Go version reports the Go version used to build each of the named files.

If no files are named on the command line, go version prints its own
version information.

If a directory is named, go version walks that directory, recursively,
looking for recognized Go binaries and reporting their versions.
By default, go version does not report unrecognized files found

cpanato <******@****.***> 1717690383 +0200

zirain <******@****.***> 1713809620 +0800

package types

import (
	"fmt"
	"internal/goversion"
	"internal/lazyregexp"
	"log"
	"strconv"

	"cmd/compile/internal/base"
)

// A lang is a language version broken into major and minor numbers.
type lang struct {
	major, minor int
}

// langWant is the desired language version set by the -lang flag.
// If the -lang flag is not set, this is the zero value, meaning that

apiVersion: release-notes/v2

# This YAML file describes the format for specifying a release notes entry for Istio.
# This should be filled in for all user facing changes.

# kind describes the type of change that this represents.
# Valid Values are:
# - bug-fix -- Used to specify that this change represents a bug fix.
# - security-fix -- Used to specify that this change represents a vulnerability fix.

// If v does not start with "go", stripGo returns the empty string (a known invalid version).
func stripGo(v string) string {
	v, _, _ = strings.Cut(v, "-") // strip -bigcorp suffix.
	if len(v) < 2 || v[:2] != "go" {
		return ""
	}
	return v[2:]
}

// Lang returns the Go language version for version x.
// If x is not a valid version, Lang returns the empty string.
// For example:
//

	buildArch        = "unknown"
)

// BuildInfo describes version information about the binary build.
type BuildInfo struct {
	Version       string `json:"version"`
	GitRevision   string `json:"revision"`
	GolangVersion string `json:"golang_version"`
	BuildStatus   string `json:"status"`
	GitTag        string `json:"tag"`
}

// ServerInfo contains the version for a single control plane component
type ServerInfo struct {

cpanato <******@****.***> 1717690383 +0200

func (v *Version) PreRelease() string {
	return v.preRelease
}

// Components returns the version number components
func (v *Version) Components() []uint {
	return v.components
}

// WithMajor returns copy of the version object with requested major number
func (v *Version) WithMajor(major uint) *Version {
	result := *v

go version
stdout '^go version'

# Flags without files, or paths to missing files, should error.
! go version missing.exe
! go version -m
stderr 'with arguments'
! go version -v
stderr 'with arguments'

# Check that 'go version' succeed even when it does not contain Go build info.
# It should print an error if the file has a known Go binary extension.
#
go version empty.txt
! stdout .