don't use index about vim-gitgutter

[airblade]

I'm not sure I understand completely...do you want to compare HEAD with your working tree?

If so, what's the difference between git diff-index -M HEAD and git diff HEAD?

[zander]

Short version; the diff-index skips the index.

Long version;
try this;

1. edit a (previously committed) file, deleting some lines or adding some.
2. Use 'git add ' on it.
3. Open same file agan and edit it some more.

Using 'git diff' you will see the changes you made in step 3, not the changes you made in step 1.
Using 'git diff-index -M HEAD -U3' you will see the differences accumulated of stuff you did in step 1 and AND step 3.

I think the latter (the diff-index) is more correct as thats the changes made since you last committed.

I personally think that the vast majority of git users work around the index and try to avoid things like 'git reset'/'git add' etc. Thats naturally not a scientific fact, but my experience. At minimum when I teach git to people I tell them to avoid it, as its really not easy to grasp the concept of an invisible version of your file thats in the index IMOHO.
As such I think this is great thing to avoid surprises by those users.

[airblade]

OK, I see the difference between git diff and git diff-index -M HEAD -U3. But I don't see any difference between the latter and git diff HEAD...?

The reason I prefer git diff HEAD to git diff-index -M HEAD -U3 is the former is possible right now with vim-gitgutter.

[zander]

I think you are right that there is no difference, you could make my change simpler by just using 'diff HEAD' in there.

It looks like two correct solutions to my problem that currently gitgutter doesn't show changes made before a 'git add'.
Not sure if I understand your stentence '..the former is possible right now with vim-gitgutter'. I probably missed something :)

[airblade]

I think adding this to your vimrc will do the trick:

let g:gitgutter_diff_args = 'HEAD'

[zander]

After updating my gitgutter git repo to HEAD, and adding that line, it seems to work as expected :)

lots of changes in this project!

[airblade]

Glad it's working for you!

Lots of changes, yes, though it's settling down now :)