#if substituting non-alphabetics: 
s/("SAd"Boy)/
  my($s,$b)=($1,"'bad'girl");
  substr($s,-1) x= length$b;
  (lc$s^$s)&(lc$b^uc$b)^lc$b
/ieg

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In reply to Re: Case-sensitive substitution with case-insensitive matches by I0
in thread Case-sensitive substitution with case-insensitive matches by Anonymous Monk

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