Passing list to Tcl procedure

Question

What is the canonical way to pass a list to a Tcl procedure?

I\'d really like it if I could get it so that a list is automatically expanded into a variable number of arg

Answer 1

It depends on the version of Tcl you're using, but: For 8.5:

set mylist {a b c}
myprocedure option1 option2 {*}$mylist

For 8.4 and below:

set mylist {a b c}
eval myprocedure option1 option2 $mylist
# or, if option1 and 2 are variables
eval myprocedure [list $option1] [list $option2] $mylist
# or, as Bryan prefers
eval myprocedure \$option1 \$option2 $mylist