Aside from the answer about the correct Unicode code point by kcott, it seems some calendar systems are more forgiving than others when it comes to encoding.

If Unicode still makes problems, check (with a hex editor) if the file you generate has a byte order mark. I haven't played with ICS calender stuff in many, MANY years, so i'm just guessing. But at least a quick google suggest that a BOM might be required.

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In reply to Re: Another Unicode/emoji question by cavac
in thread Another Unicode/emoji question by Bod

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