I learn something about tell(), then abuse it.
I learned a new thing today, or remembered a forgotten one. I can use tell to affect the file handle that $.
uses.
It all started very simply. I was going too far in my answer to How do I add the elements of a file to a second one as columns using Perl?, a question I found by looking for the most down voted open questions without an accepted answer. As usual, I thought the answer would be easy. And, for the most part it was.
Then …