treewide: s/sequential_shard/sequential-shard/g

The underscore variant was never documented and maintaining
the difference between the command-line and internal hash
is not worth it.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm
index 4c1accbb..025487d2 100644
--- a/lib/PublicInbox/V2Writable.pm
+++ b/lib/PublicInbox/V2Writable.pm
@@ -1279,7 +1279,7 @@ sub index_todo ($$$) {
 
 sub xapian_only {
         my ($self, $opt, $sync, $art_beg) = @_;
-        my $seq = $opt->{sequential_shard};
+        my $seq = $opt->{'sequential-shard'};
         $art_beg //= 0;
         local $self->{parallel} = 0 if $seq;
         $self->idx_init($opt); # acquire lock
@@ -1329,7 +1329,7 @@ sub index_sync {
         }
 
         my $pr = $opt->{-progress};
-        my $seq = $opt->{sequential_shard};
+        my $seq = $opt->{'sequential-shard'};
         my $art_beg; # the NNTP article number we start xapian_only at
         my $idxlevel = $self->{ibx}->{indexlevel};
         local $self->{ibx}->{indexlevel} = 'basic' if $seq;