[Bug-kawa] [bug #49522] runtime exception from kawa -w

[Per Bothner]

Update of bug #49522 (project kawa):

                  Status:                    None => Postponed              
             Assigned to:                    None => bothner                

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Follow-up Comment #1:

That one is difficult to fix - and probably low priority.

Note this is the old Swing-based console, not the new Javafx/DomTerm-based
console.  The former does not do terminal emulation, and the input editing is
whatever Swing gives you.

To get the new JavaFX/DomTerm-based console you need to have JavaFX.  The
easiest way to get it is to use Java SE (JDK).

I'm considering how to have -w create a DomTerm window without JavaFX.  It's a
bit tricky.  The idea is to embed a WebSocket server in Kawaa, and then have
-w pop up a browser window (optionally in "app" mode).  Most of the pieces are
available, but hooking them together (in a way that we can use JLine input
editing) needs a little bit of head-scratching and coding.

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