Add usage and long optionsHEADmaster

1 files changed, 7 insertions, 2 deletions

diff --git a/argv.c b/argv.c
index 7c879ac..d6af492 100644
--- a/argv.c
+++ b/argv.c
@@ -1,6 +1,8 @@
 #include <stdio.h>
 #include <string.h>
 
+static const char usage[] = "argv [-n] [-0] [-d CHAR] [--] [ARG ...]";
+
 int
 main(int argc, const char **argv)
 {
@@ -13,9 +15,12 @@ main(int argc, const char **argv)
 			break;
 		} else if (!strcmp(*arg, "-n")) {
 			endchar = 0;
-		} else if (!strcmp(*arg, "-d")) {
+		} else if (!strcmp(*arg, "-h") || !strcmp(*arg, "--help")) {
+			puts(usage);
+			return 0;
+		} else if (!strcmp(*arg, "-d") || !strcmp(*arg, "--delim")) {
 			if (!*++arg) {
-				fprintf(stderr, "Missing arg for -d\n");
+				fputs(usage, stderr);
 				return 1;
 			}
 			delim = **++arg;