>As everybody knows, Ostmitteldeutsch is spoken in Thuringia and
>Silesia
>http://tinyurl.com/35l96fj
>and not in 'the Alpine regions of Austria and Bavaria', where they
>speak Oberdeutsch (characterized ia. by *-w -> -b-).
Of course. But I all the time underlined the "order" of importance
of those dialects. I've never asserted that only Bavarian would be
accountable for any influence. Like it or not, Yiddish is closer to
Bavarian than to Silezian and Thuringian, bec. of many peculiarities.
On the other hand, Thuringian and Silezian are very close to
Babarian and Suebian, way closer than Low German (of Bremen,
Hamburg, Kiel, Schleswig-Holstein, Rostock) is to Bavarian and
Yiddish. (But this is a common place.)
On top of that, those people (like Kutschera, Mieses etc.) pointed
out (as the theory goes) that Yiddish evolved to a great extent not
only in the southern parts of the Holy Empire, but also in Poland
where Jews learnt German both from Christian and Jewis Germans.
(Even to think only a second that Przeworks times Germanic idioms
may have continuated in Poland *directly* thus generating Yiddish,
is absurd or it sounds as if you were making fun.)
George