[PATCH 09/18] spawn: don't append to scalarrefs on stdout/stderr

[Eric Wong <e@80x24.org>]

None of our current code relies on it, and I can't imagine it's
something we'd need in the future, actually...  This keeps the
door open for relying more on Spawn in TestCommon.
---
 lib/PublicInbox/Spawn.pm | 2 +-
 t/spawn.t                | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/PublicInbox/Spawn.pm b/lib/PublicInbox/Spawn.pm
index 849438bc..9c680690 100644
--- a/lib/PublicInbox/Spawn.pm
+++ b/lib/PublicInbox/Spawn.pm
@@ -401,7 +401,7 @@ sub read_out_err ($) {
 		seek($fh, 0, SEEK_SET);
 		my $dst = $opt->{$fd};
 		$dst = $opt->{$fd} = $dst->[1] if ref($dst) eq 'ARRAY';
-		PublicInbox::IO::read_all $fh, 0, $dst, length($$dst);
+		PublicInbox::IO::read_all $fh, 0, $dst
 	}
 }
 
diff --git a/t/spawn.t b/t/spawn.t
index 3479b6b3..48f541b8 100644
--- a/t/spawn.t
+++ b/t/spawn.t
@@ -26,7 +26,7 @@ require PublicInbox::DS;
 	is($out, 'in', 'stdin read and stdout captured');
 	$opt->{0} = \"IN\n3\nLINES";
 	my @out = run_qx(['sh', '-c', 'echo E >&2; cat'], undef, $opt);
-	is($e, "e\nE\n", 'captured stderr appended to string');
+	is($e, "E\n", 'captured stderr clobbers string');
 	is_deeply(\@out, [ "IN\n", "3\n", 'LINES' ], 'stdout array');
 }