I'd do something like (untested) 

my $myvar;
{
  local $/ = undef;
  if ( ( $myvar = <FILEPTR> )  =~ s/\n+//g ) {
    alert_user();
  } 
}

[download]
If you don't care to alert the user when newlines are found, then replace the if block with 
( $myvar = <FILEPTR> )  =~ s/\n+//g;

[download]
The line 
local $/ = undef;

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essentially turns off line-oriented input, and reading from the handle gets the whole string.

If you want to preserve the last newline (and just get rid of the embedded ones), use this regular expression instead: 

s/\n+(?!\z)//g

[download]

the lowliest monk

In reply to Re: How to test for a new line by tlm
in thread How to test for a new line by BadMojo

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