Function lua_pushlstring

3rd/lua-5.4.3/src/lapi.c:520–529

** Pushes on the stack a string with given length. Avoid using 's' when ** 'len' == 0 (as 's' can be NULL in that case), due to later use of ** 'memcmp' and 'memcpy'. */

** 'memcmp' and 'memcpy'.
*/
LUA_API const char *lua_pushlstring (lua_State *L, const char *s, size_t len) {
  TString *ts;
  lua_lock(L);
  ts = (len == 0) ? luaS_new(L, "") : luaS_newlstr(L, s, len);
  setsvalue2s(L, L->top, ts);
  api_incr_top(L);
  luaC_checkGC(L);
  lua_unlock(L);
  return getstr(ts);
}


LUA_API const char *lua_pushstring (lua_State *L, const char *s) {