This is a best practices question.
Should I encode tex files in ascii or should I use utf-8? Is either preferred for a reason (ANY reason) in the case where ascii characters and nothing else appear in the tex file code?
(Obviously utf-8 is preferred for foreign language characters directly typed, but this is not the case here analysed.)
Q1) Any benefit to using ascii input encoding in this case?
Q2) If I have a tex file encoded in ascii and I copy and paste text into utf-8 encoded document, any problem when I save the utf-8? I imagine not : utf-8 includes ascii, but I could be wrong. Am I?
Q3) If I copy text from a utf-8 encoded document into a ascii encoded document, any problem? Assume only ascii characters are being copied and pasted?