git: Show index diff in commit message as comment

Question

When git commit open the message editor is shows a brief status, something like this:

# Please enter the commit message for your changes. Lines star         


        

Answer 1

Not enough reputation to post a reply to Alan's answer, but for Idan and anyone else I just tried it out and the diff lines in the commit message aren't explicitly commented out. However, they still don't show up in the final commit message, thank goodness.

$ git commit --verbose

In my editor:

Feeling a bit pessimistic now.

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
# On branch master
# Changes to be committed:
#   (use "git reset HEAD ..." to unstage)
#
#   modified:   README
#
diff --git a/README b/README
index af5626b..c62237e 100644
--- a/README
+++ b/README
@@ -1 +1 @@
-Hello, world!
+Goodbye, world!

(note the lack of # preceding the diff lines)

And then the actual commit message:

$ git log -n 1
commit ad21a2655ef6d8173c2df08dc9893055b26bc068
Author: Tom Jakubowski 
Date:   Thu Oct 27 19:12:54 2011 -0700

    Feeling a bit pessimistic now.

Obviously, git show will still show the diff, but that's because it always does for commits. :)