To use FILEHANDLE alone to print the content of $_ to it, you must use a bareword filehandle like FH, not an indirect one like $fh

I saw some websites saying that BAREWORDS to refer file handles are dangerous because they are global. But now here I see they "prohibiting" it when you like a syntax sugar. Just don't get it...

Is there any other context where automatic use of $_ can't be applyed?

I mean, if I want to print the current $_ to another file handle (not STD{OUT,ERR, etc.) I can't omit $_:

while(<>){
print $fh; #doesn't work
print $fh $_; #work
}

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In reply to Where automatic variable $_ doesn't work? by guiwp

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