Is there something similar to diff --show-c-function in git-diff?

Question

I've been working on a file in my git repository. If I have a copy of the original git version of the file, I can run diff --show-c-function to get a comparison of the 2, files, where (in theory) it shows the whole of any function which has been changed. This is really useful for working out what I did specifically to a file, in working out the comment I'd need.

However in git-diff, this option is missing. Is there some way to make this work (or am I stuck having to get 2 copies of the file before I can commit, where the git-diff response is slightly complicated)?

twalberg · Accepted Answer · 2013-05-13 18:38:53Z

16

git help diff shows this option:

-W, --function-context
        Show whole surrounding functions of changes.

So, it looks like git diff -W should do what you want.

answered May 13, 2013 at 18:38

twalberg

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Josip Rodin · Accepted Answer · 2015-12-11 12:00:07Z

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Note that GNU diff's --show-c-function option doesn't show you the text of the C function the change (hunk) is in, it just shows you the function name in the hunk heading (after the @@ .. @@ text).

git does the same thing in its diffs by default (at least as of 1.9), and it also makes it configurable via the core.attributesfile file.

answered Dec 11, 2015 at 12:00

Josip Rodin

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2 Comments

Tomas M Over a year ago

how to configure it using core.attributes?

Josip Rodin Over a year ago

@TomasM that is explained at e.g. stackoverflow.com/questions/7344577/…

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