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From: "Rubén Justo" <rjusto@gmail•com>
To: Git List <git@vger•kernel.org>
Cc: Junio C Hamano <gitster@pobox•com>,
	Dragan Simic <dsimic@manjaro•org>, Jeff King <peff@peff•net>,
	Phillip Wood <phillip.wood@dunelm•org.uk>
Subject: [PATCH 4/4] add-patch: render hunks through the pager
Date: Fri, 12 Jul 2024 10:00:48 +0900	[thread overview]
Message-ID: <5effca4d-536c-4e51-a024-5f1e90583176@gmail.com> (raw)
In-Reply-To: <2653fb37-c8a8-49b1-a804-4be6654a2cad@gmail.com>

Make the print command to trigger the pager when invoked using a capital
'P', to make it easier for the user to review long hunks.

Signed-off-by: Rubén Justo <rjusto@gmail•com>
---
 add-patch.c                | 18 +++++++++++++---
 t/t3701-add-interactive.sh | 44 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+), 3 deletions(-)

diff --git a/add-patch.c b/add-patch.c
index 6e176cd21a..f2c76b7d83 100644
--- a/add-patch.c
+++ b/add-patch.c
@@ -7,9 +7,11 @@
 #include "environment.h"
 #include "gettext.h"
 #include "object-name.h"
+#include "pager.h"
 #include "read-cache-ll.h"
 #include "repository.h"
 #include "strbuf.h"
+#include "sigchain.h"
 #include "run-command.h"
 #include "strvec.h"
 #include "pathspec.h"
@@ -1391,7 +1393,7 @@ N_("j - leave this hunk undecided, see next undecided hunk\n"
    "/ - search for a hunk matching the given regex\n"
    "s - split the current hunk into smaller hunks\n"
    "e - manually edit the current hunk\n"
-   "p - print the current hunk\n"
+   "p - print the current hunk, 'P' to use the pager\n"
    "? - print help\n");
 
 static int patch_update_file(struct add_p_state *s,
@@ -1402,7 +1404,7 @@ static int patch_update_file(struct add_p_state *s,
 	struct hunk *hunk;
 	char ch;
 	struct child_process cp = CHILD_PROCESS_INIT;
-	int colored = !!s->colored.len, quit = 0;
+	int colored = !!s->colored.len, quit = 0, use_pager = 0;
 	enum prompt_mode_type prompt_mode_type;
 	enum {
 		ALLOW_GOTO_PREVIOUS_HUNK = 1 << 0,
@@ -1452,9 +1454,18 @@ static int patch_update_file(struct add_p_state *s,
 		strbuf_reset(&s->buf);
 		if (file_diff->hunk_nr) {
 			if (rendered_hunk_index != hunk_index) {
+				if (use_pager) {
+					setup_pager();
+					sigchain_push(SIGPIPE, SIG_IGN);
+				}
 				render_hunk(s, hunk, 0, colored, &s->buf);
 				fputs(s->buf.buf, stdout);
 				rendered_hunk_index = hunk_index;
+				if (use_pager) {
+					sigchain_pop(SIGPIPE);
+					wait_for_pager();
+					use_pager = 0;
+				}
 			}
 
 			strbuf_reset(&s->buf);
@@ -1675,8 +1686,9 @@ static int patch_update_file(struct add_p_state *s,
 				hunk->use = USE_HUNK;
 				goto soft_increment;
 			}
-		} else if (s->answer.buf[0] == 'p') {
+		} else if (ch == 'p') {
 			rendered_hunk_index = -1;
+			use_pager = (s->answer.buf[0] == 'P') ? 1 : 0;
 		} else if (s->answer.buf[0] == '?') {
 			const char *p = _(help_patch_remainder), *eol = p;
 
diff --git a/t/t3701-add-interactive.sh b/t/t3701-add-interactive.sh
index 6daf3a6be0..bf82a9dc35 100755
--- a/t/t3701-add-interactive.sh
+++ b/t/t3701-add-interactive.sh
@@ -591,6 +591,50 @@ test_expect_success 'print again the hunk' '
 	test_cmp expect actual.trimmed
 '
 
