[PATCH v2 9/9] built-in add -i: offer the `quit` command

["Johannes Schindelin via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Johannes Schindelin <johannes.schindelin@xxxxxx>

We do not really want to `exit()` here, of course, as this is safely
libified code.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 add-interactive.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/add-interactive.c b/add-interactive.c
index 4d7d44a917..f395d54c08 100644
--- a/add-interactive.c
+++ b/add-interactive.c
@@ -1071,6 +1071,7 @@ int run_add_i(struct repository *r, const struct pathspec *ps)
 		{ "add untracked", run_add_untracked },
 		{ "patch", run_patch },
 		{ "diff", run_diff },
+		{ "quit", NULL },
 		{ "help", run_help },
 	};
 	struct prefix_item_list commands = PREFIX_ITEM_LIST_INIT;
@@ -1122,17 +1123,22 @@ int run_add_i(struct repository *r, const struct pathspec *ps)
 	res = run_status(&s, ps, &files, &opts);
 
 	for (;;) {
+		struct command_item *util;
+
 		i = list_and_choose(&s, &commands, &main_loop_opts);
-		if (i == LIST_AND_CHOOSE_QUIT) {
+		if (i < 0 || i >= commands.items.nr)
+			util = NULL;
+		else
+			util = commands.items.items[i].util;
+
+		if (i == LIST_AND_CHOOSE_QUIT || (util && !util->command)) {
 			printf(_("Bye.\n"));
 			res = 0;
 			break;
 		}
-		if (i != LIST_AND_CHOOSE_ERROR) {
-			struct command_item *util =
-				commands.items.items[i].util;
+
+		if (util)
 			res = util->command(&s, ps, &files, &opts);
-		}
 	}
 
 	prefix_item_list_clear(&files);
-- 
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