s/ / > / h s/$/#/ : s/[1-9]/&-/g y/123456789/012345678/ s/\(0-*\)\( .*\)\(0-*\)#/\2#_\1\3/ t s/-0-/0/ t /^0\| #\w*_0-/b> /-/b< g;s/>/=/;h :< g;s/>/</;h :> g
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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