Add regular expressions.
/a/ + /b/ == /(?-mix:a)(?-mix:b)/
Functionally equivalent to:
/ab/
CREDIT: Tyler Rick
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# File 'lib/core/facets/regexp/op_add.rb', line 12 def +(other) other = Regexp.escape(other) if other.is_a?(String) /#{self}#{other}/ end