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The following list contains interesting hints, that are not
really restrictions, but have to be handled carefully.
- Using {} and ''''.
Tcl
commands bound to events or resources can be
surrounded with {} or ''''. The use of {} is
much safer, than the use of ''''. The code
surrounded by '''' is parsed and substitutions are
performed, when the binding is added or the resource is set.
This may lead to unwanted results. It is better to use
global variables to pass parameters into commands bound to
events or resources.
- Setting auto_path.
If the loaded source sets the auto_path variable, it should
check if it is started inside of XF
. Manipulating the
auto_path variable can make XF
inoperable.
Harry Beker
Thu Feb 29 18:06:38 MET 1996