1 files changed, 52 insertions, 16 deletions

diff --git a/third_party/git/combine-diff.c b/third_party/git/combine-diff.c
index 3e49f3bda84b..9228aebc16b6 100644
--- a/third_party/git/combine-diff.c
+++ b/third_party/git/combine-diff.c
@@ -10,7 +10,7 @@
 #include "log-tree.h"
 #include "refs.h"
 #include "userdiff.h"
-#include "sha1-array.h"
+#include "oid-array.h"
 #include "revision.h"
 
 static int compare_paths(const struct combine_diff_path *one,
@@ -923,14 +923,13 @@ static void dump_quoted_path(const char *head,
 
 static void show_combined_header(struct combine_diff_path *elem,
 				 int num_parent,
-				 int dense,
 				 struct rev_info *rev,
 				 const char *line_prefix,
 				 int mode_differs,
 				 int show_file_header)
 {
 	struct diff_options *opt = &rev->diffopt;
-	int abbrev = opt->flags.full_index ? GIT_SHA1_HEXSZ : DEFAULT_ABBREV;
+	int abbrev = opt->flags.full_index ? the_hash_algo->hexsz : DEFAULT_ABBREV;
 	const char *a_prefix = opt->a_prefix ? opt->a_prefix : "a/";
 	const char *b_prefix = opt->b_prefix ? opt->b_prefix : "b/";
 	const char *c_meta = diff_get_color_opt(opt, DIFF_METAINFO);
@@ -939,6 +938,7 @@ static void show_combined_header(struct combine_diff_path *elem,
 	int added = 0;
 	int deleted = 0;
 	int i;
+	int dense = rev->dense_combined_merges;
 
 	if (rev->loginfo && !rev->no_commit_id)
 		show_log(rev);
@@ -1012,7 +1012,7 @@ static void show_combined_header(struct combine_diff_path *elem,
 }
 
 static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
-			    int dense, int working_tree_file,
+			    int working_tree_file,
 			    struct rev_info *rev)
 {
 	struct diff_options *opt = &rev->diffopt;
@@ -1145,7 +1145,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
 		}
 	}
 	if (is_binary) {
-		show_combined_header(elem, num_parent, dense, rev,
+		show_combined_header(elem, num_parent, rev,
 				     line_prefix, mode_differs, 0);
 		printf("Binary files differ\n");
 		free(result);
@@ -1200,10 +1200,10 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
 				     textconv, elem->path, opt->xdl_opts);
 	}
 
-	show_hunks = make_hunks(sline, cnt, num_parent, dense);
+	show_hunks = make_hunks(sline, cnt, num_parent, rev->dense_combined_merges);
 
 	if (show_hunks || mode_differs || working_tree_file) {
-		show_combined_header(elem, num_parent, dense, rev,
+		show_combined_header(elem, num_parent, rev,
 				     line_prefix, mode_differs, 1);
 		dump_sline(sline, line_prefix, cnt, num_parent,
 			   opt->use_color, result_deleted);
@@ -1284,7 +1284,6 @@ static void show_raw_diff(struct combine_diff_path *p, int num_parent, struct re
  */
 void show_combined_diff(struct combine_diff_path *p,
 		       int num_parent,
-		       int dense,
 		       struct rev_info *rev)
 {
 	struct diff_options *opt = &rev->diffopt;
@@ -1294,7 +1293,7 @@ void show_combined_diff(struct combine_diff_path *p,
 				  DIFF_FORMAT_NAME_STATUS))
 		show_raw_diff(p, num_parent, rev);
 	else if (opt->output_format & DIFF_FORMAT_PATCH)
-		show_patch_diff(p, num_parent, dense, 1, rev);
+		show_patch_diff(p, num_parent, 1, rev);
 }
 
 static void free_combined_pair(struct diff_filepair *pair)
@@ -1451,10 +1450,45 @@ static struct combine_diff_path *find_paths_multitree(
 	return paths_head.next;
 }
 
+static int match_objfind(struct combine_diff_path *path,
+			 int num_parent,
+			 const struct oidset *set)
+{
+	int i;
+	if (oidset_contains(set, &path->oid))
+		return 1;
+	for (i = 0; i < num_parent; i++) {
+		if (oidset_contains(set, &path->parent[i].oid))
+			return 1;
+	}
+	return 0;
+}
+
+static struct combine_diff_path *combined_objfind(struct diff_options *opt,
+						  struct combine_diff_path *paths,
+						  int num_parent)
+{
+	struct combine_diff_path *ret = NULL, **tail = &ret;
+	struct combine_diff_path *p = paths;
+
+	while (p) {
+		struct combine_diff_path *next = p->next;
+
+		if (match_objfind(p, num_parent, opt->objfind)) {
+			p->next = NULL;
+			*tail = p;
+			tail = &p->next;
+		} else {
+			free(p);
+		}
+		p = next;
+	}
+
+	return ret;
+}
 
 void diff_tree_combined(const struct object_id *oid,
 			const struct oid_array *parents,
-			int dense,
 			struct rev_info *rev)
 {
 	struct diff_options *opt = &rev->diffopt;
@@ -1506,10 +1540,10 @@ void diff_tree_combined(const struct object_id *oid,
 			opt->flags.follow_renames	||
 			opt->break_opt != -1	||
 			opt->detect_rename	||
-			(opt->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)	||
+			(opt->pickaxe_opts &
+			 (DIFF_PICKAXE_KINDS_MASK & ~DIFF_PICKAXE_KIND_OBJFIND)) ||
 			opt->filter;
 
-
 	if (need_generic_pathscan) {
 		/*
 		 * NOTE generic case also handles --stat, as it computes
@@ -1523,6 +1557,9 @@ void diff_tree_combined(const struct object_id *oid,
 		int stat_opt;
 		paths = find_paths_multitree(oid, parents, &diffopts);
 
+		if (opt->pickaxe_opts & DIFF_PICKAXE_KIND_OBJFIND)
+			paths = combined_objfind(opt, paths, num_parent);
+
 		/*
 		 * show stat against the first parent even
 		 * when doing combined diff.
@@ -1581,8 +1618,7 @@ void diff_tree_combined(const struct object_id *oid,
 				printf("%s%c", diff_line_prefix(opt),
 				       opt->line_termination);
 			for (p = paths; p; p = p->next)
-				show_patch_diff(p, num_parent, dense,
-						0, rev);
+				show_patch_diff(p, num_parent, 0, rev);
 		}
 	}
 
@@ -1600,7 +1636,7 @@ void diff_tree_combined(const struct object_id *oid,
 	clear_pathspec(&diffopts.pathspec);
 }
 
-void diff_tree_combined_merge(const struct commit *commit, int dense,
+void diff_tree_combined_merge(const struct commit *commit,
 			      struct rev_info *rev)
 {
 	struct commit_list *parent = get_saved_parents(rev, commit);
@@ -1610,6 +1646,6 @@ void diff_tree_combined_merge(const struct commit *commit, int dense,
 		oid_array_append(&parents, &parent->item->object.oid);
 		parent = parent->next;
 	}
-	diff_tree_combined(&commit->object.oid, &parents, dense, rev);
+	diff_tree_combined(&commit->object.oid, &parents, rev);
 	oid_array_clear(&parents);
 }