aloha20200628

用楼主在4楼提供的样本（存为：样本3行.txt）练了一把纯P脑力操，代码如下存为test.bat
先用字符串替换函数把源文收拾利索，再丢给 for/f 分割器逐项扫描.. 幸亏有变量名字典作为遍历回查存储器，使得代码轻量化...
再用7楼提供的样本文件（下载保存为：样本462行.txt）运行结果输出4370行一楼所求格式化数据，行内分割符为制表符
     test.bat "样本3行.txt">"样本3行.new"
或
     test.bat "样本462行.txt">"样本462行.new"

@echo off
for /f "tokens=1* delims=	" %%1 in (%1) do (
	setlocal enabledelayedexpansion
	set "dn=0" &set "nq=%%1" &set "s=%%2;z" &set "s=!s:*{=!"
	for %%c in ( [,],{,} ) do (set "s=!s:%%c=!")
	for %%a in (!s!) do (
		set "v=%%a" &set "v1=!v:~,1!"
		if "!v1!" geq "0" if "!v1!" leq "9" (
			for %%k in (!n!) do (set "_%%k=!_%%k!	!v!")
			set "lastD=!v!" &set/a "dn+=1"
		) else (
			if !dn! equ 3 (set "nmax=!nmax! !n!") else if !dn! equ 4 (
				if defined nmax for %%k in (!nmax!) do (echo,!_%%k!	!lastD!)
				for %%k in (!n!) do (echo,!_%%k!)
				set "n=0" &set "nmax="
			)
			set/a "n+=1, dn=0" & set "_!n!=!nq!	!v!"
		)
	)
	endlocal
)
exit/b
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