哪个shell用于git'！'别名？ [英] Which shell used for git '!' aliases?

问题描述

在执行以！？

开头的别名时， git 使用了什么默认shell？

我怀疑它是/ bin / sh，因为在别名中使用 read 时，在我的shell中获得不同的行为它是 bash ）。

  + ravi @ boxy：〜/。 dotfiles（master *％u + 2）$ grep'test ='〜/ .gitconfig 
 test =！f（）{read -n1 -pWorks？r;}; f
 + ravi @ boxy：〜/ .dotfiles（master *％u + 2）$ git test 
f（）{read -n1 -p Works？ R等}; f：1：阅读：非法选项-n 
 + ravi @ boxy：〜/ .dotfiles（master *％u + 2）[2] $ read -n1 -pWorks？ R等＃在当前shell（bash）中试试它
 Works？Y + ravi @ boxy：〜/ .dotfiles（master *％u + 2）$＃OK，那就工作了... 
 + ravi @ boxy ：〜/ .dotfiles（master *％u + 2）$ grep'sh ='〜/ .gitconfig 
 sh =！f（）{exec \$ @ \;}; f
 + ravi @ boxy：〜/ .dotfiles（master *％u + 2）$ git sh env | grep SHELL 
 SHELL = / bin / bash 
 + ravi @ boxy：〜/ .dotfiles（master *％u + 2）$＃WTF ?????????? 
 + ravi @ boxy：〜/ .dotfiles（master *％u + 2）$ type read 
 read是shell内建的
 + ravi @ boxy：〜/ .dotfiles（master * u + 2）$读取
 + ravi @ boxy：〜/ .dotfiles（master *％u + 2）[1] $＃none，那为什么shell有不同的表现呢？ 
 + ravi @ boxy：〜/ .dotfiles（master *％u + 2）[1] $ git sh bash -c read -n1 
嗯，这没关系？ 
 + ravi @ boxy：〜/ .dotfiles（master *％u + 2）$＃是的，工作。 
  

如何设置哪个shell用于处理以开头的别名！ / code>？

解决方案

如此处所述，您可以看到更多内容：

  GIT_TRACE = 1 git test 
  

解决方法是创建一个名为git-xxx的shell脚本（其第一行可以是shebang ＃！/ bin / bash ）。然后，任何 git xxx 调用都会调用该脚本（只要它位于 $ PATH 中）。

正如 OP Tom Hale 添加在评论， / bin / sh ：
$ b $ pre $ trace：exec：'/ bin / sh''-c''echo哪个shell ？'
'echo哪个shell？'





What default shell is used by git when executing an alias starting with !?

I'm suspecting it's /bin/sh, because I'm getting different behaviour when using read in an alias vs in my shell (which is bash).

+ravi@boxy:~/.dotfiles(master*% u+2)$ grep 'test =' ~/.gitconfig    
        test = "!f() { read -n1 -p "Works?" r; } ; f "
+ravi@boxy:~/.dotfiles(master*% u+2)$ git test
f() { read -n1 -p Works? r; } ; f : 1: read: Illegal option -n
+ravi@boxy:~/.dotfiles(master*% u+2)[2]$ read -n1 -p "Works?" r; # Try it in current shell (bash)
Works?Y+ravi@boxy:~/.dotfiles(master*% u+2)$ # OK, that worked...
+ravi@boxy:~/.dotfiles(master*% u+2)$ grep 'sh =' ~/.gitconfig
        sh = "!f() { exec \"$@\"; }; f"
+ravi@boxy:~/.dotfiles(master*% u+2)$ git sh env | grep SHELL
SHELL=/bin/bash
+ravi@boxy:~/.dotfiles(master*% u+2)$ # WTF??????????
+ravi@boxy:~/.dotfiles(master*% u+2)$ type read
read is a shell builtin
+ravi@boxy:~/.dotfiles(master*% u+2)$ which read
+ravi@boxy:~/.dotfiles(master*% u+2)[1]$ # none, so why is the shell behaving differently?
+ravi@boxy:~/.dotfiles(master*% u+2)[1]$ git sh bash -c read -n1
Hmm, this is ok??
+ravi@boxy:~/.dotfiles(master*% u+2)$ # Yes, that worked.

How can I set which shell is used in processsing aliases beginning with !?

解决方案

As described here, you can see more with:

GIT_TRACE=1 git test

The workaround is to create a shell script (whose first line can be a shebang #!/bin/bash) named git-xxx. Then any git xxx call would invoke that script (provided it is in the $PATH).

As the OP Tom Hale adds in the comments, /bin/sh is used:

trace: exec: '/bin/sh' '-c' 'echo Which shell?' 
'echo Which shell?'

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