Golf:

$_ = '--BBB----BB--B-------B--B--BBBB---B--';

s/-+/--$|x$&=~y---c/ge;y/B10/Mio/;

say;

[download]

Out:

iiMMMooooMMiiMoooooooMiiMooMMMMiiiMoo

[download]

In reply to Re: Tips on how to perform this substitution? by Anonymous Monk
in thread Tips on how to perform this substitution? by Anonymous Monk

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