diff --git a/src/filters/rcluncomp.py b/src/filters/rcluncomp.py
new file mode 100644
index 00000000..a354fe78
--- /dev/null
+++ b/src/filters/rcluncomp.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+from __future__ import print_function
+
+import rclexecm
+import sys
+import os
+import shutil
+import platform
+import subprocess
+import glob
+
+sysplat = platform.system()
+
+if sysplat != "Windows":
+    print("rcluncomp.py: only for Windows", file = sys.stderr)
+
+sevenz = rclexecm.which("7z")
+if not sevenz:
+    print("rcluncomp.py: can't find 7z exe. Maybe set recollhelperpath " \
+          "in recoll.conf ?", file=sys.stderr)
+    sys.exit(1)
+#print("rcluncomp.py: 7z is %s" % sevenz, file = sys.stderr)
+
+# Params: uncompression program, input file name, temp directory.
+# We ignore the uncomp program, and always use 7z on Windows
+
+infile = sys.argv[2]
+outdir = sys.argv[3]
+
+# There is apparently no way to suppress 7z output. Hopefully the
+# possible deadlock described by the subprocess module doc can't occur
+# here because there is little data printed. AFAIK nothing goes to stderr anyway
+subprocess.check_output([sevenz, "e", "-bd", "-y", "-o" + outdir, infile],
+                        stderr = subprocess.PIPE)
+
+outputname = glob.glob(os.path.join(outdir, "*"))
+# There should be only one file in there..
+print(outputname[0])