用于查找和替换完整匹配项的正则表达式（连续重复，保留分隔符）

Question

搜索时，有必要找到完全匹配的单词/短语并替换为新的：

• 如果值为空，则删除。
• 如果值不为空，则将其替换为单词/短语，同时保留分隔符。

原文：

1:
Coconut
2:
ACoconut
3:
Coconut!
4:
!CoconutA

5:
Coconut,Orange,Coconut,Pear,Coconut
6:
ACoconut,Orange,Coconut!,Pear,!CoconutA

7:
Coconut,Coconut
8:
ACoconut,Coconut!
9:
Coconut,Coconut,Coconut
10:
ACoconut,Coconut!,!CoconutA

11:
Coconut,Coconut,Orange
12:
ACoconut,!Coconut,Orange
13:
Coconut,Coconut,Coconut,Orange
14:
Coconut,ACoconut,!Coconut,Orange
15:
Orange,Coconut,Coconut,Pear
16:
Orange,Coconut,CoconutA,Pear

17:
Orange,Coconut,Coconut,Coconut,Pear
18:
Orange,ACoconut,Coconut,!Coconut,Pear
19:
Pear,Coconut,Coconut
20:
Pear,Coconut!,Coconut
21:
Pear,!Coconut,Coconut,ACoconut
22:
Pear,CoconutA,!Coconut,Coconut

预期结果：

细微差别：

1. 我使用 Notepad++ 进行搜索和替换。
2. 如果单词/短语之前和/或之后有额外的字符，则这不是完全匹配（仅忽略逗号）。
3. 如果某个单词/短语通过分隔符（在本例中为逗号）顺序重复，则该序列将被一个单词/短语替换。这个序列是从文本的开头、中间还是结尾开始并不重要。
4. 单词/短语必须完全匹配（为此，我的表达式使用 ^、逗号分隔符和 $）。替换文本时，我不必自己指定分隔符，这应该使用表达式的一部分（捕获组）来完成。

• 替换为： - 表示空白，而不是空格

  1:
  
  2:
  ACoconut
  3:
  Coconut!
  4:
  !CoconutA
  
  5:
  Orange,Pear
  6:
  ACoconut,Orange,Coconut!,Pear,!CoconutA
  
  7:
  
  8:
  ACoconut,Coconut!
  9:
  
  10:
  ACoconut,Coconut!,!CoconutA
  
  11:
  Orange
  12:
  ACoconut,!Coconut,Orange
  13:
  Orange
  14:
  ACoconut,!Coconut,Orange
  15:
  Orange,Pear
  16:
  Orange,CoconutA,Pear
  
  17:
  Orange,Pear
  18:
  Orange,ACoconut,!Coconut,Pear
  19:
  Pear
  20:
  Pear,Coconut!
  21:
  Pear,!Coconut,ACoconut
  22:
  Pear,CoconutA,!Coconut
  

• 替换为：

  Tomato

  1:
  Tomato
  2:
  ACoconut
  3:
  Coconut!
  4:
  !CoconutA
  
  5:
  Tomato,Orange,Tomato,Pear,Tomato
  6:
  ACoconut,Orange,Coconut!,Pear,!CoconutA
  
  7:
  Tomato
  8:
  ACoconut,Coconut!
  9:
  Tomato
  10:
  ACoconut,Coconut!,!CoconutA
  
  11:
  Tomato,Orange
  12:
  ACoconut,!Coconut,Orange
  13:
  Tomato,Orange
  14:
  Tomato,ACoconut,!Coconut,Orange
  15:
  Orange,Tomato,Pear
  16:
  Orange,Tomato,CoconutA,Pear
  
  17:
  Orange,Tomato,Pear
  18:
  Orange,ACoconut,Tomato,!Coconut,Pear
  19:
  Pear,Tomato
  20:
  Pear,Coconut!,Tomato
  21:
  Pear,!Coconut,Tomato,ACoconut
  22:
  Pear,CoconutA,!Coconut,Tomato
  

我的尝试（结果）：

• 查找内容：

  ^(Coconut)$|^(Coconut)(,)|(,)(Coconut)(,)|(,)(Coconut)$

  1. 替换为：

     $4$7$3$6

     1:
     
     2:
     ACoconut
     3:
     Coconut!
     4:
     !CoconutA
     
     5:
     ,Orange,,Pear,
     6:
     ACoconut,Orange,Coconut!,Pear,!CoconutA
     
     7:
     ,Coconut
     8:
     ACoconut,Coconut!
     9:
     ,Coconut,
     10:
     ACoconut,Coconut!,!CoconutA
     
     11:
     ,Coconut,Orange
     12:
     ACoconut,!Coconut,Orange
     13:
     ,Coconut,,Orange
     14:
     ,ACoconut,!Coconut,Orange
     15:
     Orange,,Coconut,Pear
     16:
     Orange,,CoconutA,Pear
     
     17:
     Orange,,Coconut,,Pear
     18:
     Orange,ACoconut,,!Coconut,Pear
     19:
     Pear,,Coconut
     20:
     Pear,Coconut!,
     21:
     Pear,!Coconut,,ACoconut
     22:
     Pear,CoconutA,!Coconut,
     

  2. 替换为：

     $4$7Tomato$3$6

     1:
     Tomato
     2:
     ACoconut
     3:
     Coconut!
     4:
     !CoconutA
     
     5:
     Tomato,Orange,Tomato,Pear,Tomato
     6:
     ACoconut,Orange,Coconut!,Pear,!CoconutA
     
     7:
     Tomato,Coconut
     8:
     ACoconut,Coconut!
     9:
     Tomato,Coconut,Tomato
     10:
     ACoconut,Coconut!,!CoconutA
     
     11:
     Tomato,Coconut,Orange
     12:
     ACoconut,!Coconut,Orange
     13:
     Tomato,Coconut,Tomato,Orange
     14:
     Tomato,ACoconut,!Coconut,Orange
     15:
     Orange,Tomato,Coconut,Pear
     16:
     Orange,Tomato,CoconutA,Pear
     
     17:
     Orange,Tomato,Coconut,Tomato,Pear
     18:
     Orange,ACoconut,Tomato,!Coconut,Pear
     19:
     Pear,Tomato,Coconut
     20:
     Pear,Coconut!,Tomato
     21:
     Pear,!Coconut,Tomato,ACoconut
     22:
     Pear,CoconutA,!Coconut,Tomato
     

Answer 1

• Ctrl+H
• 查找内容：

  ^Coconut(?:,|$)|(?:^|,)Coconut$|(,)Coconut,(?:Coconut,)*

• 替换为：

  leave empty

• 勾选 火柴盒
• 勾选环绕
• SELECT 正则表达式
• 取消勾选

  . matches newline

• 全部替换

说明：

^               # beginning of line
Coconut         # literally
(?:,|$)         # a comma or end of line
|               # OR
(?:^|,)         # beginning of line or comma
Coconut         # literally
$               # end of line
|               # OR
(,)             # group 1, a comma
Coconut,        # literally
(?:Coconut,)*   # Coconut followed bye a comma, may appear 0 or more times

更换：

(?1$1)          # if group 1 exists, print it

截图（之前）：

截图（之后）：

---

替换为

Tomato

：

• 查找内容：

  (^|,)Coconut(?:,Coconut)*(,|$)

• 替换为：

  $1Tomato$2