[over.best.ics.general] The wording about implicit conversion sequence is inconsistent
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Description
[over.best.ics.general] p6 says
When the parameter has a class type and the argument expression has the same type, the implicit conversion sequence is an identity conversion.
However, we specify the well-formed implicit conversion sequences in [over.best.ics.general] p3 as the following:
There is no identity conversion in the list. [over.best.ics.general] p8 says
If no conversions are required to match an argument to a parameter type, the implicit conversion sequence is the standard conversion sequence consisting of the identity conversion ([over.ics.scs]).
I think we should consistently use the wording in a similar manner to [over.best.ics.general] p8. That is, we should explicitly say what the kind of the implicit conversion sequence is and then specify what the conversions the sequence comprises. Such as:
When the parameter has a class type and the argument expression has a derived class type, the implicit conversion sequence is a standard conversion sequence consisting of the derived-to-base conversion from the derived class to the base class.
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Research direction
Start by comparing [over.best.ics.general] p6 with p8 and the list of permitted implicit conversion sequences in p3. Update the inconsistent wording so each case identifies the sequence type and its conversions, then review the surrounding paragraphs to confirm the terminology is consistent.
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- tex
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