[impldef] Fixed index entry collation to support keys containing code #772
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OK, I reworked this. The new solution involves stripping out certain well-known commands from the index text and using the bare text for collation, while retaining the original text for the index entry. The stripped commands are
\tcode
,\_
,\mname
and\grammarterm
.For advanced entries that add further index structure, this duplication mechanism fails, so we provide a new macro
\impldefplain
that has the original functionality. It's only used for one set of entries (value of bit-fields).Only two pages of diffs.