).
.TP
.B \-S .suf --suffix .suf
-Use suffix .suf instead of .gz. Any suffix can be given, but suffixes
+When compressing, use suffix .suf instead of .gz.
+Any non-empty suffix can be given, but suffixes
other than .z and .gz should be avoided to avoid confusion when files
-are transferred to other systems. A null suffix forces gunzip to try
-decompression on all given files regardless of suffix, as in:
+are transferred to other systems.
- gunzip -S "" * (*.* for MSDOS)
+When decompressing, add .suf to the beginning of the list of
+suffixes to try, when deriving an output file name from an input file name.
-Previous versions of gzip used
-the .z suffix. This was changed to avoid a conflict with
.IR pack "(1)".
.TP
.B \-t --test