如何以编程方式确定是否存在未提交的更改?

Daniel Stutzbach in the comments git diff-index

git diff-index --quiet HEAD --

How to check if a command succeeded?

git diff-index --quiet HEAD -- || echo "untracked"; // do something about it

commented Anthony Sottile

git diff-index HEAD ...
git diff-index $(git write-tree) ...

porcelain commands
plumbing commands

Checking for a dirty index or untracked files with Git git status --porcelain

from the new " require_clean_work_tree function " which is written as we speak

require_clean_work_tree () {
    # Update the index
    git update-index -q --ignore-submodules --refresh
    err=0

    # Disallow unstaged changes in the working tree
    if ! git diff-files --quiet --ignore-submodules --
    then
        echo >&2 "cannot $1: you have unstaged changes."
        git diff-files --name-status -r --ignore-submodules -- >&2
        err=1
    fi

    # Disallow uncommitted changes in the index
    if ! git diff-index --cached --quiet HEAD --ignore-submodules --
    then
        echo >&2 "cannot $1: your index contains uncommitted changes."
        git diff-index --cached --name-status -r --ignore-submodules HEAD -- >&2
        err=1
    fi

    if [ $err = 1 ]
    then
        echo >&2 "Please commit or stash them."
        exit 1
    fi
}

[[ -z $(git status -s) ]]

git diff --exit-code git diff --quiet

git diff --quiet && git diff --cached --quiet

git diff --quiet HEAD

if [[ -z $(git status -s) ]]
then
  echo "tree is clean"
else
  echo "tree is dirty, please commit changes before running this"
  exit
fi

git diff-index --quiet HEAD --

HEAD

#!/bin/bash
set -e
echo -n "Checking if there are uncommited changes... "
trap 'echo -e "\033[0;31mFAILED\033[0m"' ERR
git diff-index --quiet HEAD --
trap - ERR
echo -e "\033[0;32mAll set!\033[0m"

# continue as planned...

git config --global alias.unstaged 'diff --name-only'
git config --global alias.staged 'diff --name-only --cached'

[[ -n "$(git unstaged)" ]] && echo unstaged files || echo NO unstaged files
[[ -n "$(git staged)" ]] && echo staged files || echo NO staged files

PATH git-has

#!/bin/bash
[[ $(git "$@" | wc -c) -ne 0 ]]

git has unstaged && echo unstaged files || echo NO unstaged files
git has staged && echo staged files || echo NO staged files

git config --global alias.untracked 'ls-files --exclude-standard --others'
git config --global alias.ignored 'ls-files --exclude-standard --others --ignored'

git.Repo(path).is_dirty(untracked_files=True)

function git_dirty {
    text=$(git status)
    changed_text="Changes to be committed"
    untracked_files="Untracked files"

    dirty=false

    if [[ ${text} = *"$changed_text"* ]];then
        dirty=true
    fi

    if [[ ${text} = *"$untracked_files"* ]];then
        dirty=true
    fi

    echo $dirty
}