From 8ce353bf1b101f71475cec21ccec579ffb09eab8 Mon Sep 17 00:00:00 2001
From: Nikhil Anand <mail@nikhil.io>
Date: Tue, 25 Apr 2023 19:27:42 -0500
Subject: [PATCH] Sanity check for CLI args

---
 VERSION      | 2 +-
 constants.go | 1 +
 main.go      | 4 ++++
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/VERSION b/VERSION
index 4395fc0..c1f1353 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.0.0-beta.01
+5.1.0-beta
diff --git a/constants.go b/constants.go
index bfe2338..37acdb2 100644
--- a/constants.go
+++ b/constants.go
@@ -31,6 +31,7 @@ const (
 	EXIT_COULD_NOT_GENERATE_LIST_OF_ENTITIES
 	EXIT_COULD_NOT_WRITE_ENTITY_TREE
 	EXIT_COULD_NOT_CREATE_OUTPUT_FOLDER
+	EXIT_INVALID_FLAG_SUPPLIED
 )
 
 // Things to ignore when walking the article repository. NOTE: In Golang, only
diff --git a/main.go b/main.go
index 9b7f180..afe0b02 100644
--- a/main.go
+++ b/main.go
@@ -101,6 +101,10 @@ func main() {
 			fmt.Println(help)
 			os.Exit(0)
 
+		default:
+			fmt.Println("I don't know what this means:", arg)
+			fmt.Println("Use --help to see usage.")
+			os.Exit(EXIT_INVALID_FLAG_SUPPLIED)
 		}
 	}