lei q: fix --import-before default and FIFO output

commit 6c551bffd75afb41d9b5e4774068abe7e06ed0e7
("lei q: --import-augment for mbox and mbox.gz") added a check to
in _pre_augment_mbox for the option being a ref() to distinguish
between default values and user-supplied values (which are
non-ref SCALARs from Getopt::Long).

However, LeiQuery failed to use a SCALAR ref as the default
value, making the check in _pre_augment_mbox useless.  We
now update LeiQuery to use \1 instead of 1 as the default
value so "lei q -f mboxrd ..." to stdout works once again.

Unfortunately, testing with redirects pointed to regular
files didn't trigger the code paths being updated.  Testing
with a FIFO revealed further bugs in the FIFO handling code
which are also fixed in this commit.

We'll also update the $lei->out error message to be
less-specific about "stdout" and use the term "output", instead,
since LeiToMail replaces stdout for all mbox outputs.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/LeiQuery.pm b/lib/PublicInbox/LeiQuery.pm
index 493a8382..623b92cd 100644
--- a/lib/PublicInbox/LeiQuery.pm
+++ b/lib/PublicInbox/LeiQuery.pm
@@ -52,7 +52,7 @@ sub lei_q {
         my $sto = $self->_lei_store(1);
         my $lse = $sto->search;
         if (($opt->{'import-remote'} //= 1) |
-                        ($opt->{'import-before'} //= 1)) {
+                        (($opt->{'import-before'} //= \1) ? 1 : 0)) {
                 $sto->write_prepare($self);
         }
         if ($opt->{'local'} //= scalar(@only) ? 0 : 1) {