在预提交中退出1不会中止git commit吗? [英] exit 1 in pre-commit doesn't abort git commit?

问题描述

如果满足特定条件，我将中止git commit.

I'm aborting git commit if a certain condition is met.

检查我的提交是否具有"import pdb"在emacs/git中?

#!/bin/sh

git diff --cached --no-renames --name-status --diff-filter=AM |
  while read st file; do
    case "$file" in
    *.py)
        if git show ":$file" |
          grep -E "^[^#]*\bimport[[:space:]]+pdb\b"; then
            echo "$file: has import pdb"
            exit 1
        fi;;
    esac
done

git diff --cached --name-status --diff-filter=ACM | while read st file; do
    if grep "#[[:space:]]*@test" "$file"; then
        echo "$file: has @test"
        exit 1
    fi
done

代码运行正常，我可以看到日志"... has import pdb" 但是下一行exit 1不会中止git commit.

The code runs fine and I can see the log "... has import pdb" But the next line exit 1 won't abort the git commit.

它曾经可以正常工作，但是在某些时候停止了工作. 我在git 1.9.1上

It used to work fine, but it stopped working at some point. I'm on git 1.9.1

输出

$ GIT_TRACE=2 git commit
trace: built-in: git 'commit'
trace: run_command: '.git/hooks/pre-commit'
trace: built-in: git 'diff' '--cached' '--no-renames' '--name-status' '--diff-filter=AM'
trace: built-in: git 'show' ':momsite/apps/custom_push_notifications/utils.py'
    import pdb; pdb.set_trace()
momsite/apps/custom_push_notifications/utils.py: has import pdb
trace: built-in: git 'diff' '--cached' '--name-status' '--diff-filter=ACM'
trace: run_command: 'emacs' '/home/eugenekim/Documents/zibann/.git/COMMIT_EDITMSG'
trace: exec: 'emacs' '/home/eugenekim/Documents/zibann/.git/COMMIT_EDITMSG'

推荐答案

代码的第一部分内容类似

The first part of the code reads like

something | while ...; do ... exit 1; done

由于管道必须包含两个进程，因此外壳程序必须派生一个子外壳程序来执行您的while循环.结果，exit 1从状态为1的 subshel​​l 存在，并返回到您的父shell，该父shell会忽略返回代码.

Since a pipe necessarily involves two processes, the shell has to fork a subshell to execute your while loop. As a result, exit 1 exists from the subshell with status 1, and returns to your parent shell, which ignores the return code.

您要在done关键字后添加|| exit $?，如下所示:

You want to add a || exit $? after the done keyword, like this:

something | while ...; do ... exit 1; done || exit $?

请注意，这实际上不是Git问题，而是shell问题.

Note that this is not actually a Git question, but a shell issue.

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