Regex 正则表达式能否返回找到匹配项的行的编号？

在文本编辑器中，我想用找到该单词的行号的编号替换给定的单词。这在正则表达式中是可能的吗？

我不知道有哪种编辑器能做到这一点，除了扩展允许任意扩展的编辑器之外

不过，您可以轻松地使用

perl

来完成这项任务

perl -i.bak -e"s/word/$./eg" file

或者如果要使用通配符

perl -MFile::DosGlob=glob -i.bak -e"BEGIN { @ARGV = map glob($_), @ARGV } s/word/$./eg" *.txt

递归、自引用组（Qtax技巧）、反向Qtax或平衡组 导言

在输入的底部添加一个整数列表的想法类似于著名的数据库黑客（与regex无关），其中一个连接到一个整数表。我最初的回答使用了@Qtax技巧。当前答案使用递归、Qtax技巧（直接或反向变化）或平衡组

是的，有可能。。。有一些警告和正则表达式欺骗。

(?sm)(?=.*?pig)(?:(?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?=[^:]+((?(1)\1):\d+)))*+.*?\Kpig(?=[^:]+(?(1)\1):(\d+))

\2

my cat
dog
my 3
my cow
my mouse

:1:2:3:4:5:6:7

(?m)(?<=\A(?<c>^(?:(?!pig)[^\r\n])*(?:\r?\n))*.*?)pig(?=[^:]+(?(c)(?<-c>:\d+)*):(\d+))

本答案中的解决方案旨在作为一种工具来演示一些正则表达式语法，而不是要实现的实际答案

在文件末尾，我们将粘贴一个数字列表，前面带有唯一分隔符。对于这个实验，附加的字符串是

：1:2:3:4:5:6:7

，这是一种类似于使用整数表的著名数据库黑客的技术

对于前两个解决方案，我们需要一个使用regex风格的编辑器，它允许递归（解决方案1）或自引用捕获组（解决方案2和3）。我想到了两个：Notepad++和EditPad Pro。对于第三种解决方案，我们需要一个支持平衡组的编辑器。这可能会限制我们使用EditPad Pro或Visual Studio 2013+

输入文件：

(?sm)(?=.*?pig)(?=((?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?:(?1)|[^:]+)(:\d+))?).*?\Kpig(?=.*?(?(2)\2):(\d+))

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # fail right away if pig isn't there

(?=               # The Recursive Structure Lives In This Lookahead
(                 # Group 1
   (?:               # skip one line 
      ^              
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    ) 
    (?:(?1)|[^:]+)   # recurse Group 1 OR match all chars that are not a :
    (:\d+)           # match digits
)?                 # End Group 
)                 # End lookahead. 
.*?\Kpig                # get to pig
(?=.*?(?(2)\2):(\d+))   # Lookahead: capture the next digits

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line 
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # for each line skipped, let Group 1 match an ever increasing portion of the numbers string at the bottom
   (?=             # lookahead
      [^:]+           # skip all chars that are not colons
      (               # start Group 1
        (?(1)\1)      # match Group 1 if set
        :\d+          # match a colon and some digits
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop everything we've matched so far
pig               # match pig (this is the match!)
(?=[^:]+(?(1)\1):(\d+))   # capture the next number to Group 2

my cat pi g
dog p ig
my pig
my cow
my mouse

:7:6:5:4:3:2:1

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line that doesn't have pig
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # Group 1 matches increasing portion of the numbers string at the bottom
   (?=             # lookahead
      .*           # get to the end of the input
      (               # start Group 1
        :\d+          # match a colon and some digits
        (?(1)\1)      # match Group 1 if set
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop match so far
pig               # match pig (this is the match!)
(?=.*(\d+)(?(1)\1))   # capture the next number to Group 2

