instance method

Regexp#casefold?

() -> bool

casefold?→ true or false

static VALUE
rb_reg_casefold_p(VALUE re)
{
    rb_reg_check(re);
    return RBOOL(RREGEXP_PTR(re)->options & ONIG_OPTION_IGNORECASE);
}

Returns true if the case-insensitivity flag in self is set, false otherwise:

Example

/a/.casefold?           # => false
/a/i.casefold?          # => true
/(?i:a)/.casefold?      # => false

See also #as_json #encoding #~ #eql? also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0