diff --git a/add-interactive.c b/add-interactive.c
index 6a5048c83e..0e753d2acc 100644
--- a/add-interactive.c
+++ b/add-interactive.c
@@ -924,7 +924,7 @@ static int run_patch(struct add_i_state *s, const struct pathspec *ps,
 		parse_pathspec(&ps_selected,
 			       PATHSPEC_ALL_MAGIC & ~PATHSPEC_LITERAL,
 			       PATHSPEC_LITERAL_PATH, "", args.argv);
-		res = run_add_p(s->r, &ps_selected);
+		res = run_add_p(s->r, ADD_P_STAGE, NULL, &ps_selected);
 		argv_array_clear(&args);
 		clear_pathspec(&ps_selected);
 	}
diff --git a/add-interactive.h b/add-interactive.h
index 062dc3646c..3defa2ff3d 100644
--- a/add-interactive.h
+++ b/add-interactive.h
@@ -22,6 +22,12 @@ void init_add_i_state(struct add_i_state *s, struct repository *r);
 struct repository;
 struct pathspec;
 int run_add_i(struct repository *r, const struct pathspec *ps);
-int run_add_p(struct repository *r, const struct pathspec *ps);
+
+enum add_p_mode {
+	ADD_P_STAGE,
+};
+
+int run_add_p(struct repository *r, enum add_p_mode mode,
+	      const char *revision, const struct pathspec *ps);
 
 #endif
diff --git a/add-patch.c b/add-patch.c
index 2c46fe5b33..8a691f07da 100644
--- a/add-patch.c
+++ b/add-patch.c
@@ -11,10 +11,33 @@ enum prompt_mode_type {
 	PROMPT_MODE_CHANGE = 0, PROMPT_DELETION, PROMPT_HUNK
 };
 
-static const char *prompt_mode[] = {
-	N_("Stage mode change [y,n,a,q,d%s,?]? "),
-	N_("Stage deletion [y,n,a,q,d%s,?]? "),
-	N_("Stage this hunk [y,n,a,q,d%s,?]? ")
+struct patch_mode {
+	const char *diff[4], *apply[4], *apply_check[4];
+	unsigned is_reverse:1, apply_for_checkout:1;
+	const char *prompt_mode[PROMPT_HUNK + 1];
+	const char *edit_hunk_hint, *help_patch_text;
+};
+
+static struct patch_mode patch_mode_stage = {
+	.diff = { "diff-files", NULL },
+	.apply = { "--cached", NULL },
+	.apply_check = { "--cached", NULL },
+	.is_reverse = 0,
+	.prompt_mode = {
+		N_("Stage mode change [y,n,q,a,d%s,?]? "),
+		N_("Stage deletion [y,n,q,a,d%s,?]? "),
+		N_("Stage this hunk [y,n,q,a,d%s,?]? ")
+	},
+	.edit_hunk_hint = N_("If the patch applies cleanly, the edited hunk "
+			     "will immediately be marked for staging."),
+	.help_patch_text =
+		N_("y - stage this hunk\n"
+		   "n - do not stage this hunk\n"
+		   "q - quit; do not stage this hunk or any of the remaining "
+			"ones\n"
+		   "a - stage this hunk and all later hunks in the file\n"
+		   "d - do not stage this hunk or any of the later hunks in "
+			"the file\n")
 };
 
 struct hunk_header {
@@ -47,6 +70,10 @@ struct add_p_state {
 		unsigned deleted:1, mode_change:1,binary:1;
 	} *file_diff;
 	size_t file_diff_nr;
+
+	/* patch mode */
+	struct patch_mode *mode;
+	const char *revision;
 };
 
 static void err(struct add_p_state *s, const char *fmt, ...)
@@ -162,9 +189,18 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps)
 	struct hunk *hunk = NULL;
 	int res;
 
+	argv_array_pushv(&args, s->mode->diff);
+	if (s->revision) {
+		struct object_id oid;
+		argv_array_push(&args,
+				/* could be on an unborn branch */
+				!strcmp("HEAD", s->revision) &&
+				get_oid("HEAD", &oid) ?
+				empty_tree_oid_hex() : s->revision);
+	}
+	color_arg_index = args.argc;
 	/* Use `--no-color` explicitly, just in case `diff.color = always`. */
-	argv_array_pushl(&args, "diff-files", "-p", "--no-color", "--", NULL);
-	color_arg_index = args.argc - 2;
+	argv_array_pushl(&args, "--no-color", "-p", "--", NULL);
 	for (i = 0; i < ps->nr; i++)
 		argv_array_push(&args, ps->items[i].original);
 
@@ -382,7 +418,10 @@ static void render_hunk(struct add_p_state *s, struct hunk *hunk,
 				- header->colored_extra_start;
 		}
 
