Just a comparison. $^O eq 'linux': 
0.254748821258545
0.255423069000244
v5.26.1

0.514794111251831
0.481626033782959
v5.37.3

[download]

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re: Substitution unexpectedly very slow, in Strawberry by choroba
in thread Substitution unexpectedly very slow, in Strawberry by Anonymous Monk

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