Is that *really* the problem, or is the problem that you are printing
out something that shouldn't have {}'s in it, but they somehow are
magically appearing?
Just curious -- many people have this problem when first starting out
with Tcl. If this is the case, you are likely trying to treat a list as
a string. Instead of removing the curly braces from the string
representation of the list, it is generally better to convert the list
or list element to a bona fide string.
For a discussion about list stripping: http://mini.net/tcl/3400
ulis