Re: [PATCH v3 4/4] add-patch: render hunks through the pager

["Rubén Justo" <rjusto@gmail.com>]

Squashing this fixes the test:

--->8---

diff --git a/t/t3701-add-interactive.sh b/t/t3701-add-interactive.sh
index c60589cb94..bb360c92a0 100755
--- a/t/t3701-add-interactive.sh
+++ b/t/t3701-add-interactive.sh
@@ -616,7 +616,12 @@ test_expect_success TTY 'P handles SIGPIPE when writing to pager' '
 	test_when_finished "rm -f huge_file; git reset" &&
 	printf "\n%2500000s" Y >huge_file &&
 	git add -N huge_file &&
-	test_write_lines P q | GIT_PAGER="head -n 1" test_terminal git add -p
+	test_write_lines P q |
+	(
+		GIT_PAGER="head -n 1" &&
+		export GIT_PAGER &&
+		test_terminal git add -p >actual
+	)
 '
---8<---

However, this error has exposed a problem: calling `wait_for_pager` if
`setup_pager` hasn't worked is an issue that needs to be addressed in this
series: `setup_pager` should return a result.  I was planning to do that
in a future series, for the other commented command: `|[cmd]`.

I'm wondering if the best way to proceed here is to revert to: 

diff --git a/pager.c b/pager.c
index 5f0c1e9cce..5586e751dc 100644
--- a/pager.c
+++ b/pager.c
@@ -46,6 +46,8 @@ static void wait_for_pager_atexit(void)

 void wait_for_pager(void)
 {
+	if (old_fd1 == -1)
+		return;
 	finish_pager();
 	sigchain_pop_common();
 	unsetenv("GIT_PAGER_IN_USE");

Which resolves the problem.

This was a change already commented here:

https://lore.kernel.org/git/3f085795-79bd-4a56-9df8-659e32179925@gmail.com/