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-rw-r--r--src/lstrlib.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lstrlib.js b/src/lstrlib.js
index 1294baa..2e623b6 100644
--- a/src/lstrlib.js
+++ b/src/lstrlib.js
@@ -366,7 +366,7 @@ const str_format = function(L) {
concat(b, s); /* keep entire string */
lapi.lua_pop(L, 1); /* remove result from 'luaL_tolstring' */
} else { /* format the string into 'buff' */
- concat(b, s);
+ concat(b, lua.to_luastring(sprintf(String.fromCharCode(...form), str.jsstring())));
lapi.lua_pop(L, 1); /* remove result from 'luaL_tolstring' */
}
}