I am referring to tags in TK::Text, ROText and the like:

my $list = $mw->Scrolled( 'ROText', -height=>5, -width=>20, ) ->pack(-fill=>'both',-expand=>1);

Somewhere, i have this code to replace a line of text in the list. 
my $ip = $list->index("T$j.first") || '1.0';     #preserve insertion p
+oint
#if insertion point is not found, then use 1.0 as insertion point.
$list->delete("T$j.start", "T$j.last");
$list->insert($ip, "next text here");

[download]
Unfortunately this $list->index("T$j.first") || '1.0' fails if tag $j does not exists. How do I check for the existence of a tag ($j) in said list?
So far, the only method I know is iterate through tagNames
foreach my $i ($list->tagNames()) {
    if ($i eq $j) {
        print "$tag found\n";
        last;
    }
}

[download]

But is there a better method?

In reply to checking existence of a tag in a TK::Text? by jsteng

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