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util.crypto: Use Lua 5.2 API for predictable buffer size In Lua 5.3 LUAL_BUFFERSIZE is a macro computed from sizeof and is thus not known at pre-processing time, so this does not work. Since Lua 5.1 is no longer supported, we can use luaL_prepbuffsize() which is available from Lua 5.2

exclude = {
	"^%./spec/";
}