🚀 Improve comparison of binary files

[mazunki]

I often deal with binary files, and end up doing delta <(xxd file1) <(xxd file2). While this does work, I feel like it'd be nice if delta implicitly support comparison of binary data.

I don't have a preference about whether this should be implemented by something alongside --binary-handler=xxd or if it just converts it internally. Either way Binary files a/file1 and b/file2 differ is not exactly useful when debugging binary data streams, and I think it'd be nice if delta could help by telling me which byte is different.

If something like this exists already, I failed to find it by searching for binary in --help.

[th1000s]

Delta only displays what is piped into it, and unfortunately git diff --no-index bin1 bin2 (what delta calls with two file arguments) only says "Binary files a/bin1 and b/bin2 differ".

But via gitattribute, at least for tracked files, there is support to first run an external program to get a better diff in the first place: https://git-scm.com/docs/gitattributes#_generating_diff_text

It also reads the git configs, maybe that can also be made to work for the stand-alone case?