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[PATCH v5 2/2] add-patch: response to unknown command

From
Rubén Justo <rjusto@gmail.com>
Date
Apr 29, 2024, 18:37 UTC
Message-ID
<95c0dfff-3b11-4156-a502-c741fc0b76f7@gmail.com>
In-Reply-To
<952a9514-3cf1-4601-8f0d-db57adc750c3@gmail.com>

When the user gives an unknown command to the "add -p" prompt, the list of accepted commands with their explanation is given. This is the same output they get when they say '?'.

However, the unknown command may be due to a user input error rather than the user not knowing the valid command.

To reduce the likelihood of user confusion and error repetition, instead of displaying the list of accepted commands, display a short error message with the unknown command received, as feedback to the user.

Include a reminder about the current command '?' in the new message, to guide the user if they want help.

Signed-off-by: Rubén Justo <rjusto@gmail.com>
---
 add-patch.c                |  5 ++++-
 t/t3701-add-interactive.sh | 16 +++++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/add-patch.c b/add-patch.c
index fc0eed4fd4..2252895c28 100644
--- a/add-patch.c
+++ b/add-patch.c
@@ -1667,7 +1667,7 @@ static int patch_update_file(struct add_p_state *s,
 			}
 		} else if (s->answer.buf[0] == 'p') {
 			rendered_hunk_index = -1;
-		} else {
+		} else if (s->answer.buf[0] == '?') {
 			const char *p = _(help_patch_remainder), *eol = p;
 
 			color_fprintf(stdout, s->s.help_color, "%s",
@@ -1691,6 +1691,9 @@ static int patch_update_file(struct add_p_state *s,
 				color_fprintf_ln(stdout, s->s.help_color,
 						 "%.*s", (int)(eol - p), p);
 			}
+		} else {
+			err(s, _("Unknown command '%s' (use '?' for help)"),
+			    s->answer.buf);
 		}
 	}
 
diff --git a/t/t3701-add-interactive.sh b/t/t3701-add-interactive.sh
index c5531520cb..28a95a775d 100755
--- a/t/t3701-add-interactive.sh
+++ b/t/t3701-add-interactive.sh
@@ -8,6 +8,8 @@ TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-terminal.sh
 
+SP=" "
+
 diff_cmp () {
 	for x
 	do
@@ -56,6 +58,19 @@ test_expect_success 'warn about add.interactive.useBuiltin' '
 	done
 '
 
+test_expect_success 'unknown command' '
+	test_when_finished "git reset --hard; rm -f command" &&
+	echo W >command &&
+	git add -N command &&
+	git diff command >expect &&
+	cat >>expect <<-EOF &&
+	(1/1) Stage addition [y,n,q,a,d,e,p,?]? Unknown command ${SQ}W${SQ} (use ${SQ}?${SQ} for help)
+	(1/1) Stage addition [y,n,q,a,d,e,p,?]?$SP
+	EOF
+	git add -p -- command <command >actual 2>&1 &&
+	test_cmp expect actual
+'
+
 test_expect_success 'setup (initial)' '
 	echo content >file &&
 	git add file &&
@@ -232,7 +247,6 @@ test_expect_success 'setup file' '
 '
 
 test_expect_success 'setup patch' '
-	SP=" " &&
 	NULL="" &&
 	cat >patch <<-EOF
 	@@ -1,4 +1,4 @@
-- 
2.45.0.2.g84ce137e4a
Previous: Junio C Hamano
Message 55 of 55 in “add-patch: response to invalid option”
  1. add-patch: response to invalid optionRubén Justo, Apr 15, 2024
  2. Patrick SteinhardtApr 16, 2024
  3. Rubén JustoApr 16, 2024
  4. phillip.wood123@gmail.comApr 16, 2024
  5. Rubén JustoApr 16, 2024
  6. phillip.wood123@gmail.comApr 17, 2024
  7. Junio C HamanoApr 17, 2024
  8. phillip.wood123@gmail.comApr 18, 2024
  9. Junio C HamanoApr 16, 2024
  10. Phillip WoodApr 16, 2024
  11. Junio C HamanoApr 16, 2024
  12. Phillip WoodApr 16, 2024
  13. Junio C HamanoApr 16, 2024
  14. Rubén JustoApr 16, 2024
  15. add-patch: response to invalid commandRubén Justo, Apr 20, 2024
  16. Junio C HamanoApr 20, 2024
  17. add-patch: response to unknown commandRubén Justo, Apr 21, 2024
  18. phillip.wood123@gmail.comApr 21, 2024
  19. Rubén JustoApr 21, 2024
  20. add-patch: response to unknown commandRubén Justo, Apr 21, 2024
  21. Junio C HamanoApr 22, 2024
  22. phillip.wood123@gmail.comApr 24, 2024
  23. Junio C HamanoApr 24, 2024
  24. Phillip WoodApr 29, 2024
  25. Junio C HamanoApr 29, 2024
  26. Jeff KingApr 25, 2024
  27. Eric SunshineApr 25, 2024
  28. Junio C HamanoApr 25, 2024
  29. Eric SunshineApr 25, 2024
  30. Junio C HamanoApr 25, 2024
  31. Junio C HamanoApr 25, 2024
  32. Rubén JustoApr 25, 2024
  33. Junio C HamanoApr 25, 2024
  34. Rubén JustoApr 25, 2024
  35. Junio C HamanoApr 26, 2024
  36. Junio C HamanoApr 26, 2024
  37. Jeff KingApr 26, 2024
  38. Rubén JustoApr 25, 2024
  39. Jeff KingApr 26, 2024
  40. Rubén JustoApr 26, 2024
  41. phillip.wood123@gmail.comApr 25, 2024
  42. 0/2 add-patch: response to unknown commandRubén Justo, Apr 29, 2024
  43. 1/2 add-patch: do not show UI messages on stderrRubén Justo, Apr 29, 2024
  44. Junio C HamanoApr 29, 2024
  45. Jeff KingApr 30, 2024
  46. Rubén JustoApr 30, 2024
  47. Junio C HamanoApr 30, 2024
  48. Junio C HamanoApr 30, 2024
  49. phillip.wood123@gmail.comApr 30, 2024
  50. Rubén JustoApr 30, 2024
  51. phillip.wood123@gmail.comMay 1, 2024
  52. Junio C HamanoMay 1, 2024
  53. Rubén JustoMay 1, 2024
  54. Junio C HamanoMay 2, 2024
  55. 2/2 add-patch: response to unknown commandRubén Justo, Apr 29, 2024

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