Is this possible?
No.

From the docs

...it enforces an important divide - design and programming.
The idea behind HTML::Template is that what you are trying to do is to put 'programming' in your template.

Why can't you put that regex in your param, something like 

my $flag;
if (my_var =~ /some string/){
  $flag++;
}

my $param = {
  flag => $flag,
};

[download]
<TMPL_IF flag>

[download]
imo, this restriction is a good thing. It forces you to separate your logic from your presentation, and, I think, both your code and your templates are better for it. Another benifit is that H::T is a fast, easy to use, lightweight solution for most needs.

Perhaps consider something like Template::Toolkit if H::T is too restrictive for your needs.

updated: fixed link

In reply to Re: HTML::Template regular expression usage by wfsp
in thread HTML::Template regular expression usage by sh1tn

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