Depending on what exactly we want to achieve, here are the two NppExec's scripts that can be used to run Lua:
// Lua in NppExec's Console set local Lua = C:\Lua\bin\lua.exe // <-- specify your path to Lua here! npp_save // saves the current .lua file "$(Lua)" "$(FULL_CURRENT_PATH)" // runs it
and
// Lua in a separate console window set local Lua = C:\Lua\bin\lua.exe // <-- specify your path to Lua here! npp_save // saves the current .lua file npp_run cmd /c ""$(Lua)" "$(FULL_CURRENT_PATH)" && pause" // runs it