set var {Notif[0]:
some text multiple line
Notif[1]:
multiple line text
Notif[2]:
text again
Notif[3]:
text again
Finish
}
set notifList [regexp -inline -all -nocase {Notif\[\d+?\].*?(?=Notif|Finish)} $var]
puts $notifList
c2V0IHZhciB7Tm90aWZbMF06CnNvbWUgdGV4dCBtdWx0aXBsZSBsaW5lCk5vdGlmWzFdOgptdWx0aXBsZSBsaW5lIHRleHQKTm90aWZbMl06CnRleHQgYWdhaW4KTm90aWZbM106CnRleHQgYWdhaW4KRmluaXNoCn0KCnNldCBub3RpZkxpc3QgW3JlZ2V4cCAtaW5saW5lIC1hbGwgLW5vY2FzZSB7Tm90aWZcW1xkKz9cXS4qPyg/PU5vdGlmfEZpbmlzaCl9ICR2YXJdCnB1dHMgJG5vdGlmTGlzdA==