gzip -k not documented (was: Re: gzip keep input files patch)

Frantisek Holop noticed (on the OpenBSD lists) that gzip's -k is
undocumented in NetBSD.  Patch below.


--- usr.bin/gzip/gzip.1.orig
+++ usr.bin/gzip/gzip.1
@@ -128,6 +128,10 @@ with the
 option, allowing non-compressed data to pass through unchanged.
 .It Fl h , -help
 This option prints a usage summary and exits.
+.It Fl k , -keep
+This option prevents
+.Nm
+from deleting input files after (de)compression.
 .It Fl l , -list
 This option displays information about the file's compressed and
 uncompressed size, ratio, uncompressed name.