matthiasblaesing commented on PR #7430:
URL: https://github.com/apache/netbeans/pull/7430#issuecomment-2145711190

   > Isn't this because the pcs and vcs in `TerminalInputOutput` are firing 
with the wrong source? No objection to fixing like this, but could be done 
without additional API.
   
   The source of the events is indeed the `TerminalInputOutput`, but the 
registration is not done on it. That is a capability implemented by the  
`IONotifier` implementation. This is hidden by the 
`IONotifier#addPropertyChangeListener` implementation. The problem is now, that 
to create a `WeakListener` you need access to the object you need to detach (in 
this case the `IONotifier` implementation) from when the listener is collected. 
   
   I though about directly implementing the registration logic (essentially 
copying the `IONotifier#find` method), but discarded that so that the logic is 
all unified in `IONotifier`.


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