gdb: GDB/MI Compatibility with CLI

 
 27.3 GDB/MI Compatibility with CLI
 ==================================
 
 For the developers convenience CLI commands can be entered directly, but
 there may be some unexpected behaviour.  For example, commands that
 query the user will behave as if the user replied yes, breakpoint
 command lists are not executed and some CLI commands, such as 'if',
 'when' and 'define', prompt for further input with '>', which is not
 valid MI output.
 
    This feature may be removed at some stage in the future and it is
 recommended that front ends use the '-interpreter-exec' command (See
 -interpreter-exec).