Allow reading from standard input

diff --git a/util/ncgg/main.c b/util/ncgg/main.c
index 5ab322b..f0b992e 100644 (file)
--- a/util/ncgg/main.c
+++ b/util/ncgg/main.c
@@ -34,8 +34,11 @@ main(argc,argv) char **argv; {
                        exit(-1);
                }
                filename = argv[1];
+       }
+       else if (argc == 1) {
+               filename = "";
        } else
-               error("Usage: %s [-c] [-d] [-v] table",argv[0]);
+               error("Usage: %s [-c] [-d] [-v] [table]",argv[0]);
        initemhash();
        enterkeyw();
        initnodes();