($\={})=~s/(?<=.).+//&&print+(q/J/,\//=~
/..(\S)/&&$1.$2.($^X=~/.+\/(.)/&&uc($1)))

[download]
Thanks to ikegami (the "/" separator is not always the case with $^X): 
($\={})=~s/(?<=.).+//&&print+(q/J/,\//=~
/..(\S)/&&$1.$2.($^X=~/\W(.)\w+\.?\w*?$/&&uc($1)))

[download]

In reply to ref and JAPH by setebos

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