The functional creep of "all"

Despite yesterday's post about their failure to consider the idea that all is a determinative, Buchstaller and Traugott (B&T) present a good deal of interesting data on the functional creep of the universal determinative all. These are nicely summarized in their Table 2 (p. 365).

Were they al demonyak?†

In "The lady was al demonyak: historical aspects of Adverb all", Buchstaller and Traugott (B&T) consider the "development of the functions and structural properties of Adverb all, and suggest that degree modifiers in general should be analyzed in similar terms" (p. 345). They claim that the authors of CGEL mention "Adverb all as a ‘modifier in an AdvP’ that means ‘completely’, but do not subclassify it in their discussion of types of adverbs" (p. 345). The reason that all is not subclassified as a type of adverb is that it's not an adverb at all. It's a determinative.