:0 $!N $!b0 s/[^Y]/y/g s/$/\x090/ : h /^Y/s/.*\x09//p g s/.*\x09/0/ y/0123456789/1234567890/ x s/.// G s/[0-8]\?9*\n.*\([^0]0*$\)/\1/ /^\x09/Q b
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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