X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FLeiExternal.pm;h=30bb1a4579c74d8245d1eec7b66b9687bd526e71;hb=bb0eab1051318528011252866b592735981084a5;hp=851715d7099c4445f29fab429de5b3552075575e;hpb=01a049cadb1080698a447479de806755e9bc9342;p=public-inbox.git

diff --git a/lib/PublicInbox/LeiExternal.pm b/lib/PublicInbox/LeiExternal.pm
index 851715d7..30bb1a45 100644
--- a/lib/PublicInbox/LeiExternal.pm
+++ b/lib/PublicInbox/LeiExternal.pm
@@ -105,7 +105,16 @@ sub get_externals {
 	} else {
 		die("`$loc' is ambiguous:\n", map { "\t$_\n" } @m, "\n");
 	}
-	();
+}
+
+sub canonicalize_excludes {
+	my ($lei, $excludes) = @_;
+	my %x;
+	for my $loc (@$excludes) {
+		my @l = get_externals($lei, $loc, 1);
+		$x{$_} = 1 for @l;
+	}
+	\%x;
 }
 
 # returns an anonymous sub which returns an array of potential results