Line 192 is "$ACETmpltDir = ~s/$ACEEnvironment//g;".

That should be $ACETmpltDir =~ s/$ACEEnvironment//g;. Pay careful attention to the spacing around =~.

What you have at the moment is trying to apply the substitution to $_; then apply logical not (*) bitwise negation (~) to the numeric result of that:

$_='aaaaa'; print s[a][]g;;
5

$_='aaaaa'; print ~s[a][]g;;
18446744073709551610

[download]

and finally assign (=) that to $ACETmpltDir, but it falls at the first hurdle because $_ is undefined.

(*)Corrected. Thanks to AnomalousMonk

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Use of uninitialized value in substitution (s///) by BrowserUk
in thread Use of uninitialized value in substitution (s///) by AvanTTix

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