如何在分离的HEAD状态下找到当前的git分支 [英] How to find the current git branch in detached HEAD state

问题描述

  git branch | awk'/ ^ \ * / {print $ 2}'
 git describe --contains --all HEAD 
  

但是，当处于分离的HEAD状态时，例如在 Jenkins maven的后期构建阶段（或在Travis git fetch中），这些命令不起作用。

我目前的工作解决方案是这样的：

  git show-ref | grep $（git show-ref -s  -  HEAD）| sed's。。* / \（。* \）| \1 |'| grep -v HEAD |排序| uniq 
  

它显示任何在HEAD提示上有最后提交的分支名称。这很好，但我觉得有一个更强大的git-fu可能有一个更漂亮的解决方案吗？

解决方案

更多的瓷器方式：

  git log -n 1 --pretty =％d HEAD 
 
＃或等价地：
 git show -s --pretty =％d HEAD 
  

裁判会以格式（HEAD，master） - 如果您打算在脚本中使用它，而不是用于人类消费，则必须稍微解析它。

你也可以自己更清楚地实现它：

  git for-each-ref  - -format ='％（objectname）％（refname：short）'refs / heads | awk/ ^ $（git rev-parse HEAD）/ {print \ $ 2}
  

用获得候选人参考文献的好处，不需要额外的字符。

I can find the current git branch name by doing either of these:

git branch | awk '/^\*/ { print $2 }'
git describe --contains --all HEAD

But when in a detached HEAD state, such as in the post build phase in a Jenkins maven build (or in a Travis git fetch), these commands doesn't work.

My current working solution is this:

git show-ref | grep $(git show-ref -s -- HEAD) | sed 's|.*/\(.*\)|\1|' | grep -v HEAD | sort | uniq

It displays any branch name that has the last commit on its HEAD tip. This works fine, but I feel that someone with stronger git-fu might have a prettier solution?

解决方案

A more porcelain way:

git log -n 1 --pretty=%d HEAD

# or equivalently:
git show -s --pretty=%d HEAD

The refs will be listed in the format (HEAD, master) - you'll have to parse it a little bit if you intend to use this in scripts rather than for human consumption.

You could also implement it yourself a little more cleanly:

git for-each-ref --format='%(objectname) %(refname:short)' refs/heads | awk "/^$(git rev-parse HEAD)/ {print \$2}"

with the benefit of getting the candidate refs on separate lines, with no extra characters.

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