nstdio opened a new pull request #496: Avoid unnecessary allocation in wrapIfMissing. URL: https://github.com/apache/commons-lang/pull/496 Now `StringUtils#wrapIfMissing(String, char)` and `StringUtils#wrapIfMissing(String, String)` does not allocate buffer when input is already wrapped. Here are the benchmark results on my machine: ``` Benchmark (input) Mode Samples Score Score error Units optimized /should not be wrapped/ thrpt 20 357.849 4.525 ops/us optimized should be wrapped thrpt 20 33.779 0.246 ops/us original /should not be wrapped/ thrpt 20 35.581 0.236 ops/us original should be wrapped thrpt 20 33.671 0.360 ops/us ```
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