This extension provides two new commands, transform
and unstack.
::
Subcmd
Description
transform
channel -command command
This command creates a new generic transformation channel
and stacks it above the specified base <channel>. The
given <command> is executed whenever something of
importance happens on the channel, it has to implement
the desired behaviour of the transformation.
For now see doc/manual for a complete description.
unstack
channel
This command provides a tcl-level interface to
Tcl_UnstackChannel. If no transformation was stacked
upon <channel> this is equivalent to
close channel. Else it removes the topmost
transformation from the stack.
