[文本处理] [已解决]批处理比对两个文本文件出错了，求助问题出在那？

gawk "NR==FNR{if(!($0 in T)){a[++i]=$0;T[$0]=1}next}!($0 in T){a[++i]=$0;T[$0]=2;next}$0 in T{if(T[$0]==1){T[$0]=3}}END{for(j=0;j++<i;){if(0+T[a[j]]<3){print a[j]}}}" Full.txt BiDui.txt>out.txt
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棕颈鸭
丑鸭
弗氏鸥
黑顶林莺
灰翅鸥
梯氏鸫
细纹苇莺
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gawk "NR==FNR{a[$0]++;next}!a[$0]++" BiDui.txt Full.txt>out.txt
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@echo off
mode con cols=60 lines=41
chcp 65001
set "file1=1.txt"
set "file2=2.txt"
call :1 "%file1%" "%file2%"
call :1 "%file2%" "%file1%"
pause>nul & exit

	:1
	setlocal
	set n=0
	echo 以下字符串 仅在 %~2 中存在
	for /f "usebackq delims=" %%a in ("%~1") do (
			set _"%%a"=1
	)
	for /f "usebackq delims=" %%a in ("%~2") do (
			if not defined _"%%a" (
					echo %%a
					set /a n+=1
			)
	)
	echo Total number of bird species: %n%
	echo=&echo=
	endlocal
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