1 files changed, 18 insertions, 0 deletions
diff --git a/arg.h b/arg.h
new file mode 100644
index 0000000..8f93ee1
--- /dev/null
+++ b/arg.h
@@ -0,0 +1,18 @@
+#define ARGBEGIN \
+	for (;;) { \
+		++argv, --argc; \
+		if (argc == 0 || (*argv)[0] != '-') \
+			break; \
+		if ((*argv)[1] == '-' && !(*argv)[2]) { \
+			++argv, --argc; \
+			break; \
+		} \
+		for (char *opt_ = &(*argv)[1], done_ = 0; !done_ && *opt_; ++opt_) { \
+			switch (*opt_)
+
+#define ARGEND \
+		} \
+	}
+
+#define EARGF(x) \
+	(done_ = 1, *++opt_ ? opt_ : argv[1] ? --argc, *++argv : ((x), abort(), NULL))