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complete

        # OptionParser::List.complete

(from ruby core)
### Implementation from List
---
    complete(id, opt, icase = false, *pat, &block)

---

Searches list `id` for `opt` and the optional patterns for completion
`pat`. If `icase` is true, the search is case insensitive. The result is
returned or yielded if a block is given. If it isn't found, nil is
returned.



      

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