James,
If you ask the whole list your questions, you probably won't have to wait until I wake up to get an answer. ;)
Why is the "tr/\t/ /;" substitution better than just using s///g;? Thanks
Transliterate doesn't have to launch the whole Regular Expression engine just to replace characters, so it's considerably more efficient. Save m// and s/// for when you need the power of a pattern. For simple character swapping, tr/// is the way to go.
James
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