进入查看—>显示符号—>显示所有字符 //这招对我很管用

要找到任何类型的换行序列，请使用以下正则表达式结构:

\R

要查找和选择连续的换行序列，在\R: \R+后添加+。

确保你打开了正则表达式模式:

它匹配:

U+000DU+000A -CRLF '序列 U+ 000a -换行，lf U+ 000b -行制表，vt U+ 000c -形式馈电，ff U+ 000d -回车，cr U+0085 -下一行，nel U+2028线分隔器 U+2029段分隔符

将一个由多行组成的文档改为一行，每行组成逗号分隔的列表中的一个条目:

按Ctrl +f打开搜索/替换。 点击“替换”页签。 用“\r\n”填充“Find what”条目。 用“，”或“，”(取决于偏好)填充“Replace with”条目。 取消选中“匹配整个单词”复选框(回避逻辑的重要部分)。 检查“扩展”单选按钮。 点击“全部替换”按钮。

这些步骤转向。

foo酒吧 酒吧巴兹 巴兹foo

成:

Foo bar,bar baz,baz Foo

或者:(取决于个人喜好)

Foo bar, bar baz, baz Foo

做这个设置。菜单->视图->显示符号->取消勾选显示行结束

[\r\n]+也可以

2012年3月26日更新，notepad++ 6.0发布日期:

天哪，它现在真的有用了!!

原答案2008 (notepad++ 4.x) - 2009-2010-2011 (notepad++ 5.x)

实际上不，它似乎不能与regexp一起工作…

但是如果你有notepad++ 5。X，你可以使用“扩展”搜索模式，寻找\r\n。它能找到你所有的CRLF。

(我意识到这是与其他答案相同的答案，但同样，“扩展模式”仅适用于notepad++ 4.9, 5。X及更多)

自2009年4月以来，在notepad++站点上有一篇关于这个主题的wiki文章: 如何替换行尾，从而改变行布局。 (georgiecasey在他/她的回答中提到)

一些相关摘要包括以下搜索过程:

Simple search (Ctrl+F), Search Mode = Normal You can select an EOL in the editing window. Just move the cursor to the end of the line, and type Shift+Right Arrow. or, to select EOL with the mouse, start just at the line end and drag to the start of the next line; dragging to the right of the EOL won't work. You can manually copy the EOL and paste it into the field for Unix files (LF-only). Simple search (Ctrl+F), Search Mode = Extended The "Extended" option shows \n and \r as characters that could be matched. As with the Normal search mode, Notepad++ is looking for the exact character. Searching for \r in a UNIX-format file will not find anything, but searching for \n will. Similarly, a Macintosh-format file will contain \r but not \n. Simple search (Ctrl+F), Search Mode = Regular expression Regular expressions use the characters ^ and $ to anchor the match string to the beginning or end of the line. For instance, searching for return;$ will find occurrences of "return;" that occur with no subsequent text on that same line. The anchor characters work identically in all file formats. The '.' dot metacharacter does not match line endings. [Tested in Notepad++ 5.8.5]: a regular expression search with an explicit \r or \n does not work (contrary to the Scintilla documentation). Neither does a search on an explicit (pasted) LF, or on the (invisible) EOL characters placed in the field when an EOL is selected. Advanced search (Ctrl+R) without regexp Ctrl+M will insert something that matches newlines. They will be replaced by the replace string. I recommend this method as the most reliable, unless you really need to use regex. As an example, to remove every second newline in a double spaced file, enter Ctrl+M twice in the search string box, and once in the replace string box. Advanced search (Ctrl+R) with Regexp. Neither Ctrl+M, $ nor \r\n are matched.

同一维基还提到了十六进制编辑器的替代方案:

Type the new string at the beginning of the document. Then select to view the document in Hex mode. Select one of the new lines and hit Ctrl+H. While you have the Replace dialog box up, select on the background the new replacement string and Ctrl+C copy it to paste it in the Replace with text input. Then Replace or Replace All as you wish. Note: the character selected for new line usually appears as 0a. It may have a different value if the file is in Windows Format. In that case you can always go to Edit -> EOL Conversion -> Convert to Unix Format, and after the replacement switch it back and Edit -> EOL Conversion -> Convert to Windows Format.

这似乎是一个常见问题，提供的解决方案是:

Simple search (Ctrl+H) without regexp You can turn on View/Show End of Line or view/Show All, and select the now visible newline characters. Then when you start the command some characters matching the newline character will be pasted into the search field. Matches will be replaced by the replace string, unlike in regex mode. Note 1: If you select them with the mouse, start just before them and drag to the start of the next line. Dragging to the end of the line won't work. Note 2: You can't copy and paste them into the field yourself. Advanced search (Ctrl+R) without regexp Ctrl+M will insert something that matches newlines. They will be replaced by the replace string.