format-patch: add --interdiff option to embed diff in cover letter
[git] / interdiff.c
1 #include "cache.h"
2 #include "commit.h"
3 #include "revision.h"
4 #include "interdiff.h"
5
6 void show_interdiff(struct rev_info *rev)
7 {
8         struct diff_options opts;
9
10         memcpy(&opts, &rev->diffopt, sizeof(opts));
11         opts.output_format = DIFF_FORMAT_PATCH;
12         diff_setup_done(&opts);
13
14         diff_tree_oid(rev->idiff_oid1, rev->idiff_oid2, "", &opts);
15         diffcore_std(&opts);
16         diff_flush(&opts);
17 }