[PATCH 11/26] diff-merges: new function diff_merges_set_dense_combined_if_unset()

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Call it where given functionality is needed instead of direct
checking/tweaking of diff merges related fields.

Signed-off-by: Sergey Organov <sorganov@xxxxxxxxx>
---
 builtin/diff-files.c |  5 +++--
 builtin/diff.c       |  9 +++++----
 diff-merges.c        | 11 +++++++++++
 diff-merges.h        |  2 ++
 4 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/builtin/diff-files.c b/builtin/diff-files.c
index 1e352dd8f77c..4742a4559b21 100644
--- a/builtin/diff-files.c
+++ b/builtin/diff-files.c
@@ -7,6 +7,7 @@
 #include "cache.h"
 #include "config.h"
 #include "diff.h"
+#include "diff-merges.h"
 #include "commit.h"
 #include "revision.h"
 #include "builtin.h"
@@ -69,9 +70,9 @@ int cmd_diff_files(int argc, const char **argv, const char *prefix)
 	 * 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 &&
+	if (rev.max_count == -1 &&
 	    (rev.diffopt.output_format & DIFF_FORMAT_PATCH))
-		rev.combine_merges = rev.dense_combined_merges = 1;
+		diff_merges_set_dense_combined_if_unset(&rev);
 
 	if (read_cache_preload(&rev.diffopt.pathspec) < 0) {
 		perror("read_cache_preload");
diff --git a/builtin/diff.c b/builtin/diff.c
index cd4083fed96e..2f570a3131cb 100644
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -13,6 +13,7 @@
 #include "blob.h"
 #include "tag.h"
 #include "diff.h"
+#include "diff-merges.h"
 #include "diffcore.h"
 #include "revision.h"
 #include "log-tree.h"
@@ -199,8 +200,8 @@ static int builtin_diff_combined(struct rev_info *revs,
 	if (argc > 1)
 		usage(builtin_diff_usage);
 
-	if (!revs->dense_combined_merges && !revs->combine_merges)
-		revs->dense_combined_merges = revs->combine_merges = 1;
+	diff_merges_set_dense_combined_if_unset(revs);
+
 	for (i = 1; i < ents; i++)
 		oid_array_append(&parents, &ent[i].item->oid);
 	diff_tree_combined(&ent[0].item->oid, &parents, revs);
@@ -248,9 +249,9 @@ static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv
 	 * dense one, --cc can be explicitly asked for, or just rely
 	 * on the default).
 	 */
-	if (revs->max_count == -1 && !revs->combine_merges &&
+	if (revs->max_count == -1 &&
 	    (revs->diffopt.output_format & DIFF_FORMAT_PATCH))
-		revs->combine_merges = revs->dense_combined_merges = 1;
+		diff_merges_set_dense_combined_if_unset(revs);
 
 	setup_work_tree();
 	if (read_cache_preload(&revs->diffopt.pathspec) < 0) {
diff --git a/diff-merges.c b/diff-merges.c
index 25bd9b12e667..691aabadbb32 100644
--- a/diff-merges.c
+++ b/diff-merges.c
@@ -9,6 +9,12 @@ static void suppress(struct rev_info *revs) {
 	revs->dense_combined_merges = 0;
 }
 
+static void set_dense_combined(struct rev_info *revs) {
+	revs->combine_merges = 1;
+	revs->dense_combined_merges = 1;
+}
+
+
 /*
  * Public functions. They are in the order they are called.
  */
@@ -73,6 +79,11 @@ void diff_merges_default_to_dense_combined(struct rev_info *revs) {
 	}
 }
 
+void diff_merges_set_dense_combined_if_unset(struct rev_info *revs) {
+	if (!revs->combine_merges)
+		set_dense_combined(revs);
+}
+
 void diff_merges_setup_revs(struct rev_info *revs)
 {
 	if (revs->combine_merges && revs->ignore_merges < 0)
diff --git a/diff-merges.h b/diff-merges.h
index 32720bc9b40f..ae1cc8ef9410 100644
--- a/diff-merges.h
+++ b/diff-merges.h
@@ -13,6 +13,8 @@ void diff_merges_default_to_first_parent(struct rev_info *revs);
 
 void diff_merges_default_to_dense_combined(struct rev_info *revs);
 
+void diff_merges_set_dense_combined_if_unset(struct rev_info *revs);
+
 void diff_merges_setup_revs(struct rev_info *revs);
 
 #endif
-- 
2.25.1




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