 | NOTE: There is only one Control-Y handler per session.
When Debug is entered, it takes ownership of the Control-Y handler.
When Debug is exited, it returns the Control-Y
handler to the process that owned it when Debug was entered. If other processes are active in a session while Debug is being used,
it is possible for one of the other process to steal Control-Y ownership
from Debug. In this situation, when Debug exits it will, in effect, steal
Control-Y back from the current owner and give it to the process that
owned it when Debug was entered. If Control-Y is stolen from Debug,
it is also possible to create infinite loops in Debug
from which there is no way out (for example, "while TRUE do {}"). Both DAT and Debug rearm the Control-Y trap after every CI command
(for example, the ":" command). |
