diff --git a/Documentation/config.txt b/Documentation/config.txt
index 035df2cfb1..495b7e741f 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1541,7 +1541,7 @@ receive.denyDeletes::
 	the ref. Use this to prevent such a ref deletion via a push.
 
 receive.denyCurrentBranch::
-	If set to true or "refuse", receive-pack will deny a ref update
+	If set to true or "refuse", git-receive-pack will deny a ref update
 	to the currently checked out branch of a non-bare repository.
 	Such a push is potentially dangerous because it brings the HEAD
 	out of sync with the index and working tree. If set to "warn",
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 98cc779d83..0d89aaaf2a 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -21,6 +21,7 @@ endif::git-format-patch[]
 ifndef::git-format-patch[]
 -p::
 -u::
+--patch::
 	Generate patch (see section on generating patches).
 	{git-diff? This is the default.}
 endif::git-format-patch[]
diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
index 7e83288d18..390d85ccae 100644
--- a/Documentation/git-for-each-ref.txt
+++ b/Documentation/git-for-each-ref.txt
@@ -86,6 +86,7 @@ objectsize::
 
 objectname::
 	The object name (aka SHA-1).
+	For a non-ambiguous abbreviation of the object name append `:short`.
 
 upstream::
 	The name of a local ref which can be considered ``upstream''
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 0d07b1b207..5863decdc9 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -295,6 +295,7 @@ link:howto/revert-a-faulty-merge.txt[revert-a-faulty-merge How-To] for details).
 --ignore-date::
 	These flags are passed to 'git am' to easily change the dates
 	of the rebased commits (see linkgit:git-am[1]).
+	Incompatible with the --interactive option.
 
 -i::
 --interactive::
diff --git a/Documentation/gitdiffcore.txt b/Documentation/gitdiffcore.txt
index 9de8caf5d1..5d91a7e5b3 100644
--- a/Documentation/gitdiffcore.txt
+++ b/Documentation/gitdiffcore.txt
@@ -227,8 +227,8 @@ changes that touch a specified string, and is controlled by the
 commands.
 
 When diffcore-pickaxe is in use, it checks if there are
-filepairs whose "original" side has the specified string and
-whose "result" side does not.  Such a filepair represents "the
+filepairs whose "result" side has the specified string and
+whose "origin" side does not.  Such a filepair represents "the
 string appeared in this changeset".  It also checks for the
 opposite case that loses the specified string.
 
diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 62be1bbfd6..3a97953177 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -227,6 +227,9 @@ static void grab_common_values(struct atom_value *val, int deref, struct object
 			strcpy(s, sha1_to_hex(obj->sha1));
 			v->s = s;
 		}
+		else if (!strcmp(name, "objectname:short")) {
+			v->s = find_unique_abbrev(obj->sha1, DEFAULT_ABBREV);
+		}
 	}
 }
 
diff --git a/diff.c b/diff.c
index 9de23b87ce..302b205572 100644
--- a/diff.c
+++ b/diff.c
@@ -2779,7 +2779,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 	const char *arg = av[0];
 
 	/* Output format options */
-	if (!strcmp(arg, "-p") || !strcmp(arg, "-u"))
+	if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch"))
 		options->output_format |= DIFF_FORMAT_PATCH;
 	else if (opt_arg(arg, 'U', "unified", &options->context))
 		options->output_format |= DIFF_FORMAT_PATCH;
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index e9eb6fece7..934aacb614 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -6151,8 +6151,8 @@ sub git_commitdiff {
 			}
 			push @commit_spec, '--root', $hash;
 		}
-		open $fd, "-|", git_cmd(), "format-patch", '--encoding=utf8',
-			'--stdout', @commit_spec
+		open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
+			'--encoding=utf8', '--stdout', @commit_spec
 			or die_error(500, "Open git-format-patch failed");
 	} else {
 		die_error(400, "Unknown commitdiff format");
diff --git a/sha1_file.c b/sha1_file.c
index bbb819faa1..d8e61a65d1 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -2454,6 +2454,8 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object,
 		else
 			ret = -1;
 		strbuf_release(&sbuf);
+	} else if (!size) {
+		ret = index_mem(sha1, NULL, size, write_object, type, path);
 	} else if (size <= SMALL_FILE_SIZE) {
 		char *buf = xmalloc(size);
 		if (size == read_in_full(fd, buf, size))
@@ -2462,12 +2464,11 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object,
 		else
 			ret = error("short read %s", strerror(errno));
 		free(buf);
-	} else if (size) {
+	} else {
 		void *buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
 		ret = index_mem(sha1, buf, size, write_object, type, path);
 		munmap(buf, size);
-	} else
-		ret = index_mem(sha1, NULL, size, write_object, type, path);
+	}
 	close(fd);
 	return ret;
 }
diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index 8052c86ad3..7dc8a510c7 100755
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -295,6 +295,15 @@ test_expect_success 'Check short upstream format' '
 	test_cmp expected actual
 '
 
+cat >expected <<EOF
+67a36f1
+EOF
+
+test_expect_success 'Check short objectname format' '
+	git for-each-ref --format="%(objectname:short)" refs/heads >actual &&
+	test_cmp expected actual
+'
+
 test_expect_success 'Check for invalid refname format' '
 	test_must_fail git for-each-ref --format="%(refname:INVALID)"
 '