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-rw-r--r--spec/util_format_spec.lua4
1 files changed, 4 insertions, 0 deletions
diff --git a/spec/util_format_spec.lua b/spec/util_format_spec.lua
index d58c25aa..8d6ba8ad 100644
--- a/spec/util_format_spec.lua
+++ b/spec/util_format_spec.lua
@@ -20,5 +20,9 @@ describe("util.format", function()
assert.equal("␁", format("%s", "\1"));
end);
+ it("escapes invalid UTF-8", function ()
+ assert.equal("\"Hello w\\195rld\"", format("%s", "Hello w\195rld"));
+ end);
+
end);
end);