! go mod init gopkg.in/pkg
stderr '(?s)^go: invalid module path "gopkg.in/pkg": module paths beginning with gopkg.in/ must always have a major version suffix in the form of .vN(.*)go mod init gopkg.in/pkg.v1$'

! go mod init gopkg.in/user/pkg
stderr '(?s)^go: invalid module path "gopkg.in/user/pkg": module paths beginning with gopkg.in/ must always have a major version suffix in the form of .vN(.*)go mod init gopkg.in/user/pkg.v1$'

! go list -m rsc.io/quote@latest
stderr '^go: module rsc.io/quote: invalid response from proxy "'$GOPROXY'": invalid character ''i'' looking for beginning of value$'

! go list -m rsc.io/quote@1.5.2

// Examples is designed to help with producing examples for command line usage.
// Its behavior is mimicking a similar kubectl function in the following ways:
// - Beginning and trailing space characters (including empty lines), are stripped from the output.
// - All lines of text are stripped of beginning and trailing spaces (thus loosing indentation) and are then double-space indented.
func Examples(s string) string {
	trimmedText := strings.TrimSpace(s)

class CancellationCrossVersionSpec extends ToolingApiSpecification {
    def setup() {
        settingsFile << '''
rootProject.name = 'cancelling'
'''
    }

    def "early cancel stops the build before beginning"() {
        buildFile << """
throw new GradleException("should not run")
"""
        def cancel = GradleConnector.newCancellationTokenSource()
        def resultHandler = new TestResultHandler()

        when:

// a comment at the beginning of the file

package empty

		return scanBeginLiteral
	case '0': // beginning of 0.123
		s.step = state0
		return scanBeginLiteral
	case 't': // beginning of true
		s.step = stateT
		return scanBeginLiteral
	case 'f': // beginning of false
		s.step = stateF
		return scanBeginLiteral
	case 'n': // beginning of null
		s.step = stateN
		return scanBeginLiteral
	}
	if '1' <= c && c <= '9' { // beginning of 1234.5
		s.step = state1

// a comment at the beginning of the file

package empty

# Test that go list prefix... does not read directories not beginning with prefix.
env GODEBUG=gofsystrace=1
go list m...
stderr mime
stderr mime[\\/]multipart

	block, err := aes.NewCipher(key)
	if err != nil {
		panic(err)
	}

	// The IV needs to be unique, but not secure. Therefore it's common to
	// include it at the beginning of the ciphertext.
	if len(ciphertext) < aes.BlockSize {
		panic("ciphertext too short")
	}
	iv := ciphertext[:aes.BlockSize]
	ciphertext = ciphertext[aes.BlockSize:]

	// CBC mode always works in whole blocks.

		err = fmt.Errorf("invalid archive header")
		return
	}
	name = strings.TrimSpace(string(hdr[:16]))
	return
}

// FindExportData positions the reader r at the beginning of the
// export data section of an underlying GC-created object/archive
// file by reading from it. The reader must be positioned at the
// start of the file before calling this function. The hdr result