(?xm)                # free-spacing, multi-line
(?<=                 # lookbehind
   \A                # 
   (?<c>               # skip one line that doesn't have pig
                       # The length of Group c Captures will serve as a counter
     ^                    # beginning of line
     (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
     (?:\r?\n)            # newline chars
   )                   # end skipper
   *                   # repeat skipper
   .*?                 # we're on the pig line: lazily match chars before pig
   )                # end lookbehind
pig                 # match pig: this is the match
(?=                 # lookahead
   [^:]+               # get to the digits
   (?(c)               # if Group c has been set
     (?<-c>:\d+)         # decrement c while we match a group of digits
     *                   # repeat: this will only repeat as long as the length of Group c captures > 0 
   )                   # end if Group c has been set
   :(\d+)              # Match the next digit group, capture the digits
)                    # end lokahead

假设我们正在搜索

pig

，并希望将其替换为行号

我们将使用它作为输入：

my cat
dog
my pig
my cow
my mouse

:1:2:3:4:5:6:7

---

第一个解决方案：递归 支持的语言：除了上面提到的文本编辑器（Notepad++和EditPad Pro），这个解决方案应该在使用PCRE（PHP、R、Delphi）的语言中工作，在Perl中工作，在Python中使用Matthew Barnett的

regex

模块（未测试）

递归结构存在于前瞻中，是可选的。它的工作是平衡左侧不包含

pig

的行和右侧的数字：将其视为平衡一个嵌套结构，如

{{}}

。。。除了左边是没有匹配线，右边是数字。关键是，当我们退出前瞻时，我们知道跳过了多少行

搜索：

(?sm)(?=.*?pig)(?=((?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?:(?1)|[^:]+)(:\d+))?).*?\Kpig(?=.*?(?(2)\2):(\d+))

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # fail right away if pig isn't there

(?=               # The Recursive Structure Lives In This Lookahead
(                 # Group 1
   (?:               # skip one line 
      ^              
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    ) 
    (?:(?1)|[^:]+)   # recurse Group 1 OR match all chars that are not a :
    (:\d+)           # match digits
)?                 # End Group 
)                 # End lookahead. 
.*?\Kpig                # get to pig
(?=.*?(?(2)\2):(\d+))   # Lookahead: capture the next digits

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line 
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # for each line skipped, let Group 1 match an ever increasing portion of the numbers string at the bottom
   (?=             # lookahead
      [^:]+           # skip all chars that are not colons
      (               # start Group 1
        (?(1)\1)      # match Group 1 if set
        :\d+          # match a colon and some digits
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop everything we've matched so far
pig               # match pig (this is the match!)
(?=[^:]+(?(1)\1):(\d+))   # capture the next number to Group 2

my cat pi g
dog p ig
my pig
my cow
my mouse

:7:6:5:4:3:2:1

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line that doesn't have pig
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # Group 1 matches increasing portion of the numbers string at the bottom
   (?=             # lookahead
      .*           # get to the end of the input
      (               # start Group 1
        :\d+          # match a colon and some digits
        (?(1)\1)      # match Group 1 if set
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop match so far
pig               # match pig (this is the match!)
(?=.*(\d+)(?(1)\1))   # capture the next number to Group 2

(?xm)                # free-spacing, multi-line
(?<=                 # lookbehind
   \A                # 
   (?<c>               # skip one line that doesn't have pig
                       # The length of Group c Captures will serve as a counter
     ^                    # beginning of line
     (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
     (?:\r?\n)            # newline chars
   )                   # end skipper
   *                   # repeat skipper
   .*?                 # we're on the pig line: lazily match chars before pig
   )                # end lookbehind
pig                 # match pig: this is the match
(?=                 # lookahead
   [^:]+               # get to the digits
   (?(c)               # if Group c has been set
     (?<-c>:\d+)         # decrement c while we match a group of digits
     *                   # repeat: this will only repeat as long as the length of Group c captures > 0 
   )                   # end if Group c has been set
   :(\d+)              # Match the next digit group, capture the digits
)                    # end lokahead

带有注释的自由间距版本：

(?sm)(?=.*?pig)(?=((?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?:(?1)|[^:]+)(:\d+))?).*?\Kpig(?=.*?(?(2)\2):(\d+))

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # fail right away if pig isn't there

