This command is part of the [TclX] package.

    :   '''lvarcat''' ''var string'' ?''string ...''?

Treats each of the ''string''s as a list and concatenates them onto the list in ''var'' (which is created if it didn't already exist).

Compare with [concat].

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% package require Tclx
8.4
% lvarcat i "{" "abc" "123"
{ abc 123
% llength $i
unmatched open brace in list
======

It looks, to me, as if it treats each of the strings as a string, concatenating them together, and that if you want the result to be a list, you need to construct the arguments appropriately. Note also that each string is separated by a space.

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%| [Category Command%|%Command%|%] | [Category TclX%|%TclX%|%] |%
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