+test_expect_success TTY 'print again the hunk (PAGER)' '
+	test_when_finished "git reset" &&
+	cat >expect <<-EOF &&
+	<GREEN>+<RESET><GREEN>15<RESET>
+	 20<RESET>
+	<BOLD;BLUE>(1/2) Stage this hunk [y,n,q,a,d,j,J,g,/,e,p,?]? <RESET>PAGER <CYAN>@@ -1,2 +1,3 @@<RESET>
+	PAGER  10<RESET>
+	PAGER <GREEN>+<RESET><GREEN>15<RESET>
+	PAGER  20<RESET>
+	<BOLD;BLUE>(1/2) Stage this hunk [y,n,q,a,d,j,J,g,/,e,p,?]? <RESET>
+	EOF
+	test_write_lines s y g 1 P |
+	(
+		GIT_PAGER="sed s/^/PAGER\ /" &&
+		export GIT_PAGER &&
+		test_terminal git add -p >actual
+	) &&
+	tail -n 7 <actual | test_decode_color >actual.trimmed &&
+	test_cmp expect actual.trimmed
+'
+
+test_expect_success TTY 'P does not break if pager ends unexpectly' '
+	test_when_finished "rm -f huge_file; git reset" &&
+	printf "%2500000s" Y >huge_file &&
+	git add -N huge_file &&
+	cat >expect <<-EOF &&
+	<GREEN>+<RESET><GREEN>22<RESET>
+	<GREEN>+<RESET><GREEN>23<RESET>
+	<GREEN>+<RESET><GREEN>24<RESET>
+	 30<RESET>
+	 40<RESET>
+	 50<RESET>
+	<BOLD;BLUE>(1/1) Stage this hunk [y,n,q,a,d,s,e,p,?]? <RESET>
+	EOF
+	test_write_lines P |
+	(
+		GIT_PAGER="head -1" &&
+		export GIT_PAGER &&
+		test_terminal git add -p >actual
+	) &&
+	tail -n 7 <actual | test_decode_color >actual.trimmed &&
+	test_cmp expect actual.trimmed
+'
+
 test_expect_success 'split hunk "add -p (edit)"' '
 	# Split, say Edit and do nothing.  Then:
 	#
-- 
2.45.1

