Just for fun, I'd like to mention the fact that our beloved
JavaScript, in a sense, is a part of both Java and C++!
It is a part of Java in the sense that the standard Java SE
JDK includes an interpreter for a language that is very similar
to JavaScript, and it is a part of C++ insofar that the C++
standard includes ECMA-262 as a normative reference and uses
the ECMA-262 grammar as a default grammar for regular expressions.
(I might have preferred to see /Perl/ regular expressions as
the default, maybe the transition from Perl 5 to Perl 6 has
weakened the Perl-5-REs.)