Not an answer to your original question, but that generated regex looks wrong to me? One of the first level alternations deobfuscates to 

(?:create 
    (?: t(?:able|rigger)
    | function
    | default
    | pro[cedure]
    | rule
    | view
    )

[download]

Which all looks fairly sane and familiar except for pro[cedure] which is looking to accept 

create (?:proc|proe|prod|prou|pror|proe)

[download]

Which I guess could be true, but it seems more likely that it should be 

create proc(?:edure)?

[download]

Maybe a patch for Regex::List is called for?

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In reply to Re: Most recent pattern match by BrowserUk
in thread Most recent pattern match by Anonymous Monk

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