[PATCH 2/2] XapHelper.pm: fix QP_FLAGS initialization

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

We can't use $PublicInbox::Search::QP_FLAGS until after
load_xapian is called.  Failure to set the correct query parser
flags was causing failures in
`PI_NO_CXX=1 TEST_DAEMON_XH=-X0 prove -bw t/imapd.t'
since phrase parsing was broken with the Perl bindings
XapHelper implementation.

Now, the `check-xh0' and `check-xh1' targets both pass with
PI_NO_CXX=1 set to disable the C++ xap_helper.

Fixes: fa6a7919 (xap_helper: enable FLAG_PURE_NOT in external process, 2025-02-23)
---
 lib/PublicInbox/XapHelper.pm | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/PublicInbox/XapHelper.pm b/lib/PublicInbox/XapHelper.pm
index 8f3e7e84..54e2c174 100644
--- a/lib/PublicInbox/XapHelper.pm
+++ b/lib/PublicInbox/XapHelper.pm
@@ -20,7 +20,7 @@ use Carp qw(croak);
 my $X = \%PublicInbox::Search::X;
 our (%SRCH, %WORKERS, $nworker, $workerset, $in, $SHARD_NFD, $MY_FD_MAX);
 our $stderr = \*STDERR;
-my $QP_FLAGS = $PublicInbox::Search::QP_FLAGS;
+my $QP_FLAGS;
 
 sub cmd_test_inspect {
 	my ($req) = @_;
@@ -338,6 +338,8 @@ sub start (@) {
 
 	local (%SRCH, %WORKERS, $SHARD_NFD, $MY_FD_MAX);
 	PublicInbox::Search::load_xapian();
+	$QP_FLAGS = $PublicInbox::Search::QP_FLAGS |
+		PublicInbox::Search::FLAG_PURE_NOT();
 	$GLP->getoptionsfromarray(\@argv, my $opt = { j => 1 }, 'j=i') or
 		die 'bad args';
 	local $workerset = POSIX::SigSet->new;
@@ -349,7 +351,6 @@ sub start (@) {
 		die "E: unable to get RLIMIT_NOFILE: $!";
 	warn "W: RLIMIT_NOFILE=$MY_FD_MAX too low\n" if $MY_FD_MAX < 72;
 	$MY_FD_MAX -= 64;
-	$QP_FLAGS |= PublicInbox::Search::FLAG_PURE_NOT();
 
 	local $nworker = $opt->{j};
 	return recv_loop() if $nworker == 0;