.prompt.sh

prompt_git() {
    local s='';
    local branchName='';
 
    # Check if the current directory is in a Git repository.
    if [ $(git rev-parse --is-inside-work-tree &>/dev/null; echo "${?}") == '0' ]; then
 
        # check if the current directory is in .git before running git checks
        if [ "$(git rev-parse --is-inside-git-dir 2> /dev/null)" == 'false' ]; then
 
            # Ensure the index is up to date.
            git update-index --really-refresh -q &>/dev/null;
 
            # Check for uncommitted changes in the index.
            if ! $(git diff --quiet --ignore-submodules --cached); then
                s+='+';
            fi;
 
            # Check for unstaged changes.
            if ! $(git diff-files --quiet --ignore-submodules --); then
                s+='!';
            fi;
 
            # Check for untracked files.
            if [ -n "$(git ls-files --others --exclude-standard)" ]; then
                s+='?';
            fi;
 
            # Check for stashed files.
            if $(git rev-parse --verify refs/stash &>/dev/null); then
                s+='$';
            fi;
 
        fi;
 
        # Get the short symbolic ref.
        # If HEAD isn’t a symbolic ref, get the short SHA for the latest commit
        # Otherwise, just give up.
        branchName="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
           git rev-parse --short HEAD 2> /dev/null || \
           echo '(unknown)')";
 
        [ -n "${s}" ] && s=" [${s}]";
 
        echo -e "${1}${branchName}${s}";
    else
        return;
    fi;
}

PS1='\n$PWD\n$(prompt_git)$ '