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* generic/tclIO.c (CloseChannel): Rewrote CloseChannel code to
unstack a channel during the close process. Fixed a refcount bug
in Tcl_UnstackChannel. [Bug: 5623]
+ (CloseChannel): further extended CloseChannel in the stacked case
+ to effect certain operations on the next channel that would have
+ been done in Tcl_Close. Also added CHANNEL_CLOSED and removed
+ (TCL_READABLE|TCL_WRITABLE) bits from chanPtr->flags. Changed
+ final reset of the WatchProc to check the chanDownPtr's (next)
+ interestMask.
2000-05-29 Sandeep Tamhankar <sandeep@scriptics.com>