merge: recursive uses larger conflict markers

Git uses longer conflict markers in the recursive merge base - two more
than the default (thus, 9 character long conflict markers).  This allows
users to tell the difference between the recursive merge conflicts and
conflicts between the ours and theirs branches.

This was introduced in git d694a17986a28bbc19e2a6c32404ca24572e400f.

Update our tests to expect this as well.

src/merge.c

@@ -2075,6 +2075,7 @@ int git_merge__iterators(
 		file_opts.our_label = "Temporary merge branch 1";
 		file_opts.their_label = "Temporary merge branch 2";
 		file_opts.flags |= GIT_MERGE_FILE_FAVOR__CONFLICTED;
+		file_opts.marker_size = GIT_MERGE_CONFLICT_MARKER_SIZE + 2;
 	}
 
 	diff_list = git_merge_diff_list__alloc(repo);

tests/merge/conflict_data.h

@@ -76,13 +76,13 @@
 	"<<<<<<< HEAD\n" \
 	"put into a pot three quarts of water, three onions cut small, one\n" \
 	"||||||| merged common ancestors\n" \
-	"<<<<<<< Temporary merge branch 1\n" \
+	"<<<<<<<<< Temporary merge branch 1\n" \
 	"Put into a pot three quarts of water, THREE ONIONS CUT SMALL, one\n" \
-	"||||||| merged common ancestors\n" \
+	"||||||||| merged common ancestors\n" \
 	"Put into a pot three quarts of water, three onions cut small, one\n" \
-	"=======\n" \
+	"=========\n" \
 	"PUT INTO A POT three quarts of water, three onions cut small, one\n" \
-	">>>>>>> Temporary merge branch 2\n" \
+	">>>>>>>>> Temporary merge branch 2\n" \
 	"=======\n" \
 	"Put Into A Pot Three Quarts of Water, Three Onions Cut Small, One\n" \
 	">>>>>>> branchH-2\n" \

tests/merge/trees/recursive.c

@@ -312,7 +312,7 @@ void test_merge_trees_recursive__conflicting_merge_base(void)
 		{ 0100644, "4b7c5650008b2e747fe1809eeb5a1dde0e80850a", 0, "bouilli.txt" },
 		{ 0100644, "c4e6cca3ec6ae0148ed231f97257df8c311e015f", 0, "gravy.txt" },
 		{ 0100644, "68af1fc7407fd9addf1701a87eb1c95c7494c598", 0, "oyster.txt" },
-		{ 0100644, "3a66812fed1e03ea4a6a7ee28d8a57aec1ca6537", 1, "veal.txt" },
+		{ 0100644, "ba5714aa3d5aebfd8e19d19cb1ddcfda63426a44", 1, "veal.txt" },
 		{ 0100644, "d604c75019c282144bdbbf3fd3462ba74b240efc", 2, "veal.txt" },
 		{ 0100644, "37a5054a9f9b4628e3924c5cb8f2147c6e2a3efc", 3, "veal.txt" },
 	};
@@ -339,7 +339,7 @@ void test_merge_trees_recursive__conflicting_merge_base_with_diff3(void)
 		{ 0100644, "4b7c5650008b2e747fe1809eeb5a1dde0e80850a", 0, "bouilli.txt" },
 		{ 0100644, "c4e6cca3ec6ae0148ed231f97257df8c311e015f", 0, "gravy.txt" },
 		{ 0100644, "68af1fc7407fd9addf1701a87eb1c95c7494c598", 0, "oyster.txt" },
-		{ 0100644, "cd17a91513f3aee9e44114d1ede67932dd41d2fc", 1, "veal.txt" },
+		{ 0100644, "adb1bf17d112a0b4ecbd4e75bef6db3335d8ddcf", 1, "veal.txt" },
 		{ 0100644, "d604c75019c282144bdbbf3fd3462ba74b240efc", 2, "veal.txt" },
 		{ 0100644, "37a5054a9f9b4628e3924c5cb8f2147c6e2a3efc", 3, "veal.txt" },
 	};

tests/merge/workdir/recursive.c

@@ -44,7 +44,7 @@ void test_merge_workdir_recursive__writes_conflict_with_virtual_base(void)
 	cl_git_pass(git_futils_readbuffer(&conflicting_buf, "merge-recursive/veal.txt"));
 
 	cl_assert_equal_s(CONFLICTING_RECURSIVE_F1_TO_F2, conflicting_buf.ptr);
-	
+
 	git_index_free(index);
 	git_buf_free(&conflicting_buf);
 }
@@ -62,7 +62,7 @@ void test_merge_workdir_recursive__conflicting_merge_base_with_diff3(void)
 		{ 0100644, "4b7c5650008b2e747fe1809eeb5a1dde0e80850a", 0, "bouilli.txt" },
 		{ 0100644, "c4e6cca3ec6ae0148ed231f97257df8c311e015f", 0, "gravy.txt" },
 		{ 0100644, "68af1fc7407fd9addf1701a87eb1c95c7494c598", 0, "oyster.txt" },
-		{ 0100644, "cd17a91513f3aee9e44114d1ede67932dd41d2fc", 1, "veal.txt" },
+		{ 0100644, "adb1bf17d112a0b4ecbd4e75bef6db3335d8ddcf", 1, "veal.txt" },
 		{ 0100644, "d604c75019c282144bdbbf3fd3462ba74b240efc", 2, "veal.txt" },
 		{ 0100644, "37a5054a9f9b4628e3924c5cb8f2147c6e2a3efc", 3, "veal.txt" },
 	};