(?=               # The Recursive Structure Lives In This Lookahead
(                 # Group 1
   (?:               # skip one line 
      ^              
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    ) 
    (?:(?1)|[^:]+)   # recurse Group 1 OR match all chars that are not a :
    (:\d+)           # match digits
)?                 # End Group 
)                 # End lookahead. 
.*?\Kpig                # get to pig
(?=.*?(?(2)\2):(\d+))   # Lookahead: capture the next digits

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line 
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # for each line skipped, let Group 1 match an ever increasing portion of the numbers string at the bottom
   (?=             # lookahead
      [^:]+           # skip all chars that are not colons
      (               # start Group 1
        (?(1)\1)      # match Group 1 if set
        :\d+          # match a colon and some digits
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop everything we've matched so far
pig               # match pig (this is the match!)
(?=[^:]+(?(1)\1):(\d+))   # capture the next number to Group 2

my cat pi g
dog p ig
my pig
my cow
my mouse

:7:6:5:4:3:2:1

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line that doesn't have pig
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # Group 1 matches increasing portion of the numbers string at the bottom
   (?=             # lookahead
      .*           # get to the end of the input
      (               # start Group 1
        :\d+          # match a colon and some digits
        (?(1)\1)      # match Group 1 if set
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop match so far
pig               # match pig (this is the match!)
(?=.*(\d+)(?(1)\1))   # capture the next number to Group 2

(?xm)                # free-spacing, multi-line
(?<=                 # lookbehind
   \A                # 
   (?<c>               # skip one line that doesn't have pig
                       # The length of Group c Captures will serve as a counter
     ^                    # beginning of line
     (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
     (?:\r?\n)            # newline chars
   )                   # end skipper
   *                   # repeat skipper
   .*?                 # we're on the pig line: lazily match chars before pig
   )                # end lookbehind
pig                 # match pig: this is the match
(?=                 # lookahead
   [^:]+               # get to the digits
   (?(c)               # if Group c has been set
     (?<-c>:\d+)         # decrement c while we match a group of digits
     *                   # repeat: this will only repeat as long as the length of Group c captures > 0 
   )                   # end if Group c has been set
   :(\d+)              # Match the next digit group, capture the digits
)                    # end lokahead

替换：

\3

在中，请参见底部的替换。您可以使用前两行上的字母（删除一个空格以生成

pig

），将第一个出现的

pig

移动到另一行，并查看这对结果的影响

---

第二种解决方案：引用自身的组（“Qtax技巧”） 支持的语言：除了上面提到的文本编辑器（Notepad++和EditPad Pro），这个解决方案应该在使用PCRE（PHP、R、Delphi）的语言中工作，在Perl中工作，在Python中使用Matthew Barnett的

regex

模块（未测试）。通过将

\K

转换为先行词，将所有格量词转换为原子组（见下面几行的.NET版本），该解决方案很容易适应.NET

搜索：

(?sm)(?=.*?pig)(?:(?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?=[^:]+((?(1)\1):\d+)))*+.*?\Kpig(?=[^:]+(?(1)\1):(\d+))

\2

my cat
dog
my 3
my cow
my mouse

:1:2:3:4:5:6:7

(?m)(?<=\A(?<c>^(?:(?!pig)[^\r\n])*(?:\r?\n))*.*?)pig(?=[^:]+(?(c)(?<-c>:\d+)*):(\d+))

.NET版本：回到未来

.NET没有

\K

。在它的位置上，我们使用“回到未来”的后视（包含在比赛前跳过的前视的后视）。此外，我们需要使用原子群而不是所有格量词

(?sm)(?<=(?=.*?pig)(?=(?>(?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?=[^:]+((?(1)\1):\d+)))*).*)pig(?=[^:]+(?(1)\1):(\d+))

替换：

(?sm)(?=.*?pig)(?:(?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?=[^:]+((?(1)\1):\d+)))*+.*?\Kpig(?=[^:]+(?(1)\1):(\d+))

\2

my cat
dog
my 3
my cow
my mouse

:1:2:3:4:5:6:7

(?m)(?<=\A(?<c>^(?:(?!pig)[^\r\n])*(?:\r?\n))*.*?)pig(?=[^:]+(?(c)(?<-c>:\d+)*):(\d+))

