Why is it called case "folding"?
Roger L Costello
costello at mitre.org
Thu Mar 17 13:18:00 CDT 2022
I read  that this is what case folding is:
Case folding is the process of making two texts which differ only in case identical for comparison purposes, that is, it is meant for the purpose of string matching.
I understand the use of the word "case," as in uppercase and lowercase.
I don't understand the use of the word "folding." Folding? Huh? I fold my towel. I fold my shirt. I don't fold my case (whatever that means).
Why is it called case "folding"? Who came up with that term?
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