1 files changed, 7 insertions, 1 deletions
diff --git a/src/roff/grog/grog.pl b/src/roff/grog/grog.pl
index da31514b..57cd1594 100644
--- a/src/roff/grog/grog.pl
+++ b/src/roff/grog/grog.pl
@@ -13,7 +13,8 @@ push(@command, "groff");
 while ($ARGV[0] =~ /^-./) {
     $arg = shift(@ARGV);
     $sp = "" if $arg eq "-C";
-    &usage(0) if $arg eq "-v";
+    &usage(0) if $arg eq "-v" || $arg eq "--version";
+    &help() if $arg eq "--help";
     last if $arg eq "--";
     push(@command, $arg);
 }
@@ -133,6 +134,11 @@ sub usage {
     exit $exit_status;
 }
 
+sub help {
+    print "usage: grog [ option ...] [files...]\n";
+    exit 0;
+}
+
 if ($pic || $tbl || $eqn || $grn || $grap || $refer) {
     $s = "-";
     $s .= "s" if $soelim;