go help exit code 2

[hellojukay]

What version of Go are you using (go version)?

go version go1.13.6 linux/amd64

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

go env Output

GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/hellojukay/.cache/go-build"
GOENV="/home/hellojukay/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
components,git-biz.qianxin-inc.cn/ats-ng/nspm-2.0"
GOOS="linux"
GOPATH="/home/hellojukay/go"
GOPROXY="https://goproxy.io"
GOROOT="/home/hellojukay/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/hellojukay/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="0"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build902988545=/tmp/go-build -gno-record-gcc-switches"

What did you do?

go -h | grep build

What did you expect to see?

it should get help usage about build

    build       compile packages and dependencies
    buildmode   build modes
    cache       build and test caching

What did you see instead?

build golang print usage to stderr,

go -h 
echo $?
2

it thank go -h should exit 0

[davecheney]

The go command returned -2 because -h is not recognised.

[hellojukay]

yes , go help exit with 0