NeedsFixPerformancehelp wanted
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The golang.org/x/text/unicode/norm package allocs 21.47kB in its init function, regardless of whether the package is ever used.
We should do it lazily, as done in e.g. https://go-review.googlesource.com/c/net/+/127275 and https://go-review.googlesource.com/c/go/+/127075
This would help people who explicitly import it (or import it via golang.org/x/net/http2), as then the std-vendored copy would not need to also allocate the 20KB.
Perhaps some of those tables should be const strings, too, so the linker can put it in read-only sections. Then we can slice into it at runtime to get integers out.
/cc @mpvl