Over the years I've dabbled in perl and every once in a while I get bit by this problem. Basically strings I try and print come out mangled. As an example

#!/usr/bin/perl
use strict;
use Device::SerialPort;
use FileHandle;
my    $fh = FileHandle->new;
my $port = Device::SerialPort->new("/dev/ttyACM1");
$port->databits(8);
$port->baudrate(57600); # <-- match to arduino settings
$port->parity("none");
$port->stopbits(1);
$port->dtr_active(0);
my $i=1000;
my $rt = 0;
my $rh = 0;
my $it = 0;
my $foos="";
select(STDOUT);
while($i> 0) {
    my $inp = $port->lookfor;    
    if($inp ne "") {
        if($inp =~ /Remote Temp:/) {
            $rt = $inp;
            $rt =~ s/Remote Temp://;
            print "inp=$inp\n";
            print "rt=$rt\n";
            $foos="$rt does not print rt \n";
            print  $foos;
         print "rt=$rt\n\n";

        }
    }


}
$port->close;
undef $port;

[download]
The output from running this is 
inp=Remote Temp:22.30
rt=22.30
 does not print rt 
rt=22.30

[download]

Whats happening? BTW the input is a string like "Remote Temp:22.30"

In reply to Strings mangled on printing by gordu

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