diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 3674ac48e9..7d5bb65a49 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -29,8 +29,11 @@ endif::git-diff[]
 
 -s::
 --no-patch::
-	Suppress diff output. Useful for commands like `git show` that
-	show the patch by default, or to cancel the effect of `--patch`.
+	Suppress all output from the diff machinery.  Useful for
+	commands like `git show` that show the patch by default to
+	squelch their output, or to cancel the effect of options like
+	`--patch`, `--stat` earlier on the command line in an alias.
+
 endif::git-format-patch[]
 
 ifdef::git-log[]
diff --git a/diff.c b/diff.c
index 648f6717a5..5a2f096683 100644
--- a/diff.c
+++ b/diff.c
@@ -4868,6 +4868,7 @@ static int diff_opt_stat(const struct option *opt, const char *value, int unset)
 	} else
 		BUG("%s should not get here", opt->long_name);
 
+	options->output_format &= ~DIFF_FORMAT_NO_OUTPUT;
 	options->output_format |= DIFF_FORMAT_DIFFSTAT;
 	options->stat_name_width = name_width;
 	options->stat_graph_width = graph_width;
@@ -4887,6 +4888,7 @@ static int parse_dirstat_opt(struct diff_options *options, const char *params)
 	 * The caller knows a dirstat-related option is given from the command
 	 * line; allow it to say "return this_function();"
 	 */
+	options->output_format &= ~DIFF_FORMAT_NO_OUTPUT;
 	options->output_format |= DIFF_FORMAT_DIRSTAT;
 	return 1;
 }
@@ -5086,6 +5088,7 @@ static int diff_opt_compact_summary(const struct option *opt,
 		options->flags.stat_with_summary = 0;
 	} else {
 		options->flags.stat_with_summary = 1;
+		options->output_format &= ~DIFF_FORMAT_NO_OUTPUT;
 		options->output_format |= DIFF_FORMAT_DIFFSTAT;
 	}
 	return 0;
@@ -5404,9 +5407,8 @@ static void prep_parse_options(struct diff_options *options)
 		OPT_BITOP('p', "patch", &options->output_format,
 			  N_("generate patch"),
 			  DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT),
-		OPT_BIT_F('s', "no-patch", &options->output_format,
-			  N_("suppress diff output"),
-			  DIFF_FORMAT_NO_OUTPUT, PARSE_OPT_NONEG),
+		OPT_SET_INT('s', "no-patch", &options->output_format,
+			    N_("suppress diff output"), DIFF_FORMAT_NO_OUTPUT),
 		OPT_BITOP('u', NULL, &options->output_format,
 			  N_("generate patch"),
 			  DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT),
@@ -5415,9 +5417,9 @@ static void prep_parse_options(struct diff_options *options)
 			       PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_unified),
 		OPT_BOOL('W', "function-context", &options->flags.funccontext,
 			 N_("generate diffs with <n> lines context")),
-		OPT_BIT_F(0, "raw", &options->output_format,
+		OPT_BITOP(0, "raw", &options->output_format,
 			  N_("generate the diff in raw format"),
-			  DIFF_FORMAT_RAW, PARSE_OPT_NONEG),
+			  DIFF_FORMAT_RAW, DIFF_FORMAT_NO_OUTPUT),
 		OPT_BITOP(0, "patch-with-raw", &options->output_format,
 			  N_("synonym for '-p --raw'"),
 			  DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW,
@@ -5426,12 +5428,12 @@ static void prep_parse_options(struct diff_options *options)
 			  N_("synonym for '-p --stat'"),
 			  DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT,
 			  DIFF_FORMAT_NO_OUTPUT),
-		OPT_BIT_F(0, "numstat", &options->output_format,
+		OPT_BITOP(0, "numstat", &options->output_format,
 			  N_("machine friendly --stat"),
-			  DIFF_FORMAT_NUMSTAT, PARSE_OPT_NONEG),
-		OPT_BIT_F(0, "shortstat", &options->output_format,
+			  DIFF_FORMAT_NUMSTAT, DIFF_FORMAT_NO_OUTPUT),
+		OPT_BITOP(0, "shortstat", &options->output_format,
 			  N_("output only the last line of --stat"),
-			  DIFF_FORMAT_SHORTSTAT, PARSE_OPT_NONEG),
+			  DIFF_FORMAT_SHORTSTAT, DIFF_FORMAT_NO_OUTPUT),
 		OPT_CALLBACK_F('X', "dirstat", options, N_("<param1,param2>..."),
 			       N_("output the distribution of relative amount of changes for each sub-directory"),
 			       PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
@@ -5447,9 +5449,9 @@ static void prep_parse_options(struct diff_options *options)
 		OPT_BIT_F(0, "check", &options->output_format,
 			  N_("warn if changes introduce conflict markers or whitespace errors"),
 			  DIFF_FORMAT_CHECKDIFF, PARSE_OPT_NONEG),
-		OPT_BIT_F(0, "summary", &options->output_format,
+		OPT_BITOP(0, "summary", &options->output_format,
 			  N_("condensed summary such as creations, renames and mode changes"),
-			  DIFF_FORMAT_SUMMARY, PARSE_OPT_NONEG),
+			  DIFF_FORMAT_SUMMARY, DIFF_FORMAT_NO_OUTPUT),
 		OPT_BIT_F(0, "name-only", &options->output_format,
 			  N_("show only names of changed files"),
 			  DIFF_FORMAT_NAME, PARSE_OPT_NONEG),
diff --git a/t/t4000-diff-format.sh b/t/t4000-diff-format.sh
index bfcaae390f..762b9d4c60 100755
--- a/t/t4000-diff-format.sh
+++ b/t/t4000-diff-format.sh
@@ -5,6 +5,9 @@
 
 test_description='Test built-in diff output engine.
 
+We happen to know that all diff plumbing and diff Porcelain share the
+same command line parser, so testing one should be sufficient; pick
+diff-files as a representative.
 '
 
 TEST_PASSES_SANITIZE_LEAK=true
@@ -16,9 +19,11 @@ Line 2
 line 3'
 cat path0 >path1
 chmod +x path1
+mkdir path2
+>path2/path3
 
 test_expect_success 'update-index --add two files with and without +x.' '
-	git update-index --add path0 path1
+	git update-index --add path0 path1 path2/path3
 '
 
 mv path0 path0-
@@ -91,4 +96,29 @@ test_expect_success 'git diff-files --patch --no-patch does not show the patch'
 	test_must_be_empty err
 '
 
+
+# Smudge path2/path3 so that dirstat has something to show
+date >path2/path3
+
+for format in stat raw numstat shortstat dirstat
+do
+	test_expect_success "--no-patch in 'git diff-files --no-patch --$format' is a no-op" '
+		git diff-files --no-patch "--$format" >actual &&
+		git diff-files "--$format" >expect &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "--no-patch clears all previous ones" '
+		git diff-files --$format -s -p >actual &&
+		git diff-files -p >expect &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "--no-patch in 'git diff --no-patch --$format' is a no-op" '
+		git diff --no-patch "--$format" >actual &&
+		git diff "--$format" >expect &&
+		test_cmp expect actual
+	'
+done
+
 test_done
