Performance: Eliminate Regex overhead in AvoidTrailingWhitespace -> Speedup of 5% (PowerShell 5.1) or 2.5 % (PowerShell 7.1-preview.2) by bergmeister · Pull Request #1465

Performance: Eliminate Regex overhead in AvoidTrailingWhitespace -> Speedup of 5% (PowerShell 5.1) or 2.5 % (PowerShell 7.1-preview.2) by bergmeister · Pull Request #1465 · PowerShell/PSScriptAnalyzer

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My thinking here is actually just that PowerShell uses that API to see whitespace.

Given how we split the string already, it's possibly dangerous to go by unicode whitespace, but possibly not...

I suspect that really this won't make much difference; leaving non-ASCII whitespace at the ends of lines isn't something I can imagine being an issue for anyone really.