It looks good. By the way: 
$a=1;
print "Match\n" if "aa1" =~ /^(a)\1$a$/; # not match!

[download]
After interpolation of variables we get the false backlink \11! To all: should I submit a bug report to perl.org?
Serge

In reply to Re^2: How we can separate a backref from a digit? by Serge314
in thread How we can separate a backref from a digit? by Serge314

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