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It should also be noted that Icelandic has underwent spelling reforms to make the spelling more etymological.

It used to be spelled such that it better reflected the modern pronunciation, they at various points actually went back to spell based on older pronunciation, simply to make the language seem more archaic.

“ég” in Icelandic is pronounced “jeg”, and that is how it was spelled in the 1920's; they went back to “ég” simply to make it appear closer to Old Norse.