From 6e5e272b68f41c99fdef0109698cf725d2f16e1f Mon Sep 17 00:00:00 2001
From: pd3 <pd3@sanger.ac.uk>
Date: Sat, 25 Jan 2025 12:26:24 +0100
Subject: [PATCH] Make it possible to test for VCF_REF as declared in the
 documentation

Currently bcf_has_variant_types always returns 0 when testing for
the presence of VCF_REF, regardless of the actual type
---
 vcf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/vcf.c b/vcf.c
index f22f4450d..549fcb710 100644
--- a/vcf.c
+++ b/vcf.c
@@ -5161,6 +5161,7 @@ int bcf_has_variant_types(bcf1_t *rec, uint32_t bitmask,
         else return bitmask & type;
     }
     // mode == bcf_match_exact
+    if ( bitmask==VCF_REF ) return type==bitmask ? 1 : 0;
     return type==bitmask ? type : 0;
 }