The artist formerly known as [{expand}]. See [TIP] 293 [http://tip.tcl.tk/293] for details.

[RLH] This is much better IMHO.

''[jcw] - '''HURRAY!'''''

[RS] Note that in [re_syntax], * stands for "zero or more", which is exactly the unique cardinality of an {expand}ed item...

[DKF]: Similarly in [string match] syntax.
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[SYStems] I vote yes. I don't think though that its necessary to deprecate {expand}, but I agree on deprecating {} it does look like syntax error rather than a feature.

[RLH] I think {expand} should be removed completely. It is not in the language "official" yet and so it should be yanked to make sure no abuse occurs.

[JMN]  Well.. {*} looks to me like a nipple.. which is clearly better than a wart.
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CN slightly regrets that [{expand}] is now gone - I was looking forward for possible future enhancements along the same line, like for example 

   lappend mylist {sort|toupper|regmatch [0-9]+}$somelist

to specify a chain of filters for the expansion. But I suppose that people for whom [{expand}] is a wart will classify this a as a tumor... ;-)
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or you can just 

   lappend mylist {*}[lsort [string toupper [regmatch {[0-9]+} $somelist]]]

moral is {*} is not a shorthand for other commands, its a new feature, altought for this particular example you could have just used 

 set mylist [concat $mylist [lsort [string toupper [regmatch {[0-9]+} $somelist]]] ]
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[[[Category Syntax]|[Dodekalogue]]]