space separation under /x flag seems to do the job 
  DB<113> $_="AAAA";  $c="A"; $min=3; /$c {$min}/x; $&
 => "AAA"

[download]
UPDATE
TIMTOWTDI 
  DB<108> $c="A";$min=3
 => 3

  DB<109> "AAAAA" =~ m/${c}{$min}/;  $&
 => "AAA"

[download]

In reply to Re: variable quantifiers? (TIMTOWTDI) by LanX
in thread variable quantifiers? by FryingFinn

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