Notepad++ 的双换行符答案

【问题标题】：Double line breaks with Notepadd++Notepad++ 的双换行符
【发布时间】：2015-07-30 15:07:07
【问题描述】：

我正在准备一些 Whatsapp 聊天日志，用于渲染统计数据和 wordcloud。然而，我的数据时不时地有双换行符，这与日志的格式相混淆，我想知道如何自动修复。

13 Mar 18:51 - nicola: mainly he's crap
13 Mar 18:52 - Sebastian K: ... you didn't really dress it up
13 Mar 18:52 - nicola: and he has no natural grace like most cats 

well no i didn't lol
13 Mar 18:52 - nicola: you saw the last video
13 Mar 18:53 - Sebastian K: Stilton jumped onto that wall effortlessly while Ched almost killed himself yea...

搜索并删除空行（容易修复）。但是，我仍然留下破坏日期和时间格式的行：

13 Mar 18:51 - nicola: mainly he's crap
13 Mar 18:52 - Sebastian K: ... you didn't really dress it up
13 Mar 18:52 - nicola: and he has no natural grace like most cats 
well no i didn't lol
13 Mar 18:52 - nicola: you saw the last video
13 Mar 18:53 - Sebastian K: Stilton jumped onto that wall effortlessly while Ched almost killed himself yea...

目标格式：

13 Mar 18:51 - nicola: mainly he's crap
13 Mar 18:52 - Sebastian K: ... you didn't really dress it up
13 Mar 18:52 - nicola: and he has no natural grace like most cats well no i didn't lol
13 Mar 18:52 - nicola: you saw the last video
13 Mar 18:53 - Sebastian K: Stilton jumped onto that wall effortlessly while Ched almost killed himself yea...

也许解决方案是利用此规则：我需要保留以下模式的换行符：

TEXT *linebreak* 
NUMBER(begging of date column)

讨厌的遵循模式：

TEXT *linebreak*
TEXT

如何使用 Notepad++ 修复它？

【问题讨论】：

标签： regex replace notepad++ line-breaks

【解决方案1】：

在搜索和替换对话框中，您可以搜索此模式

\r\n(?!\d)

启用正则表达式并替换为空。

\r\n 搜索由 CR 和 LF 组成的换行符。在 Notepad++ 中启用控制字符的显示以查看您有哪些换行符。

(?!\d) 是 negative lookahead 断言是真的，当没有数字跟随时。这适用于您的示例，但在某些极端情况下可能会失败，您可以将其扩展到模式，例如(?!\d{2}\s) 当日期始终为两位数时。

【讨论】：