[PATCH 7/7] cindex: set -cfg_f field unconditionally for --show

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

There's also no need to local-ize the field, since it's
not going to hold other references and the CodeSearch*
objects are tied to the config file anyways.
---
 lib/PublicInbox/CodeSearchIdx.pm | 5 ++---
 t/cindex-join.t                  | 5 +++++
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/lib/PublicInbox/CodeSearchIdx.pm b/lib/PublicInbox/CodeSearchIdx.pm
index a6cbe0b0..d49e9a8d 100644
--- a/lib/PublicInbox/CodeSearchIdx.pm
+++ b/lib/PublicInbox/CodeSearchIdx.pm
@@ -1131,8 +1131,6 @@ sub init_join_prefork ($) {
 	} split(/,/, join(',', @$subopt));
 	require PublicInbox::CidxXapHelperAux;
 	require PublicInbox::XapClient;
-	my $cfg = $self->{-opt}->{-pi_cfg} // die 'BUG: -pi_cfg unset';
-	$self->{-cfg_f} = $cfg->{-f} = rel2abs_collapsed($cfg->{-f});
 	my @unknown;
 	my $pfx = $JOIN{prefixes} // 'patchid';
 	for (split /\+/, $pfx) {
@@ -1223,7 +1221,8 @@ sub cidx_run { # main entry point
 				$PublicInbox::SearchIdx::BATCH_BYTES;
 	local $MAX_SIZE = $self->{-opt}->{max_size};
 	local $self->{PENDING} = {}; # used by PublicInbox::CidxXapHelperAux
-	local $self->{-cfg_f};
+	my $cfg = $self->{-opt}->{-pi_cfg} // die 'BUG: -pi_cfg unset';
+	$self->{-cfg_f} = $cfg->{-f} = rel2abs_collapsed($cfg->{-f});
 	if (grep { $_ } @{$self->{-opt}}{qw(prune join)}) {
 		require File::Temp;
 		$TMPDIR = File::Temp->newdir('cidx-all-git-XXXX', TMPDIR => 1);
diff --git a/t/cindex-join.t b/t/cindex-join.t
index 8d0b09d2..323d69c6 100644
--- a/t/cindex-join.t
+++ b/t/cindex-join.t
@@ -79,4 +79,9 @@ is($out->{join_data}->{dt}->[0], '19700101'.'000000',
 ok run_script([qw(-cindex -v --all -u --join --show),
 		'-d', $cidxdir], $env, $rdr), 'incremental --join';
 
+ok run_script([qw(-cindex -v --no-scan --show),
+		'-d', $cidxdir], $env, $rdr), 'show';
+$out = PublicInbox::Config->json->decode($cout);
+is ref($out->{join_data}), 'HASH', 'got hash join data';
+is $cerr, '', 'no warnings or errors in stderr w/ --show';
 done_testing;