When using the interactive add, reset, stash or checkout machinery,
we do not have the option of reworking with a file when selecting
hunks, because the session automatically advances to the next file
or ends if we have just one file.

Introduce the flag `--auto-advance` which auto advances by default,
when interactively selecting patches with the '--patch' option.
However, the `--no-auto-advance` option does not auto advance, thereby
allowing users the option to rework with files.

Signed-off-by: Abraham Samuel Adekunle <redacted>
---
 add-interactive.c     | 4 ++++
 add-interactive.h     | 5 +++--
 builtin/add.c         | 4 ++++
 builtin/checkout.c    | 7 +++++++
 builtin/reset.c       | 4 ++++
 builtin/stash.c       | 8 ++++++++
 t/t9902-completion.sh | 1 +
 7 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/add-interactive.c b/add-interactive.c
index 95ec5a89f8..c3a36cd11f 100644
--- a/add-interactive.c
+++ b/add-interactive.c

@@ -64,6 +64,7 @@ void init_add_i_state(struct add_i_state *s, struct repository *r,
 	s->r = r;
 	s->context = -1;
 	s->interhunkcontext = -1;
+	s->auto_advance = 1;
 
 	s->use_color_interactive = check_color_config(r, "color.interactive");
 

@@ -124,6 +125,8 @@ void init_add_i_state(struct add_i_state *s, struct repository *r,
 			die(_("%s cannot be negative"), "--inter-hunk-context");
 		s->interhunkcontext = add_p_opt->interhunkcontext;
 	}
+	if (!add_p_opt->auto_advance)
+		s->auto_advance = 0;
 }

 struct add_i_state {
 	struct repository *r;

@@ -28,7 +29,7 @@ struct add_i_state {
 
 	int use_single_key;
 	char *interactive_diff_filter, *interactive_diff_algorithm;
-	int context, interhunkcontext;
+	int context, interhunkcontext, auto_advance;