1 files changed, 8 insertions, 6 deletions

diff --git a/length.c b/length.c
index 284bbfdf9..f2dadd25c 100644
--- a/length.c
+++ b/length.c
@@ -3,11 +3,13 @@
 #include <string.h>
 #include <stdio.h>
 
-const char                      length_usage[] = "length string";
-
-int
-length_main(struct FileInfo * i, int argc, char * * argv)
+extern int
+length_main(int argc, char * * argv)
 {
-        printf("%d\n", strlen(argv[1]));
-        return 0;
+    if ( **(argv+1) == '-' ) {
+        fprintf(stderr, "Usage: length string\n");
+        exit(FALSE);
+    }
+    printf("%d\n", strlen(argv[1]));
+    return( TRUE);
 }