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I mean Lua reserved words. In fact, my C module accepts strings from Lua and I need to determine if they are reserved words; they are essentially TString objects. So if I can get the TString object, I can determine it directly, Instead of comparing them with a reserved words list, which is costly. I think it might be better for Lua to provide a function such as `luaL_isreserved(lua_State *L, int idx)`.

On 3/31/2020 16:00, Sean Conner wrote:
It was thus said that the Great Huang Luyu once stated:
Hi all,

I want to write a C module for Lua, which needs determine if a string is a
reserved word.
   What do you mean be a "reserved word"?  For Lua?  For C?  The best bet is
to just check a list of words since there aren't that many reserved words in
either language.  Lua has around 20+ words (depends upon version) and C has
around 30+ words (again, depends upon version).