Update: OP updated as this was written. Original (or maybe second version of 3?) was actually better. In any case, my refs to lines 2 and 5 should now be read as 5 and 16&27 (I think).</update>

Your input, $index=<STDIN>; at line 2 is going to have a trailing newline (think of the return you hit to terminate the input, if that notion is helpful).

So, to have line 5 print without an inadvertent newline, make line 3:
chomp $index;
... and your problem should be solved.

Now, we know this is just a snippet, but FTR, one hopes that you're using strict and warnings which will actually help you avoid or understand many other apparently odd behaviors.

And, welcome to the Monastery!

In reply to Re: 'Invisible' newlines/line wrapping by ww
in thread 'Invisible' newlines/line wrapping by luolimao

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