输出：

(?sm)(?=.*?pig)(?:(?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?=[^:]+((?(1)\1):\d+)))*+.*?\Kpig(?=[^:]+(?(1)\1):(\d+))

\2

my cat
dog
my 3
my cow
my mouse

:1:2:3:4:5:6:7

(?m)(?<=\A(?<c>^(?:(?!pig)[^\r\n])*(?:\r?\n))*.*?)pig(?=[^:]+(?(c)(?<-c>:\d+)*):(\d+))

在中，请参见底部的替换。您可以使用前两行上的字母（删除一个空格以生成

pig

），将第一个出现的

pig

移动到另一行，并查看这对结果的影响

数字分隔符的选择

在我们的示例中，数字字符串的分隔符

：

非常常见，可能发生在其他地方。我们可以发明一个

唯一的分隔符

，并稍微调整表达式。但是下面的优化更有效，让我们可以保留

：

---

第二种解决方案的优化：反向数字串 与其按顺序粘贴数字，不如按相反的顺序使用：

：7:6:5:4:3:2:1

在我们的lookaheads中，这允许我们通过一个简单的

*

，深入到输入的底部，并从那里开始回溯。因为我们知道我们在字符串的末尾，所以我们不必担心

：digits

是字符串另一部分的一部分。下面是如何做到这一点

输入：

(?sm)(?=.*?pig)(?=((?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?:(?1)|[^:]+)(:\d+))?).*?\Kpig(?=.*?(?(2)\2):(\d+))

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # fail right away if pig isn't there

(?=               # The Recursive Structure Lives In This Lookahead
(                 # Group 1
   (?:               # skip one line 
      ^              
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    ) 
    (?:(?1)|[^:]+)   # recurse Group 1 OR match all chars that are not a :
    (:\d+)           # match digits
)?                 # End Group 
)                 # End lookahead. 
.*?\Kpig                # get to pig
(?=.*?(?(2)\2):(\d+))   # Lookahead: capture the next digits

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line 
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # for each line skipped, let Group 1 match an ever increasing portion of the numbers string at the bottom
   (?=             # lookahead
      [^:]+           # skip all chars that are not colons
      (               # start Group 1
        (?(1)\1)      # match Group 1 if set
        :\d+          # match a colon and some digits
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop everything we've matched so far
pig               # match pig (this is the match!)
(?=[^:]+(?(1)\1):(\d+))   # capture the next number to Group 2

my cat pi g
dog p ig
my pig
my cow
my mouse

:7:6:5:4:3:2:1

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line that doesn't have pig
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # Group 1 matches increasing portion of the numbers string at the bottom
   (?=             # lookahead
      .*           # get to the end of the input
      (               # start Group 1
        :\d+          # match a colon and some digits
        (?(1)\1)      # match Group 1 if set
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop match so far
pig               # match pig (this is the match!)
(?=.*(\d+)(?(1)\1))   # capture the next number to Group 2

(?xm)                # free-spacing, multi-line
(?<=                 # lookbehind
   \A                # 
   (?<c>               # skip one line that doesn't have pig
                       # The length of Group c Captures will serve as a counter
     ^                    # beginning of line
     (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
     (?:\r?\n)            # newline chars
   )                   # end skipper
   *                   # repeat skipper
   .*?                 # we're on the pig line: lazily match chars before pig
   )                # end lookbehind
pig                 # match pig: this is the match
(?=                 # lookahead
   [^:]+               # get to the digits
   (?(c)               # if Group c has been set
     (?<-c>:\d+)         # decrement c while we match a group of digits
     *                   # repeat: this will only repeat as long as the length of Group c captures > 0 
   )                   # end if Group c has been set
   :(\d+)              # Match the next digit group, capture the digits
)                    # end lokahead

搜索：

(?sm)(?=.*?pig)(?=((?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?:(?1)|[^:]+)(:\d+))?).*?\Kpig(?=.*?(?(2)\2):(\d+))

