}
}

func (e *CommandError) Error() string {
	if len(e.Args) == 0 {
		return fmt.Sprintf("%s:%d: %s: %v", e.File, e.Line, e.Op, e.Err)
	}
	return fmt.Sprintf("%s:%d: %s %s: %v", e.File, e.Line, e.Op, quoteArgs(e.Args), e.Err)
}

func (e *CommandError) Unwrap() error { return e.Err }

// A UsageError reports the valid arguments for a command.
//
// It may be returned in response to invalid arguments.

				b.WriteString(s.ExpandEnv(frag.s, isRegexp))
			}
		}
		args = append(args, b.String())
	}
	return args
}

// quoteArgs returns a string that parse would parse as args when passed to a command.
//
// TODO(bcmills): This function should have a fuzz test.
func quoteArgs(args []string) string {
	var b strings.Builder
	for i, arg := range args {
		if i > 0 {
			b.WriteString(" ")
		}

				stdout, stderr, err := bg.wait(s)

				beforeArgs := ""
				if len(bg.args) > 0 {
					beforeArgs = " "
				}
				s.Logf("[background] %s%s%s\n", bg.name, beforeArgs, quoteArgs(bg.args))

				if stdout != "" {
					s.Logf("[stdout]\n%s", stdout)
					stdouts = append(stdouts, stdout)
				}
				if stderr != "" {
					s.Logf("[stderr]\n%s", stderr)

    }

    public String compilerDefine(String define, String value) {
        return compilerConfig("define", define, value);
    }

    private String compilerConfig(String action, String... args) {
        String quotedArgs = CollectionUtils.join(",", CollectionUtils.collect(args, new SingleQuotingTransformer()));
        StringBuilder builder = new StringBuilder();
        for (String plugin : getPluginList()) {

            // Pass build JVM args through to daemon via system property on the launcher JVM
            String quotedArgs = join(" ", collect(gradleInvocation.buildJvmArgs, input -> String.format("'%s'", input)));
            gradleInvocation.implicitLauncherJvmArgs.add("-Dorg.gradle.jvmargs=" + quotedArgs);
        } else {
            // Have to pass build JVM args directly to launcher JVM