[Avodah] Rosh Chodesh bentching controversies - Just in time for this Shabbos

[Zev Sero]

RYL will be happy to know that Lubavitch says neither Tfilas Rav nor the
expanded "Yechadsheihu".

Meanwhile, since we're on the subject, the Italian nusach for birkat
hachodesh includes this formula: "Kach gazru rabbotenu hamechubadim,
shenachriz bifnei hakahal hakadosh hazeh, sheyihyu yod'im gedolim
uktanim sheyesh lanu rosh chodesh Nissan becheshbon rabbotenu bayom
hashelishi."  Note the explicit reference to Chazal and the calculated
calendar; I wonder whether this was lehozi miliban of the Karaim.

-- 
Zev Sero                      The trouble with socialism is that you
zev at sero.name                 eventually run out of other people’s money
                                                      - Margaret Thatcher