
while read -r line
do
 if [ -z ${DUP[$line]} ];then
 DUP[$line]=1
 echo $line &gt;temp
 fi
done &lt; "$file"
mv temp "$file"
</code></pre>

blocks|key|4267832|text|使用python删除所有重复的行：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4267833|#!/usr/bin/env+python

import+sys
def+remove_identical(filein,+fileout)+:+
++lines+=+list()
++for+line+in+open(filein,+'r').readlines()+:+
++++if+line+not+in+lines+:+lines.append(line)
++fout+=+open(fileout,+'w')
++fout.write(''.join(lines))
++fout.close()

remove_identical(sys.argv[1],+sys.argv[2])|code-block|syntax|javascript|4267834|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

with python to remove all repeated lines:

<pre><code>#!/usr/bin/env python

import sys
def remove_identical(filein, fileout) : 
 lines = list()
 for line in open(filein, 'r').readlines() : 
 if line not in lines : lines.append(line)
 fout = open(fileout, 'w')
 fout.write(''.join(lines))
 fout.close()

remove_identical(sys.argv[1], sys.argv[2])
</code></pre>

blocks|key|4267907|text|一个简单的正则表达式是不够的。我已经实现了一个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4267908|:DeleteDuplicateLinesIgnoring|code-block|syntax|javascript|4267909|命令(以及相关命令)在我的PatternsOnText+plugin中。您甚至可以提供一个{pattern}，以便从重复数据消除中排除某些行。|offset|length|style|CODE|4267910|entityMap|0|LINK|mutability|MUTABLE|url|http://www.vim.org/scripts/script.php?script_id=4602^0|0|0|19|9|D|L|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]]|9|@$I|Z|J|10|1|11]]|A|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

A simple regular expression won't suffice. I've implemented a

<pre><code>:DeleteDuplicateLinesIgnoring
</code></pre>

command (as well as related commands) in my <a href="http://www.vim.org/scripts/script.php?script_id=4602" rel="nofollow">PatternsOnText plugin</a>. You can even supply a <code>{pattern}</code> to exclude certain lines from the de-duplication.

blocks|key|486176|text|您是否正在尝试搜索并将该行替换为空？您可以尝试使用g命令：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|486177|:%25g/search_expression_here/d|code-block|syntax|javascript|486178|末尾的d告诉它删除匹配的行。|486179|你可以在here上找到更多小贴士。|486180|entityMap|0|LINK|mutability|MUTABLE|url|http://vim.wikia.com/wiki/Uniq_-_Removing_duplicate_lines^0|P|1|0|0|3|1|0|4|4|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|13|8|@]|D|@$9|14|A|15|1|16]]|E|$]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

Are you trying to search and replace the line with nothing? You could try the <code>g</code> command instead:

<pre><code>:%g/search_expression_here/d
</code></pre>

The <code>d</code> at the end tells it to delete the lines that match.

You may find more tips <a href="http://vim.wikia.com/wiki/Uniq_-_Removing_duplicate_lines" rel="nofollow noreferrer">here</a>.

blocks|key|2802082|text|看起来bash、python和perl方法可以工作，但您已经在vim中了。那么为什么不创建一个这样的函数：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2802083|function!+RemoveDuplicateLines()
++++let+lines={}
++++let+result=[]
++++for+lineno+in+range(line('$'))
++++++++let+line=getline(lineno%2B1)
++++++++if+(!has_key(lines,+line))
++++++++++++let+lines[line]+=+1
++++++++++++let+result+%2B=+[+line+]
++++++++endif
++++endfor
++++%25d
++++call+append(0,+result)
++++d
endfunction|code-block|syntax|javascript|2802084|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

It seems like the bash, python and perl methods would work but you are already in vim. So why not create a function like:

<pre><code>function! RemoveDuplicateLines()
 let lines={}
 let result=[]
 for lineno in range(line('$'))
 let line=getline(lineno+1)
 if (!has_key(lines, line))
 let lines[line] = 1
 let result += [ line ]
 endif
 endfor
 %d
 call append(0, result)
 d
endfunction
</code></pre>

I'm trying to use VIM to remove a duplicate line in an XML file I created. (I can't recreate the file because the ID numbers will change.)

The file looks something like this:

<pre><code> &lt;tag k="natural" v="water"/&gt;
 &lt;tag k="nhd:fcode" v="39004"/&gt;
 &lt;tag k="natural" v="water"/&gt;</code></pre>

I'm trying to remove one of the duplicate k="natural" v="water" lines. When I try to use the <code>\_</code> modifier to include newlines in my regex replaces, VIM doesn't seem to find anything.

Any tips on what regex or tool to use?

Remove Duplicate Line in Vim?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试使用VIM删除我创建的XML文件中的重复行。(我无法重新创建该文件，因为ID号将会更改。)该文件如下所示： <tag k="natural" v="water"/> <tag k="nhd:fcode" v="39004"/> <tag k="natural" v="water"/>我正在尝试删除重复的“k=”“v=”“”行之一。当我尝试使用\_修饰符在正则表达式替换中

问是否删除Vim中的重复行？
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回答 9

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问是否删除Vim中的重复行？EN

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问是否删除Vim中的重复行？
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