From a2d7181700ac64b8e7a4472ec26dfa253b38f188 Mon Sep 17 00:00:00 2001
From: Lexi Winter <lexi@le-fay.org>
Date: Sat, 28 Jun 2025 19:25:55 +0100
Subject: split nihil into separate modules

---
 nihil.cli/usage_error.ccm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 nihil.cli/usage_error.ccm

(limited to 'nihil.cli/usage_error.ccm')

diff --git a/nihil.cli/usage_error.ccm b/nihil.cli/usage_error.ccm
new file mode 100644
index 0000000..11646e6
--- /dev/null
+++ b/nihil.cli/usage_error.ccm
@@ -0,0 +1,24 @@
+/*
+ * This source code is released into the public domain.
+ */
+
+module;
+
+#include <string>
+
+export module nihil.cli:usage_error;
+
+import nihil.error;
+
+namespace nihil {
+
+/*
+ * Exception thrown to indicate invalid command-line arguments.
+ */
+export struct usage_error : error {
+	usage_error(std::string_view what) : error(what) {}
+};
+
+} // namespace nihil
+
+
-- 
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