Interesting anomaly in specialized index handling

[Richard Hamilton <hamilton@xmlpress.net>]

I have been using the specialized index facility to create two indexes, one with type="author" and the other with type="subject".

I have one entry under type="subject" that is a symbol, so there is a "Symbols" entry in that index. Even though there isn't any entry that would go under Symbol with type="author", I get an empty Symbol heading in the author index.

If I remove the symbol term with type="subject", the heading disappears from the author index.

I thought this might extend to other headings, but that's not the case. For example, there are indexterms starting with the letter "i" in the subject index, but none in the author index, and there is no heading for "i" in the author index. So the problem appears to occur only for symbols.

Dick
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