如何复制与模式匹配的行，并在一个命令中修改第二行? [英] How can I duplicate lines matching a pattern, and modify the second line, all in one command?

问题描述

我正在尝试向 Java 类添加一个属性，使用 VIM 作为编辑器.因此，我认为我可以使用一个命令来简化所有样板代码的工作.例如:

I'm trying to add an attribute to a java class, using VIM as the editor. Therefore I thought I could use a command to ease my work with all the boilerplate code. Eg:

所有包含atributeA"的行，就像这个

All lines containing "atributeA", like this one

this.attributeA=attributeA //basic constructor

应该变成

this.attributeA=attributeA //basic constructor
this.attributeB=attributeB //basic constructor

有可能吗?

推荐答案

使解决方案像需求一样是单行的有点奇怪，因为您可以分配任何序列击键或任何功能或命令到 Vim 中的按键如果你喜欢.

Having the solution be a one-liner as a requirement seems a little odd, since you can assign any sequence of keystrokes or any function or command to a keypress in Vim if you like.

话虽如此，这种类型的东西是 Vi 的面包和黄油.试试:

That being said, this type of thing is Vi's bread and butter. Try:

:g/attributeA/ copy . | s//attributeB/g

哪里

:g/pattern/ command1 | command2 | ...

在匹配pattern的每一行上执行命令(参见:help :global)，

executes commands on each line matching pattern (see :help :global),

copy .

将与:g匹配的当前行(见:help :copy)复制到地址之后.(表示当前行), 和

copies the current line (see :help :copy) matched by :g to after the address . (meaning the current line), and

s/pattern/replacement/g

然后在当前行上执行替换(参见 :help :substitute)，即你刚刚制作的副本.末尾的 g 标志导致对行中所有匹配模式执行替换，而不仅仅是第一个.另请注意，我将搜索模式留空:为了方便起见，Vim 会记住上一个 :global 或 :substitute 命令中使用的最后一个搜索模式.

then performs a substitution on the current line (see :help :substitute), i.e. the copy you just made. The g flag at the end causes the substitution to be performed for all matching patterns in the line, not just the first. Also note that I left the search pattern empty: Vim will remember the last search pattern used in the previous :global or :substitute command as a convenience.

这篇关于如何复制与模式匹配的行，并在一个命令中修改第二行?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！