* archival/gzip.c (ifname, ofname): Delete.
(gzip_main): Handle multiple files.
* include/usage.h (gzip_trivial_usage): Allow multiple FILEs.
(gzip_full_usage): Ditto.
* testsuite/gzip/gzip-accepts-multiple-files: New.
* testsuite/gzip/gzip-removes-original-file: New.
diff --git a/testsuite/gzip/gzip-accepts-multiple-files b/testsuite/gzip/gzip-accepts-multiple-files
new file mode 100644
index 0000000..8f0d9c8
--- /dev/null
+++ b/testsuite/gzip/gzip-accepts-multiple-files
@@ -0,0 +1,3 @@
+touch foo bar
+busybox gzip foo bar
+test -f foo.gz -a -f bar.gz
diff --git a/testsuite/gzip/gzip-removes-original-file b/testsuite/gzip/gzip-removes-original-file
new file mode 100644
index 0000000..b9cb995
--- /dev/null
+++ b/testsuite/gzip/gzip-removes-original-file
@@ -0,0 +1,3 @@
+touch foo
+busybox gzip foo
+test ! -f foo