If "the value of $\ is later changed" was a genuine concern, a better way would be to explicitly code the following rather than expecting a subsequent maintainer to automatically realise why printf was used here: 

...
{
    local $\;
    print "\x{FEFF}";
}
...

[download]

And, of course, a much better way to change $\ in the middle of the program, would be along these lines: 

... code as it is now ...
# later changes:
...
{
    local $\ = "\n";
    ... code using changed $\ ...
}
...

[download]

-- Ken

In reply to Re^5: Global substitution of non-base-plane Unicode characters by kcott
in thread Global substitution of non-base-plane Unicode characters by pjfarley3

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