[rakudo]: Optimize flattening a bit further. When splicing in a flattened element, we don't need to re-flatten the things we just spliced in.
[rakudo]: Optimize flattening a bit further.
When splicing in a flattened element, we don't need to
re-flatten the things we just spliced in.


git-svn-id: ebc29296f9ec9cd27706eb0497c26fede0e190b2@33896 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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