From 7c5ad95675d34c794774472d19641b0c809706d3 Mon Sep 17 00:00:00 2001
From: Ruben Vorderman <r.h.p.vorderman@lumc.nl>
Date: Tue, 23 Jan 2024 13:42:20 +0100
Subject: [PATCH] Make sure threads are passed to igzip_threaded if specified

---
 src/xopen/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/xopen/__init__.py b/src/xopen/__init__.py
index 65431b1..e54fcc4 100644
--- a/src/xopen/__init__.py
+++ b/src/xopen/__init__.py
@@ -495,7 +495,7 @@ def _open_gz(filename, mode: str, compresslevel, threads):  # noqa: C901
                 filename,
                 mode,
                 compresslevel,
-                threads=1,
+                threads=threads or 1,
             )
         if gzip_ng_threaded and zlib_ng:
             try: