tcl/tk question

[richard.pieri-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org (Richard Pieri)]

On May 8, 2011, at 7:13 AM, Jerry Feldman wrote:
> 
> The issue commonly occus when a Windows user does not first bring up
> Exceed. Putty would have -X set, so the DISPLAY environment variable
> gets set.

The gotcha is that it uncommonly occurs when there is a communications problem between X client and server.  It is not possible for an X client to reliably distinguish between user error and genuine faults.  Assuming that all X server failures are user error is bad design.

--Rich P.