options() public

Returns the set of bits corresponding to the options used when creating this Regexp (see Regexp::new for details. Note that additional bits may be set in the returned options: these are used internally by the regular expression code. These extra bits are ignored if the options are passed to Regexp::new.

Regexp::IGNORECASE                  #=> 1
Regexp::EXTENDED                    #=> 2
Regexp::MULTILINE                   #=> 4

/cat/.options                       #=> 0
/cat/ix.options                     #=> 3
Regexp.new('cat', true).options     #=> 1
/\xa1\xa2/e.options                 #=> 16

r = /cat/ix
Regexp.new(r.source, r.options)     #=> /cat/ix
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