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-rw-r--r--builtin-diff.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/builtin-diff.c b/builtin-diff.c
index 037c303..d5fe775 100644
--- a/builtin-diff.c
+++ b/builtin-diff.c
@@ -223,7 +223,13 @@ static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv
argv++; argc--;
}
- if (revs->max_count == -1 &&
+ /*
+ * "diff --base" should not combine merges because it was not
+ * asked to. "diff -c" should not densify (if the user wants
+ * dense one, --cc can be explicitly asked for, or just rely
+ * on the default).
+ */
+ if (revs->max_count == -1 && !revs->combine_merges &&
(revs->diffopt.output_format & DIFF_FORMAT_PATCH))
revs->combine_merges = revs->dense_combined_merges = 1;