Question

在vi（来自cygwin），当我搜索时：

:%s/something

它只是替换了像

这样的空字符串

:%s/something//  .

我已经谷歌搜索了一段时间，但没有真正提到这一点。我应该添加到.vimrc或.exrc以使其工作吗？

谢谢！

Answer 1

在vi和vim中，当您搜索模式时，只需键入/即可再次搜索。可以理解，当没有指定用于搜索的模式时，必须使用先前的模式。（但是，您可以按n查找下一次出现）

同样，当你给出一个源（模式）并在替换命令中保留替换时，它假定替换是空的，因此给定的模式被替换为没有字符（换句话说，模式被删除）< / p>

在您的情况下，您应该了解%代表整个文件（缓冲区）和s代替。要进行搜索，您只需使用/，然后使用模式即可。要替换，您将使用:s。你不必混淆搜索和替代。因此，〜/ .exrc中不需要这样的设置。另外，请记住/足以搜索整个缓冲区，而%不需要/。 /隐式搜索整个缓冲区。

您可能还想查看:g/Pattern/。通过在命令行中搜索:help global或:help :g来了解有关它的更多信息。

Answer 2

The format of a substitution in vim is as follows:

:[range]s[ubstitute]/{pattern}/{string}/[flags] [count]

In your case you have omitted the string from the substitution command and here what vim documentation stated about it:

If the {string} is omitted the substitute is done as if it's empty. Thus the matched pattern is deleted. The separator after {pattern} can also be left out then. Example: > :%s/TESTING This deletes "TESTING" from all lines, but only one per line.

For compatibility with Vi these two exceptions are allowed: "/{string}/" and "\?{string}?" do the same as "//{string}/r". "\&{string}&" does the same as "//{string}/".

E146

Instead of the '/' which surrounds the pattern and replacement string, you can use any other single-byte character, but not an alphanumeric character, '\', '"' or '|'. This is useful if you want to include a '/' in the search pattern or replacement string. Example: > :s+/+//+

In other words :%s/something and :%s;something or :%s,something have all the same behavior because the / ; and , in the last examples are considered only as SIMPLE SEPARATOR

搜索时，vi替换为空

2 个答案: