[Openmcl-devel] Hemlock clipboard bug

R. Matthew Emerson rme at clozure.com
Mon May 18 15:21:09 PDT 2009

On May 18, 2009, at 5:38 PM, Ron Garret wrote:

> Along those lines, I have found a reliable way to reproduce the
> clipboard corruption problem:
> 1.  Open a listener.
> 2.  Type "12345", select and copy it
> 3.  Paste.  This should work.
> 4.  Hit delete three times.  You should have deleted "345".  Fewer
> deletes don't seem to produce the problem.
> 5.  Paste.  This should still work, i.e. you should have pasted
> "12345" again.  Your command line should now read "123451212345"
> 6.  Repeat steps 4 and 5.  On my machine, the contents of the
> clipboard are now "5345" instead of "12345".
> I'd love to know if other people are able to reproduce this.

I see the same thing;  clearly a bug.  I'm taking a look at it now.

If Hemlock sees more than Character Deletion Threshold (default 5)  
characters get killed consecutively, it saves them on the kill ring.

The act of pasting a string from the Mac OS clipboard doesn't appear  
to do anything about resetting this notion, so after you press delete  
5 times, Hemlock saves the characters onto the kill ring, and hence,  
onto the clipboard.

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