: s/<\(.*\)>$`/\1<\1$`>/ t s/\(<.*\)>\(\($'\)\(.*\)\|\(.\)\)/\4\5\1\3\5>\4/ t s/.//51g p s/^/<>/ /\$/b d
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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