[git] Git diff against a stash

How can I see the changes un-stashing will make to the current working tree? I would like to know what changes will be made before applying them!

This question is related to git git-stash

The answer is

Just in case, to compare a file in the working tree and in the stash, use the below command

git diff stash@{0} -- fileName (with path)

@Magne's answer is the only one to (very late) date that answers the most flexible/useful interpretation of the question, but its a fair bit more complicated than necessary. Rather than committing and resetting, just stash your working copy, compare, then unstash.

git stash save "temp"
git diff stash@{0} stash@{1}
git stash pop

That shows you the differences between the top of the stash stack and your working folder by temporarily making your working folder changes become the top of the stash stack (stash@{0}), moving the original top down one (stash@{1}) then comparing using the original top in the 'new set' position so you see the changes that would result from applying it on top of your current work.

"But what if I don't have any current work?" Then you are in the normal boring case. Just use @Amber's answer

git stash show

or @czerasz's answer

git diff stash@{0}

or admit that stashing and unstashing is fast and easy anyway, just unstash the changes and inspect them. If you don't want them at the moment throw them (the current index/working folder changes) away. In full that's

git stash apply
git diff
git reset
git checkout

If your working tree is dirty, you can compare it to a stash by first committing the dirty working tree, and then comparing it to the stash. Afterwards, you may undo the commit with the dirty working tree (since you might not want to have that dirty commit in your commit log).

You can also use the following approach to compare two stashes with each other (in which case you just pop one of the stashes at first).

  • Commit your dirty working tree:

    git add .
    git commit -m "Dirty commit"
  • Diff the stash with that commit:

    git diff HEAD stash@{0}
  • Then, afterwards, you may revert the commit, and put it back in the working dir:

    git reset --soft HEAD~1
    git reset .

Now you've diffed the dirty working tree with your stash, and are back to where you were initially.

One way to do this without moving anything is to take advantage of the fact that patch can read git diff's (unified diffs basically)

git stash show -p | patch -p1 --verbose --dry-run

This will show you a step-by-step preview of what patch would ordinarily do. The added benefit to this is that patch won't prevent itself from writing the patch to the working tree either, if for some reason you just really need git to shut up about commiting-before-modifying, go ahead and remove --dry-run and follow the verbose instructions.

I believe git diff <current-branchname>..stash@{0} is the most intuitive way to compare the changes between the local working tree and the most recent stash. Replace stash@{0} with the applicable stash number as needed.

Beware that git diff stash@{0} may produce misleading results. If the two histories of your stash and current branch have diverged, the diff will look like you’re adding all the new stuff in your stash and removing everything unique to the current branch.

answer based on the git book

Also, note that double dot .. and triple dot ... specify different commit comparisons, and I am referring to the double dot for this answer. See the git book for details

If the branch that your stashed changes are based on has changed in the meantime, this command may be useful:

git diff stash@{0}^!

This compares the stash against the commit it is based on.

To see the most recent stash:

git stash show -p

To see an arbitrary stash:

git stash show -p stash@{1}

Also, I use git diff to compare the stash with any branch.

You can use:

git diff stash@{0} master

To see all changes compared to branch master.

Or You can use:

git diff --name-only stash@{0} master

To easy find only changed file names.

She the list of stash

git stash list 
stash@{0}: WIP on feature/blabla: 830335224fa Name Commit
stash@{1}: WIP on feature/blabla2: 830335224fa Name Commit 2

So get the stash number and do:

You can do:

 git stash show -p stash@{1}

But if you want a diff (this is different to show the stash, that's why I write this answer. Diff consider the current code in your branch and show just show what you will apply)

You can use:

git diff stash@{0}


git diff stash@{0} <branch name>

Another interesting thing to do is:

git stash apply
git stash apply stash@{10}

This applies the stash without removing it from the list, you can git checkout . to remove those change or if you are happy git stash drop stash@{10} to remove a stash from the list.

From here I never recommend to use git stash pop and use a combination of git stash apply and git stash drop If you apply a stash in the wrong branch... well sometimes is difficult to recover your code.

FWIW This may be a bit redundant to all the other answers and is very similar to the accepted answer which is spot on; but maybe it will help someone out.

git stash show --help will give you all you should need; including stash show info.

show [<stash>]

Show the changes recorded in the stash as a diff between the stashed state and its original parent. When no is given, shows the latest one. By default, the command shows the diffstat, but it will accept any format known to git diff (e.g., git stash show -p stash@{1} to view the second most recent stash in patch form). You can use stash.showStat and/or stash.showPatch config variables to change the default behavior.

If you have tools for diff (like beyond compare)

git difftool stash HEAD

Combining what I learned in this thread and in this one, when I want to see "what is inside the stash", I first run:

git stash show stash@{0}

That will show what files were modified. Then, to get a nice visual diff in a difftool, I do:

git difftool --dir-diff stash@{0} stash@{0}^

This will display all the differences at once of the given stash against its parent.

You can configure the diff tool in ~/.gitconfig, e.g. with Meld:

    tool = meld

Depending on what you want to compare the stash with (local working tree / parent commit / head commit), there are actually several commands available, amongst which the good old git diff, and the more specific git stash show:

¦ Compare stash with ? ¦ git diff                      ¦ git stash show    ¦
¦ Local working tree   ¦ git diff stash@{0}            ¦ git stash show -l ¦
¦ Parent commit        ¦ git diff stash@{0}^ stash@{0} ¦ git stash show -p ¦
¦ HEAD commit          ¦ git diff stash@{0} HEAD       ¦   /               ¦

While git stash show looks more user friendly on first sight, git diff is actually more powerful in that it allows specifying filenames for a more focused diff. I've personally set up aliases for all of these commands in my zsh git plugin.

This works for me on git version

git diff stash HEAD