引数は行末まで１個のみ
もう嫌気がさしたのでこれ以上はやめとく
@echo off
set a=%*"
set /a b=0,c=0
setlocal enabledelayedexpansion
:x
set d="!a:~%b%,1!!a:~%b%,1!"
if !d!=="" goto y
if !d!=="""" set /a c+=1
if !d!==";;" set /a c+=1
set /a b+=1 & goto x
:y
endlocal & set c=%c%
set "e=FALSE" & if %c% gtr 1 (goto z) else set "a=%*"
for /f "delims=-+0123456789 tokens=*" %%i in ("%a%") do (
set "a=%%i" & if not defined a set "e=TRUE"
)
:z
echo %e%
