lua block parsing inside macro is not aware of being inside lua block, applying sjasmplus parsing rules (colons!) about sjasmplus HOT 1 OPEN

		DEVICE ZXSPECTRUM48

		ORG 32768

		; three ways to detect length of a file using LUA

		; 1. direct LUA (this works)
	LUA PASS3
		local f = io.open("macro_lua.asm", "rb")
		local file_len = f:seek("end")
		f.close(f)
		print("'macro_lua.asm' is " .. file_len .. " bytes long")
	ENDLUA

		; 2. LUA inside of macro (this does not work)
	MACRO LUA.FileLength1
	LUA PASS3
		local f = io.open("macro_lua.asm", "rb")
		local file_len = f:seek("end")
		f.close(f)
		print("'macro_lua.asm' is " .. file_len .. " bytes long")
	ENDLUA
	ENDM
		; LUA.FileLength1

		; if line above is uncommented, the following error message is generated:
		; macro_lua.asm(20): error: [LUA] attempt to call a nil value (global 'seek')
		; macro_lua.asm(24): ^ emitted from here

		; 3. a temporary work around for the above problem (it works)
	MACRO LUA.FileLength2
	LUA PASS3
		local f = io.open("macro_lua.asm", "rb")
		local file_len = f.seek(f, "end")	--; explicit call to the class method avoids using colon
		f.close(f)
		print("'macro_lua.asm' is " .. file_len .. " bytes long")
	ENDLUA
	ENDM
		LUA.FileLength2