如何使用 Notepad++ 正则表达式删除单个空行

Question

I want to remove just the last line in a file if it's a line containing nothing. I am using Notepad++.

Details

Say I have a text file open in Notepad++. If the last line of a file is the empty string, I want to remove it. I want to do this using Notepad++'s native find/replace functionality, with regexes.

Use Case

I often encounter this case after I copy a file from Visual Studio to Notepad++. The reason for searching how to do it with a regex is: when recording a macro in Notepad++ it's more stable to use a regex find/replace than just manually deleting a character. The manual delete might be sensitive to file length.

Answer 1

解决方案是搜索此正则表达式： \\r\\n$(?!\\r\\n)并将其替换为空字符串（空字符串）。

Answer 2

• Ctrl + H
• Find what: \\R\\z
• Replace with: LEAVE EMPTY
• CHECK Regular expression
• Replace

Explanation:

\R       # any kind of linebreak (i.e. \r, \n, \r\n)
\z       # end of file

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