-		new_offset += delta;
+		if (s->mode->is_reverse)
+			old_offset -= delta;
+		else
+			new_offset += delta;
 
 		strbuf_addf(out, "@@ -%lu,%lu +%lu,%lu @@",
 			    old_offset, header->old_count,
@@ -805,11 +844,10 @@ static int edit_hunk_manually(struct add_p_state *s, struct hunk *hunk)
 				"(context).\n"
 				"To remove '%c' lines, delete them.\n"
 				"Lines starting with %c will be removed.\n"),
-			      '-', '+', comment_line_char);
-	strbuf_commented_addf(&s->buf,
-			      _("If the patch applies cleanly, the edited hunk "
-				"will immediately be\n"
-				"marked for staging.\n"));
+			      s->mode->is_reverse ? '+' : '-',
+			      s->mode->is_reverse ? '-' : '+',
+			      comment_line_char);
+	strbuf_commented_addf(&s->buf, "%s", _(s->mode->edit_hunk_hint));
 	/*
 	 * TRANSLATORS: 'it' refers to the patch mentioned in the previous
 	 * messages.
@@ -890,7 +928,8 @@ static int run_apply_check(struct add_p_state *s,
 	reassemble_patch(s, file_diff, 1, &s->buf);
 
 	setup_child_process(s, &cp,
-			    "apply", "--cached", "--check", NULL);
+			    "apply", "--check", NULL);
+	argv_array_pushv(&cp.args, s->mode->apply_check);
 	if (pipe_command(&cp, s->buf.buf, s->buf.len, NULL, 0, NULL, 0))
 		return error(_("'git apply --cached' failed"));
 
@@ -1005,13 +1044,6 @@ static size_t display_hunks(struct add_p_state *s,
 	return end_index;
 }
 
-static const char help_patch_text[] =
-N_("y - stage this hunk\n"
-   "n - do not stage this hunk\n"
-   "q - quit; do not stage this hunk or any of the remaining ones\n"
-   "a - stage this and all the remaining hunks\n"
-   "d - do not stage this hunk nor any of the remaining hunks\n");
-
 static const char help_patch_remainder[] =
 N_("j - leave this hunk undecided, see next undecided hunk\n"
    "J - leave this hunk undecided, see next hunk\n"
@@ -1097,7 +1129,8 @@ static int patch_update_file(struct add_p_state *s,
 			      (uintmax_t)hunk_index + 1,
 			      (uintmax_t)file_diff->hunk_nr);
 		color_fprintf(stdout, s->s.prompt_color,
-			      _(prompt_mode[prompt_mode_type]), s->buf.buf);
+			      _(s->mode->prompt_mode[prompt_mode_type]),
+			      s->buf.buf);
 		fflush(stdout);
 		if (strbuf_getline(&s->answer, stdin) == EOF)
 			break;
@@ -1254,7 +1287,7 @@ static int patch_update_file(struct add_p_state *s,
 			const char *p = _(help_patch_remainder), *eol = p;
 
 			color_fprintf(stdout, s->s.help_color, "%s",
-				      _(help_patch_text));
+				      _(s->mode->help_patch_text));
 
 			/*
 			 * Show only those lines of the remainder that are
@@ -1288,10 +1321,11 @@ static int patch_update_file(struct add_p_state *s,
 		reassemble_patch(s, file_diff, 0, &s->buf);
 
 		discard_index(s->s.r->index);
-		setup_child_process(s, &cp, "apply", "--cached", NULL);
+		setup_child_process(s, &cp, "apply", NULL);
+		argv_array_pushv(&cp.args, s->mode->apply);
 		if (pipe_command(&cp, s->buf.buf, s->buf.len,
 				 NULL, 0, NULL, 0))
-			error(_("'git apply --cached' failed"));
+			error(_("'git apply' failed"));
 		if (!repo_read_index(s->s.r))
 			repo_refresh_and_write_index(s->s.r, REFRESH_QUIET, 0,
 						     1, NULL, NULL, NULL);
@@ -1301,7 +1335,8 @@ static int patch_update_file(struct add_p_state *s,
 	return quit;
 }
 
-int run_add_p(struct repository *r, const struct pathspec *ps)
+int run_add_p(struct repository *r, enum add_p_mode mode,
+	      const char *revision, const struct pathspec *ps)
 {
 	struct add_p_state s = {
 		{ r }, STRBUF_INIT, STRBUF_INIT, STRBUF_INIT, STRBUF_INIT
@@ -1310,6 +1345,9 @@ int run_add_p(struct repository *r, const struct pathspec *ps)
 
 	init_add_i_state(&s.s, r);
 
+	s.mode = &patch_mode_stage;
+	s.revision = revision;
+
 	if (discard_index(r->index) < 0 || repo_read_index(r) < 0 ||
 	    repo_refresh_and_write_index(r, REFRESH_QUIET, 0, 1,
 					 NULL, NULL, NULL) < 0 ||
diff --git a/builtin/add.c b/builtin/add.c
index 1deb59a642..05b727a426 100644
--- a/builtin/add.c
+++ b/builtin/add.c
@@ -194,12 +194,18 @@ int run_add_interactive(const char *revision, const char *patch_mode,
 				    &use_builtin_add_i);
 
 	if (use_builtin_add_i == 1) {
+		enum add_p_mode mode;
+
 		if (!patch_mode)
 			return !!run_add_i(the_repository, pathspec);
-		if (strcmp(patch_mode, "--patch"))
+
+		if (!strcmp(patch_mode, "--patch"))
+			mode = ADD_P_STAGE;
+		else
 			die("'%s' not yet supported in the built-in add -p",
 			    patch_mode);
-		return !!run_add_p(the_repository, pathspec);
+
+		return !!run_add_p(the_repository, mode, revision, pathspec);
 	}
 
 	argv_array_push(&argv, "add--interactive");
