• Problem

Question related to mission Unix Match. Part 2

 
Can someone clarify for me the difference between this two cases:
      Your result:True
      seq without any chars will never match
      Right result:False
      Fail:unix_match("nametxt","name[]txt")    
and
  Your result:False
  Right result:True
  Fail:unix_match("checkio","[c[]heckio")