contents (the ones I'd write with a "git-write-tree")
For example, let's say that you have worked on your working directory, updated
-some files in the index and are ready to commit. You want to see eactly
-*what* you are going to commit is without having to write a new tree
+some files in the index and are ready to commit. You want to see exactly
+*what* you are going to commit, without having to write a new tree
object and compare it that way, and to do that, you just do
- git-diff-index --cached $(cat .git/HEAD)
+ git-diff-index --cached HEAD
Example: let's say I had renamed `commit.c` to `git-commit.c`, and I had
done an "git-update-index" to make that effective in the index file.
"git-diff-files" wouldn't show anything at all, since the index file
matches my working directory. But doing a "git-diff-index" does:
- torvalds@ppc970:~/git> git-diff-index --cached $(cat .git/HEAD)
+ torvalds@ppc970:~/git> git-diff-index --cached HEAD
-100644 blob 4161aecc6700a2eb579e842af0b7f22b98443f74 commit.c
+100644 blob 4161aecc6700a2eb579e842af0b7f22b98443f74 git-commit.c
-You can trivially see that the above is a rename.
+You can see easily that the above is a rename.
In fact, "git-diff-index --cached" *should* always be entirely equivalent to
actually doing a "git-write-tree" and comparing that. Except this one is much
have not actually done a "git-update-index" on it yet - there is no
"object" associated with the new state, and you get:
- torvalds@ppc970:~/v2.6/linux> git-diff-index $(cat .git/HEAD )
+ torvalds@ppc970:~/v2.6/linux> git-diff-index HEAD
*100644->100664 blob 7476bb......->000000...... kernel/sched.c
-ie it shows that the tree has changed, and that `kernel/sched.c` has is
+i.e., it shows that the tree has changed, and that `kernel/sched.c` has is
not up-to-date and may contain new stuff. The all-zero sha1 means that to
get the real diff, you need to look at the object in the working directory
directly rather than do an object-to-object diff.
actually look at the contents of the file at all. So maybe
`kernel/sched.c` hasn't actually changed, and it's just that you
touched it. In either case, it's a note that you need to
-"git-upate-index" it to make the index be in sync.
+"git-update-index" it to make the index be in sync.
NOTE: You can have a mixture of files show up as "has been updated"
and "is still dirty in the working directory" together. You can always