hanyeguxing

@echo off&setlocal enableDelayedExpansion
set ".a=1"2"
set ".b=%.a:"=%"
set ".c="1"
set ".d=1""
set ".#=""
set.
if "!.a!"=="!.b!" (echo .a无) else echo .a有
if "!.c:~0,1!"=="!.#!" (echo .c首有) else echo .c首无
if "!.d:~-1!"=="!.#!" (echo .d尾有) else echo .d尾无
pause
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