Member predicate ScanfFormatLiteral::parseConvSpec
Holds if the arguments are a parsing of a conversion specifier to this
format string, where n is which conversion specifier to parse, spec is
the whole conversion specifier, width is the maximum width option of
this input, len is the length flag of this input, and conv is the
conversion character of this input.
Each parameter is the empty string if no value is given by the conversion specifier.