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On 1 May 2017 at 06:35, Tony Papadimitriou <tonyp@acm.org> wrote: > - if (firstline && b[0] == '=') /* for compatibility with 5.2, ... */ > - lua_pushfstring(L, "return %s", b + 1); /* change '=' to 'return' */ As you might have noticed: using '=' at the start of a line is deprecated in the 5.3 REPL.