Quantifier for Ruby regex grouping -


I need a rabies reggae so that 11 groups can be separated by underscores, but more than 11 underscore. I need constant underscores to be understood as a "blank" group even though I have so far that & gt; 11 underscore points: 

  / ^ (dw | lat) \ _ (. *) \ _ (Track-search | text-ed) \ _ (. *) \ _ (. *) \ _ (. *) \ _ (. *) \ _ (. *) \ _ (. *) \ _ (. *) $ /   
 here Some examples are test cases.  
 must match:  
 
 lat_march madness update_Paid-search_subscription-one_google_ncaa-tournament_ {adid} _p__March172014_2   
 But not match: < / p> 
 
 lat_los angeles_Paid- search_nami-media_adn_jgYno0gS7yYjNq8OT7n_LcgTN9nt6vrmbC9qlcp __- 21150_49996_7006_April22014_4   
 
 
 Change your  (. *)  to  ([^ _] *) . From this  but   _  will create a character square, and it will match 0 + times. In this way, the code is counted as the  _  capture group, but only one delimiters, besides,  _  is not a reserved character, therefore it is not necessary to avoid it. Last:  
  ^ (dw | lat) _ ([^ _] *) _ (Paid-search | text-ed) _ ([^ _] *) _ ([^ _] *) _ ([^ _] *) _ ([^ _] *) _ ([^ _] *) _ ([^ _] *) _ ([^ _] *) _ ([^ _] *) $   
 
  Update:   
 If you do not need to match your previous 8 capture groups, you clear Also forward:  
  ^ (dw | lat) _ ([^ _] *) _ (Paid-search | text-ed) (?: _ [^ _] *) {8} $   
 It just takes the final pattern and repeats it 8 times though, if you try to capture  [^ _] *  , Then of this L will miss the final event as the fourth capturing group (instead of remembering all 8).

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