我之前设置了bash命令提示符，能够显示当前工作目录的最后两个目录和我的git分支（如果我在git repo中）。但是当我开始在虚拟环境中添加项目时，我的命令提示符设置停止工作了。
我已经成功让virtualenv和我的当前目录显示出来了，但是我仍然无法让我的git分支正常工作。
目前我得到的结果是： [name_of_virtualenv 如果在其中] ~/current/directory () $
我应该如何让我的命令提示符显示为这样： [name_of_virtualenv 如果在其中] ~/current/directory [master] $
bashrc文件：
# external settings
# for path in /etc/bashrc /etc/bash.bashrc /etc/bash/bashrc; do
# [[ -f "$path" ]] && . "$path"
# done
# load rvm function
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"
# source brew
if [ -f $(brew --prefix)/etc/bash_completion ]; then
. $(brew --prefix)/etc/bash_completion
fi
# history storage settings
export HISTCONTROL=ignoredups
export HISTSIZE=1000000
export HISTFILESIZE=1000000
export EDITOR='vim'
SEND_256_COLORS_TO_REMOTE=1
# bash_prompt
# The various escape codes that we can use to color our prompt.
RED="\[\033[0;31m\]"
YELLOW="\[\033[1;33m\]"
GREEN="\[\033[0;32m\]"
BLUE="\[\033[1;34m\]"
LIGHT_RED="\[\033[1;31m\]"
LIGHT_GREEN="\[\033[1;32m\]"
WHITE="\[\033[1;37m\]"
LIGHT_GRAY="\[\033[0;37m\]"
COLOR_NONE="\[\e[0m\]"
# Detect whether the current directory is a git repository.
function is_git_repository {
git branch > /dev/null 2>&1
}
# Determine the branch/state information for this git repository.
function set_git_branch {
# Capture the output of the "git status" command.
git_status="$(git status 2> /dev/null)"
# Set color based on clean/staged/dirty.
if [[ ${git_status} =~ "working directory clean" ]]; then
state="${GREEN}"
elif [[ ${git_status} =~ "Changes to be committed" ]]; then
state="${YELLOW}"
else
state="${LIGHT_RED}"
fi
# Set arrow icon based on status against remote.
remote_pattern="# Your branch is (.*) of"
if [[ ${git_status} =~ ${remote_pattern} ]]; then
if [[ ${BASH_REMATCH[1]} == "ahead" ]]; then
remote="↑"
else
remote="↓"
fi
else
remote=""
fi
diverge_pattern="# Your branch and (.*) have diverged"
if [[ ${git_status} =~ ${diverge_pattern} ]]; then
remote="↕"
fi
# Get the name of the branch.
branch_pattern="^# On branch ([^${IFS}]*)"
if [[ ${git_status} =~ ${branch_pattern} ]]; then
branch=${BASH_REMATCH[1]}
fi
# Set the final branch string.
BRANCH="${state}(${branch})${remote}${COLOR_NONE} "
}
# Return the prompt symbol to use, colorized based on the return value of the
# previous command.
function set_prompt_symbol () {
if test $1 -eq 0 ; then
PROMPT_SYMBOL="\$"
else
PROMPT_SYMBOL="${LIGHT_RED}\$${COLOR_NONE}"
fi
}
# Determine active Python virtualenv details.
function set_virtualenv () {
if test -z "$VIRTUAL_ENV" ; then
PYTHON_VIRTUALENV=""
else
PYTHON_VIRTUALENV="${BLUE}[`basename \"$VIRTUAL_ENV\"`]${COLOR_NONE} "
fi
}
# Set the full bash prompt.
function set_bash_prompt () {
# Set the PROMPT_SYMBOL variable. We do this first so we don't lose the
# return value of the last command.
set_prompt_symbol $?
# Set the PYTHON_VIRTUALENV variable.
set_virtualenv
# Set the BRANCH variable.
if is_git_repository ; then
set_git_branch
else
BRANCH=''
fi
# Set the bash prompt variable.
PS1="${PYTHON_VIRTUALENV}${YELLOW}\w${COLOR_NONE} ${BRANCH}${PROMPT_SYMBOL} "
}
# Tell bash to execute this function just before displaying its prompt.
PROMPT_COMMAND=set_bash_prompt
pwdtail () { #returns the last 2 fields of the working directory
pwd|awk -F/ '{nlast = NF -1;print $nlast"/"$NF}'
}
export PATH=/usr/local/bin:/usr/local/share/npm/bin:~/bin:$PATH
export LS_COLORS='no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.avi=01;35:*.fli=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.ogg=01;35:*.mp3=01;35:*.wav=01;35:'
export EDITOR='vim'
PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting
export WORKON_HOME=$HOME/.envs
source /usr/local/bin/virtualenvwrapper.sh