execute_ioslike() hangs on confirmation prompt on Brocade VDX platform

[jathanism]

When executing "copy running-config startup-config" on a Brocade VDX switch, it prompts with:

This operation will modify your startup configuration. Do you want to continue? [y/n]:

2012-04-04 11:18:02-0700 [TriggerTelnet,client] Sending command: 'copy running-config startup-config'
2012-04-04 11:18:02-0700 [TriggerTelnet,client] dataReceived, got bytes: 'copy running-config startup-config\n'
2012-04-04 11:18:02-0700 [TriggerTelnet,client] dataReceived, got data: 'copy running-config startup-config\n'
2012-04-04 11:18:02-0700 [TriggerTelnet,client] dataReceived, got bytes: 'This operation will modify your startup configuration. Do you want to continue? [y/n]:'
2012-04-04 11:18:02-0700 [TriggerTelnet,client] dataReceived, got data: 'copy running-config startup-config\nThis operation will modify your startup configuration. Do you want to continue? [y/n]:'

And it just hangs there (IoslikeSendExpect.dataReceived keeps returning None)

Need a way to catch confirmation prompts and do something with them.