##### SUMMARY
Customer request: When typing the string to encrypt, it shows up as plain text. Since the string is being encrypted, it's safe to assume that it's sensitive (e.g. passwords) and should therefore be hidden. At the very least, maybe this could be a command line option. If it is hidden, I'd prefer to be forced to enter it twice to avoid mismatch. To mitigate this issue, I am currently using "stty -echo", but that shouldn't be necessary.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
ansible-vault
show_delimiter = False
        if len(b_plaintext_list) > 1:
            show_delimiter = True
        
        output = []
        
        
        
        for index, b_plaintext_info in enumerate(b_plaintext_list):
            
            b_plaintext, src, name = b_plaintext_info
            b_ciphertext = self.editor.encrypt_bytes(b_plaintext, self.encrypt_secret,
                                                     vault_id=vault_id)
            
            yaml_text = self.format_ciphertext_yaml(b_ciphertext, name=name)
            err_msg = None
            if show_delimiter:
                human_index = index + 1
                if name:
                    err_msg = '# The encrypted version of variable ("%s", the string #%d from %s).\n' % (name, human_index, src)
                else:
                    err_msg = '# The encrypted version of the string #%d from %s.)\n' % (human_index, src)
            output.append({'out': yaml_text, 'err': err_msg})
        return output
    def execute_decrypt(self):