Shortcuts question (Re)

[Marcel Schneider via CLDR-Users]

Hello,

There is a short thread about localizing keyboard shortcuts, on Unicode Public:

https://unicode.org/mail-arch/unicode-ml/y2018-m09/0018.html

https://unicode.org/mail-arch/unicode-ml/y2018-m09/0019.html

https://unicode.org/mail-arch/unicode-ml/y2018-m09/0021.html

On Fri, 7 Sep 2018 05:52:46 +0530 Shriramana Sharma via Unicode wrote:
[…]
> 1) Are shortcuts like Ctrl+C changed as per locale? I mean Ctrl+T for "tout" io Ctrl+A for "all"?

On Fri, 7 Sep 2018 05:27:08 +0200 I via Unicode wrote:
> No, Ctrl+A remains Ctrl+A on a French keyboard.

On Fri, 7 Sep 2018 15:03:46 +0200 Christoph Päper via Unicode wrote:
[…]
> Some are, many are not. For instance, some text editors use a modifier key with F and K
> instead of B and I for bold ("fett") and italic ("kursiv").

Indeed in French edition of Excel Starter, bold is Ctrl+G (for “gras”), while Word Starter (as part of 
the same Office Starter) has it Ctrl+B.

For follow-up, here is OP’s full request:
On Fri, 7 Sep 2018 05:52:46 +0530 Shriramana Sharma via Unicode wrote:

Hello. This may be slightly OT for this list but I'm asking it here as it concerns computer usage with multiple scripts and i18n:

1) Are shortcuts like Ctrl+C changed as per locale? I mean Ctrl+T for "tout" io Ctrl+A for "all"?

2) How about when the shortcuts are the Alt+ combinations referring to underlined letters in actual user visible strings?

3) In a QWERTZ layout for Undo should one still press the (dislocated wrt the other XCV shortcuts) Z key or the Y key which is in the physical position of the QWERTY Z key (and close to the other XCV shortcuts)?

4) How are shortcuts handled in the case of non Latin keyboards like Cyrillic or Japanese?

4a) I mean how are they displayed on screen? 

4b) Like #1 above, are they changed per language?

4c) Like #2 above, how about for user visible shortcuts?

(In India since English is an associate official language, most computer users are at least conversant with basic English so we use the English/QWERTY shortcuts even if the keyboard physically shows an Indic script.)

Thanks!