git diff output only changed lines

Question

If I run git diff I get this

diff --git a/README b/README
index 8d78ee4..67451cd 100644
--- a/README
+++ b/README
@@ -1,3 +1,3 @@
 dog
-cat
+fox
 bird

However I only want this

-cat
+fox

I ended up using this

git diff --color | awk '/^\033\[3[12]m/'

out of curiousity: why do you only want the changed lines without any context? If you have multiple changed lines, things will become complicated.... — eckes
– eckes, Commented Dec 21, 2013 at 10:47

thesquaregroot · Accepted Answer · 2017-12-01 14:02:16Z

4

This works on my system:

git diff --color | grep -P '\e\[3[12]m'

It uses color output to differentiate those lines. By searching for the green and red color markers it should only print the added and removed lines.

This answer may help to understand the color aspect more if you need to modify it.

edited Dec 1, 2017 at 14:02

answered Dec 21, 2013 at 7:35

thesquaregroot

1,4521 gold badge23 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Ismail Badawi · Accepted Answer · 2013-12-21 07:31:54Z

1

You can use the -U or --unified flag to specify how much context to show.

-U<n>, --unified=<n>
    Generate diffs with <n> lines of context instead of the usual three. Implies -p.

You want -U0, or --unified=0.

As far as I know git doesn't provide a way to suppress the header.

edited Dec 21, 2013 at 7:31

answered Dec 21, 2013 at 7:19

Ismail Badawi

37.4k8 gold badges90 silver badges101 bronze badges

1 Comment

user743382 Over a year ago

That's only a partial answer. For the OP's example, that will suppress two lines out of the seven asked to suppress.

score 0 · Accepted Answer · 2016-01-10 19:19:49Z

0

sed

git diff | sed '/^i/{N;N};/^[-+]/b;d'

awk

git diff | awk '/^i/{c=NR}NR>c+2&&/^[-+]/'

With both solutions:

Filter out +++ and --- lines
Filter in added and removed lines

edited Jan 10, 2016 at 19:19

answered Jan 10, 2016 at 17:48

user4427511

Collectives™ on Stack Overflow

git diff output only changed lines

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related