<i18n dev> RFR: 8302871: Speed up StringLatin1.regionMatchesCI [v7]

[Eirik Bjorsnos]

On Tue, 21 Feb 2023 23:20:03 GMT, Martin Buchholz <martin at openjdk.org> wrote:

>> "oldest trick in the book" is a phrase that does not necessarily imply existence of an actual book!
>> 
>> Let this evoke an image of a **personal** book of tricks that programmers in the 1960s might have recorded such techniques in.  And the tricks were passed down across generations of programmers!
>
> More to the point, ASCII was obviously **designed** to allow you to uppercase a lower case letter with a single instruction, so "the book" might have been a draft standard before they scrubbed out the interesting history!

Thanks Martin, I will from now on envision a stack of dusty punch cards with carefully scribbled notes on the back, barely held together with a dry and cracked rubber band.

More to the point: Do you have an opinion on the appropriate level of documentation / comments for this kind of 'tricky' code? My goal is that future maintainers should not get scared by the code and help them understand why it became what it is.

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PR: https://git.openjdk.org/jdk/pull/12632