[NTG-context] Why does the oldstyle numerals switch, \os, also switch off m-dashes?

[Pavneet Arora]

I enclose a minimal example as well as the output. It would seem that the \os causes the m-dash to come out as three hyphens. Is this the expected behaviour?

advTHANKSance.

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- Pavneet Arora

test.pdf
Description: Adobe PDF document

\starttext
1234567890 A Pause---between yes and no.

\os
1234567890 A Pause---between yes and no.
\stoptext

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