在Git中，本地分支可以跟踪另一个 - 这有何用处？ [英] In Git, local branches can track one another - how is this useful?

问题描述

我听说在 Git 中，可以让本地分支A 跟踪另一个本地分行B 。

为什么有人想要这样做？

想到让本地分支跟踪另一个本地分支的事情，（1）Git提供了关于分支在追踪分支前后的更多消息，以及（2）触发钩子。

在创建分支时，一个区域Git显示更多信息。创建一个基本分支如下所示：

  $ git co -b一个master 
切换到一个新分支'A'
  

在创建跟踪分支时，看起来像：

  $ git co --track -b B master 
分支B设置为跟踪本地分支主机。 
转换为新分支'B'
  

这会在<$ c中添加以下内容$ c $ .git / config ：

  [branchB] 
 remote =。 
 merge = refs / heads / master 
  

在分支机构 和 B ，在分支<$上执行 git status -s -b 在分支 B 时，c $ c> A 显示 ## A ，它显示 ## B ... master [advance 1，behind 1] ，提供了关于分支 B 和 master 。

您可能想要本地分支跟踪另一个本地分支的另一个区域是触发钩;特别是 pre-receive ，更新，邮寄收据和 git中的更新后推 。例如，您可能会挂钩，以便在持续集成服务器上触发构建，执行一些许可证标头检查，检查空白格式错误等。

I heard that in Git, you can let a local branch A track another local branch B.

Why would someone want to do that?

解决方案

The main things that come to mind for having a local branch track another local branch are (1) more informed messages from Git regarding a branch being ahead/behind of the tracked branch and (2) trigger hooks.

One area Git displays more information is when creating a branch. Creating a basic branch looks like the following:

$ git co -b A master
Switched to a new branch 'A'

While creating a tracking branch looks like:

$ git co --track -b B master
Branch B set up to track local branch master.
Switched to a new branch 'B'

This would add the following in .git/config:

[branch "B"]
    remote = .
    merge = refs/heads/master

After committing some changes on branches A and B, executing git status -s -b on branch A displays ## A while on branch B it displays ## B...master [ahead 1, behind 1], providing some quick information regarding the relationship between branches B and master.

The other area where you might want a local branch track another local branch is to trigger hooks; in particular pre-receive, update, post-receive and post-update during a git push. You might have hooks to, for example, trigger a build on a continuous integration server, do some license header checks, check for white space format errors, etc.

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