public void start()

in grails-cli/src/main/java/org/grails/forge/cli/InteractiveShell.java [61:99]
36 lines of code
6 McCabe index (conditional complexity)

    public void start() {
        AnsiConsole.systemInstall();
        try {
            PicocliJLineCompleter picocliCommands = new PicocliJLineCompleter(commandLine.getCommandSpec());
            Terminal terminal = TerminalBuilder.terminal();
            LineReader reader = LineReaderBuilder.builder()
                    .terminal(terminal)
                    .completer(picocliCommands)
                    .parser(new DefaultParser())
                    .variable(LineReader.LIST_MAX, 50)   // max tab completion candidates
                    .build();

            String ansiPrompt = AUTO.string(prompt);
            String rightPrompt = null;

            // start the shell and process input until the user quits with Ctl-D
            String line;
            while (true) {
                try {
                    line = reader.readLine(ansiPrompt, rightPrompt, (MaskingCallback) null, null);
                    if (line.matches("^\\s*#.*")) {
                        continue;
                    }
                    if (line.equals("exit")) {
                        return;
                    }
                    ParsedLine pl = reader.getParser().parse(line, 0);
                    String[] arguments = pl.words().toArray(new String[0]);
                    executor.accept(arguments);
                } catch (UserInterruptException | EndOfFileException e) {
                    return;
                }
            }
        } catch (Throwable t) {
            onError.apply(t, commandLine);
        } finally {
            AnsiConsole.systemUninstall();
        }
    }