  parent reply	other threads:[~2024-07-12  1:00 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-07-12  0:57 [PATCH 0/4] use the pager in 'add -p' Rubén Justo
2024-07-12  1:00 ` [PATCH 1/4] add-patch: test for 'p' command Rubén Justo
2024-07-12  1:00 ` [PATCH 2/4] pager: do not close fd 2 unnecessarily Rubén Justo
2024-07-12  1:00 ` [PATCH 3/4] pager: introduce wait_for_pager Rubén Justo
2024-07-12 13:17   ` Phillip Wood
2024-07-12  1:00 ` Rubén Justo [this message]
2024-07-12  8:58   ` [PATCH 4/4] add-patch: render hunks through the pager Dragan Simic
2024-07-12 13:26   ` Phillip Wood
2024-07-12 16:24     ` Rubén Justo
2024-07-13  3:23       ` Rubén Justo
2024-07-13  9:12       ` Junio C Hamano
2024-07-13 13:17       ` phillip.wood123
2024-07-13 23:13         ` Rubén Justo
2024-07-12  8:56 ` [PATCH 0/4] use the pager in 'add -p' Dragan Simic
2024-07-13 16:26 ` [PATCH v2 " Rubén Justo
2024-07-13 16:29   ` [PATCH v2 1/4] add-patch: test for 'p' command Rubén Justo
2024-07-13 16:29   ` [PATCH v2 2/4] pager: do not close fd 2 unnecessarily Rubén Justo
2024-07-13 16:29   ` [PATCH v2 3/4] pager: introduce wait_for_pager Rubén Justo
2024-07-13 16:30   ` [PATCH v2 4/4] add-patch: render hunks through the pager Rubén Justo
2024-07-13 17:08   ` [PATCH v2 0/4] use the pager in 'add -p' Junio C Hamano
2024-07-13 23:21     ` Rubén Justo
2024-07-14  1:18       ` Junio C Hamano
2024-07-14 16:00   ` [PATCH v3 " Rubén Justo
2024-07-14 16:04     ` [PATCH v3 1/4] add-patch: test for 'p' command Rubén Justo
2024-07-14 16:04     ` [PATCH v3 2/4] pager: do not close fd 2 unnecessarily Rubén Justo
2024-07-14 16:04     ` [PATCH v3 4/4] add-patch: render hunks through the pager Rubén Justo
2024-07-15 14:10       ` Phillip Wood
2024-07-15 23:54       ` Junio C Hamano
2024-07-17 17:20         ` Rubén Justo
2024-07-17 19:39           ` phillip.wood123
2024-07-17 20:03             ` Junio C Hamano
2024-07-17 20:09               ` Eric Sunshine
2024-07-17 20:21                 ` Junio C Hamano
2024-07-20 22:37                 ` Rubén Justo
2024-07-22  7:18                   ` Eric Sunshine
2024-07-22 14:53                     ` Rubén Justo
2024-07-18  9:48               ` phillip.wood123
2024-07-17 20:31             ` Junio C Hamano
2024-07-18  9:56               ` phillip.wood123
2024-07-20 22:39               ` Rubén Justo
2024-07-20 22:29             ` Rubén Justo
2024-07-22 10:18               ` Phillip Wood
2024-07-22 16:45                 ` Rubén Justo
2024-07-22 17:22               ` Junio C Hamano
2024-07-22 19:06                 ` Rubén Justo
2024-07-22 19:27                   ` Junio C Hamano
2024-07-22 21:06                     ` Re* " Junio C Hamano
2024-07-22 22:00                       ` Rubén Justo
2024-07-22 23:12                       ` Kyle Lippincott
2024-07-22 23:28                         ` Junio C Hamano
2024-07-23  2:31                         ` Junio C Hamano
2024-07-22 21:25                   ` Junio C Hamano
2024-07-22 23:20                     ` Rubén Justo
2024-07-22 23:24                       ` [PATCH 1/2] t3701: avoid one-shot export for shell functions Rubén Justo
2024-07-22 23:44                         ` Junio C Hamano
2024-07-22 23:57                           ` Junio C Hamano
2024-07-22 23:24                       ` [PATCH 2/2] pager: make wait_for_pager a no-op for "cat" Rubén Justo
2024-07-22 23:54                         ` Junio C Hamano
2024-07-18  9:58           ` [PATCH v3 4/4] add-patch: render hunks through the pager phillip.wood123
2024-07-20 22:45             ` Rubén Justo
2024-07-14 16:04     ` [PATCH v3 3/4] pager: introduce wait_for_pager Rubén Justo
2024-07-15 14:13       ` Phillip Wood
2024-07-15 20:04         ` Rubén Justo
2024-07-17 14:58           ` phillip.wood123
2024-07-15 20:16     ` [PATCH v4 0/4] add-patch: render hunks through the pager Rubén Justo
2024-07-15 20:20       ` [PATCH v4 1/4] add-patch: test for 'p' command Rubén Justo
2024-07-15 20:21       ` [PATCH v4 2/4] pager: do not close fd 2 unnecessarily Rubén Justo
2024-07-15 20:21       ` [PATCH v4 3/4] pager: introduce wait_for_pager Rubén Justo
2024-07-15 20:22       ` [PATCH v4 4/4] add-patch: render hunks through the pager Rubén Justo
  -- strict thread matches above, loose matches on Subject: below --
2024-07-23  0:39 [PATCH v2 0/2] add-p P fixups Rubén Justo
2024-07-23  9:15 ` Phillip Wood
2024-07-23 22:08   ` Rubén Justo
2024-07-24 15:21     ` phillip.wood123
2024-07-24 16:12       ` Rubén Justo
2024-07-25  9:45         ` Phillip Wood
2024-07-25 12:16           ` Rubén Justo
2024-07-25 13:42             ` [PATCH 0/4] squash fixups in rj/add-p-pager Rubén Justo
2024-07-25 13:44               ` [PATCH 4/4] add-patch: render hunks through the pager Rubén Justo

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