Textual diff output for unmerged paths was too eager to give condensed
combined diff. This has two problems:
(1) "diff --base/--ours/--theirs" (and "diff-files -p" with the same) is
a request to compare with the named stage. We showed "-c -p" output
instead;
(2) "diff -c" (and "diff-files -c -p") is a request to view combined diff
without condensing (otherwise the user would have explicitly asked
for --cc, not -c). We showed "--cc" output anyway.
0fe7c1d (built-in diff: assorted updates, 2006-04-29) claimed to be
careful about doing this, but its breakage was hidden because back then
"git diff" was still a shell script that did not use the codepath it
introduced fully.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
builtin-diff-files.c | 7 ++++++-
builtin-diff.c | 8 +++++++-
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/builtin-diff-files.c b/builtin-diff-files.c
index 9bf10bb..2b578c7 100644
--- a/builtin-diff-files.c
+++ b/builtin-diff-files.c
@@ -50,7 +50,12 @@ int cmd_diff_files(int argc, const char **argv, const char *prefix)
3 < rev.max_count)
usage(diff_files_usage);
- if (rev.max_count == -1 &&
+ /*
+ * "diff-files --base -p" should not combine merges because it
+ * was not asked to. "diff-files -c -p" should not densify
+ * (the user should ask with "diff-files --cc" explicitly).
+ */
+ if (rev.max_count == -1 && !rev.combine_merges &&
(rev.diffopt.output_format & DIFF_FORMAT_PATCH))
rev.combine_merges = rev.dense_combined_merges = 1;
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;
--
1.6.0.2.412.g0bc80
--
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