lsort indexing in tcl 8.4 return me bad index
<p>for example i have</p>

<pre><code>lsort -index {1 3} {{a {0 1 2 9 4}} {b {9 8 7 6 5}} {c {0 0 0 0 0}}}
</code></pre>

<p>i've tried the -index {1 3} in tcl 8.4 that return bad index.
system where I'm running that code is still using TCL 8.4</p>

<p>how do i get the lsort with something like {1 3} to work in tcl 8.4</p>