43 static lua_Integer u_posrelat (lua_Integer pos, size_t len) {  in u_posrelat()
46   else return (lua_Integer)len + pos + 1;  in u_posrelat()
93   lua_Integer n = 0;  /* counter for the number of characters */  in utflen()
96   lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);  in utflen()
97   lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len);  in utflen()
99   luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2,  in utflen()
101   luaL_argcheck(L, --posj < (lua_Integer)len, 3,  in utflen()
125   lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);  in codepoint()
126   lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len);  in codepoint()
131   luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of bounds");  in codepoint()
186   lua_Integer n  = luaL_checkinteger(L, 2);  in byteoffset()
187   lua_Integer posi = (n >= 0) ? 1 : len + 1;  in byteoffset()
189   luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3,  in byteoffset()
208        while (n > 0 && posi < (lua_Integer)len) {  in byteoffset()
227   lua_Integer n = lua_tointeger(L, 2) - 1;  in iter_aux()
230   else if (n < (lua_Integer)len) {  in iter_aux()
234   if (n >= (lua_Integer)len)  in iter_aux()