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # fail right away if pig isn't there

(?=               # The Recursive Structure Lives In This Lookahead
(                 # Group 1
   (?:               # skip one line 
      ^              
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    ) 
    (?:(?1)|[^:]+)   # recurse Group 1 OR match all chars that are not a :
    (:\d+)           # match digits
)?                 # End Group 
)                 # End lookahead. 
.*?\Kpig                # get to pig
(?=.*?(?(2)\2):(\d+))   # Lookahead: capture the next digits

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line 
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # for each line skipped, let Group 1 match an ever increasing portion of the numbers string at the bottom
   (?=             # lookahead
      [^:]+           # skip all chars that are not colons
      (               # start Group 1
        (?(1)\1)      # match Group 1 if set
        :\d+          # match a colon and some digits
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop everything we've matched so far
pig               # match pig (this is the match!)
(?=[^:]+(?(1)\1):(\d+))   # capture the next number to Group 2

my cat pi g
dog p ig
my pig
my cow
my mouse

:7:6:5:4:3:2:1

(?xsm)             # free-spacing mode, multi-line
(?=.*?pig)        # lookahead: if pig is not there, fail right away to save the effort
(?:               # start counter-line-skipper (lines that don't include pig)
   (?:               # skip one line that doesn't have pig
      ^              # 
      (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
      (?:\r?\n)      # newline chars
    )   
   # Group 1 matches increasing portion of the numbers string at the bottom
   (?=             # lookahead
      .*           # get to the end of the input
      (               # start Group 1
        :\d+          # match a colon and some digits
        (?(1)\1)      # match Group 1 if set
      )               # end Group 1
   )               # end lookahead
)*+               # end counter-line-skipper: zero or more times
.*?               # match
\K                # drop match so far
pig               # match pig (this is the match!)
(?=.*(\d+)(?(1)\1))   # capture the next number to Group 2

(?xm)                # free-spacing, multi-line
(?<=                 # lookbehind
   \A                # 
   (?<c>               # skip one line that doesn't have pig
                       # The length of Group c Captures will serve as a counter
     ^                    # beginning of line
     (?:(?!pig)[^\r\n])*  # zero or more chars not followed by pig
     (?:\r?\n)            # newline chars
   )                   # end skipper
   *                   # repeat skipper
   .*?                 # we're on the pig line: lazily match chars before pig
   )                # end lookbehind
pig                 # match pig: this is the match
(?=                 # lookahead
   [^:]+               # get to the digits
   (?(c)               # if Group c has been set
     (?<-c>:\d+)         # decrement c while we match a group of digits
     *                   # repeat: this will only repeat as long as the length of Group c captures > 0 
   )                   # end if Group c has been set
   :(\d+)              # Match the next digit group, capture the digits
)                    # end lokahead

替换：

\2

请参见中的替换

第三个解决方案：平衡群体 此解决方案特定于.NET

搜索：

(?sm)(?=.*?pig)(?:(?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?=[^:]+((?(1)\1):\d+)))*+.*?\Kpig(?=[^:]+(?(1)\1):(\d+))

\2

my cat
dog
my 3
my cow
my mouse

:1:2:3:4:5:6:7

(?m)(?<=\A(?<c>^(?:(?!pig)[^\r\n])*(?:\r?\n))*.*?)pig(?=[^:]+(?(c)(?<-c>:\d+)*):(\d+))

---

（？m）（？），因为您没有指定vim中的文本编辑器：

：%s/searched\u word/\=printf（'%-4d'，line（'.'））/g

但正如有人提到的，这不是SO的问题，而是超级用户的问题；）
任何文本编辑器？其中一些根本不支持正则表达式。简单回答：不，正则表达式不替换正则表达式，也不做任何其他事情。他们只是定义了一个用于编程问题的模式。有关如何使用编辑器的问题属于“超级用户”。@Miller，因为操作是在Windows2问题上进行的。为什么你怀疑/知道windows上的OP，是基于之前的问题吗？如果OP是“代码>文件：DosGlob：<代码>