magit: how to diff the same file between two different commits on the same branch?

Question

How can I get the diff between two commits of the same file using magit?

Directly form git one can do this. But I don\'t k

Answer 1

One way to go is to use vc as suggested by this related answer - in particular C-u C-x v =. However, this return a buffer without the possibility to (un)fold chunks.

Answer 2

In case anyone stumbles across this now, it is now possible to do this in magit (I do this from magit-log but you can probably do it from elsewhere, too):

1. Type d to open the magit-diff-popup
2. Type =f to specify the file you want to view (enter path relative to the project root dir)
3. Type r to do a diff range. You will be asked for the commit range, for example, 4abcde2..HEAD. Alternately, if you highlight the range of commits in magit-log, the range will be set for you automatically with no prompt.

This way, you end up in a magit-diff buffer complete with highlighting and code folding.

Answer 3

Building up from @cdidyk answer, it is also (now) possible to select the range of the diff with text selection to go quicker than typing the hashes of the commits.

So a quicker (and more visual) sequence could be :

1. Select the commits using text selection C-SPC (or V if you use evil-mode)
2. =f to specify the file (path relative to the project root folder)
3. d to open the diff popup
4. d to open the dwim buffer or r for diff range (They do mostly the same thing in this case, I think)