Interestingly, on my machine: 
                   Rate length_subst         match         subst trans
+literation
length_subst     2864/s           --          -89%          -90%      
+      -97%
match           25687/s         797%            --          -13%      
+      -74%
subst           29356/s         925%           14%            --      
+      -70%
transliteration 98682/s        3346%          284%          236%      
+        --

[download]

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

In reply to Re^3: Confused by RegEx count by choroba
in thread Confused by RegEx count by Melly

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