Bash PROMPT_COMMAND用于在 git 更新到 1.8 之前显示 git 分支



我不久前从一些博客文章中获得了这个 bash 代码,它曾经在我的提示符中显示我当前的 git 分支和脏状态。将 git 从 1.7.11.4 更新到 1.8.5.4 后,它不再显示分支或脏状态。

这是我的提示过去的样子:

[~/some/project (master)↑⚡] ->

它显示了(当前的 git 分支),箭头表示我在遥控器前面,我应该推动,闪电表示我有未提交的更改。

更新后,它只是这个(不对存储库进行任何更改):

[~/some/project] ->

这是我.bash_profile中的代码:

        RED="[33[0;31m]"
     YELLOW="[33[0;33m]"
        GREEN="[33[0;32m]"
       BLUE="[33[0;34m]"
  LIGHT_RED="[33[1;31m]"
LIGHT_GREEN="[33[1;32m]"
      WHITE="[33[1;37m]"
 LIGHT_GRAY="[33[0;37m]"
 COLOR_NONE="[e[0m]"
function parse_git_branch {
  git rev-parse --git-dir &> /dev/null
  git_status="$(git status 2> /dev/null)"
  branch_pattern="^# On branch ([^${IFS}]*)"
  remote_pattern="# Your branch is (.*) of"
  diverge_pattern="# Your branch and (.*) have diverged"
  if [[ ! ${git_status}} =~ "working directory clean" ]]; then
    state="${RED}⚡"
  fi
  # add an else if or two here if you want to get more specific
  if [[ ${git_status} =~ ${remote_pattern} ]]; then
    if [[ ${BASH_REMATCH[1]} == "ahead" ]]; then
      remote="${YELLOW}↑"
    else
      remote="${YELLOW}↓"
    fi
  fi
  if [[ ${git_status} =~ ${diverge_pattern} ]]; then
    remote="${YELLOW}↕"
  fi
  if [[ ${git_status} =~ ${branch_pattern} ]]; then
    branch=${BASH_REMATCH[1]}
    echo " (${branch})${remote}${state}"
  fi
}
function prompt_func() {
    previous_return_value=$?;
    prompt="${TITLEBAR}${BLUE}[${YELLOW}w${GREEN}$(parse_git_branch)${BLUE}]${COLOR_NONE} "
    if test $previous_return_value -eq 0
    then
        PS1="${prompt}➔ "
    else
        PS1="${prompt}${RED}➔${COLOR_NONE} "
    fi
}
PROMPT_COMMAND=prompt_func

我不太擅长 bash,所以任何人都可以发现问题,或者有更好的解决方案吗?

我正在玩 bash 代码,但还想不通。请帮忙。

  • 苹果电脑 10.9.1
  • Git 1.8.5.4
  • i学期 2

嗯,这比我想象的要容易。事实证明,问题是在 git 1.7 中,git status 命令会回显:

# On branch master
nothing to commit (working directory clean)

前面有领先的#。现在 git 1.8 输出相同,除了没有那个#.

所以我所要做的就是改变这些行:

branch_pattern="^# On branch ([^${IFS}]*)"
remote_pattern="# Your branch is (.*) of"
diverge_pattern="# Your branch and (.*) have diverged"

自:

branch_pattern="^On branch ([^${IFS}]*)"
remote_pattern="Your branch is (.*) of"
diverge_pattern="Your branch and (.*) have diverged"

删除了#,一切恢复正常。

请注意,此模式仍然失败:

remote_pattern="Your branch is (.*) of"

新的 Git 输出如下所示:

Your branch is behind 'origin/master' by 2 commits, and can be fast-forwarded.
Your branch is ahead of 'origin/master' by 1 commit.

因此,模式应更改为:

remote_pattern="Your branch is (behind|ahead) "

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