unicode: IsPrint and IsGraphic return true on variation selectors characters #73673
Description
Go version
go version go1.24.2 darwin/arm64
Output of go env in your module/workspace:
AR='ar'
CC='clang'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='clang++'
GCCGO='gccgo'
GO111MODULE='on'
GOARCH='arm64'
GOARM64='v8.0'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/Users/xxxx/Library/Caches/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/Users/xxxx/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/wv/xxxx/T/go-buildxxxx=/tmp/go-build -gno-record-gcc-switches -fno-common'
GOHOSTARCH='arm64'
GOHOSTOS='darwin'
GOINSECURE=''
GOMOD='/Users/xxxx/GolandProjects/invisible_test/go.mod'
GOMODCACHE='/Users/xxxx/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='darwin'
GOPATH='/Users/xxxx/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/Users/xxxx/sdk/go1.24.2'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/Users/xxxx/Library/Application Support/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/Users/xxxx/sdk/go1.24.2/pkg/tool/darwin_arm64'
GOVCS=''
GOVERSION='go1.24.2'
GOWORK=''
PKG_CONFIG='pkg-config'What did you do?
You can try put invisible variation selectors (I tried 1-3, 254-256) in IsPrint and IsGraphic.
https://go.dev/play/p/rNEdvg_Qmzp
What did you see happen?
IsPrint and IsGraphic return true.
What did you expect to see?
IsPrint and IsGraphic should return false as variation selectors are not visible.