latin(basic) currently has left upper quotation marks on AB04 (letter V) and right upper quotation marks on AB05 (letter B); double quotes on layer 3, single quotes on layer 4. Lower quotation marks, standard at the beginning of a quote in some European languages, are not included.
Some layouts move the upper quotes one key to the right, placing them on AB05 and AB06, and add single quotes on AB04. Examples are de(basic) and de(deadtilde). ipa does the same on layers 5/6.
In latin(basic), layer 3/4 of AB06 (letter N) is just a duplicate of layers 1/2 and thus should be free to reassign. I would therefore implement the same change in latin(basic).
I analyzed the layouts which inherit from latin to make sure this change does not break one of them – right upper quotes would become unreachable after the change where a keyboard layout inherits layer 3/4 of AB03/AB04 from latin(basic), but not layer 3/4 of AB06. Corrections were made to the following ones:
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it(basic)andnl(basic)have Ntilde on AB06;ml(basic)has U019D;pl(legacy),pl(szl)andpl(csb)have Nacute;za(basic)has U1E4A;macintosh_vndr/de(basic)has asciitilde. AB04 and AB05 were overridden to keep the previous behavior- for those layouts. -
pt(colemak)has definitions of AB04/AB05 which look redundant but would prevent changes tolatin(basic)from taking effect; these definitions were dropped. -
sun_vndr/lt(sun_type6)does not inherit fromlatin(standard)but has similar mappings; the same changes were applied here. - Definitions of AB04–AB06 in
de(basic)have become redundant and were dropped.
While I have tried to prevent undesired side effects, if anyone wants to conduct further tests, I would greatly appreciate this.