xlink microsoft/terminal#217

At least, it it possible to make the second Ctrl+C act as Y when CMD is already asking Terminate batch job (Y/N)?

The question is not for me, but it also concerns me. This is a COOKED_READ territory, not cmd.exe.

The Terminate batch job (Y/N)? call is represented in the system as <noalias> (this is its exe name), so the input for it can be altered using doskey macro. To be sure, try the following example (run test1.cmd, press Ctrl+C, and press n):

test1.cmd:

@echo off
doskey /exename=^<noalias^> n=y
echo About to do it.
pause
echo test

The next test works in WT on Windows10 but does not work directly in conhost:

test2.cmd:

@echo off
doskey /exename=^<noalias^> �=y
echo About to do it.
pause
echo test

The doskey /exename=^<noalias^> �=y command contains ASCII character with code 0x03 (ETX, Ctrl+C). It can be inserted to the test2.cmd using for example Notepad++ by typing text 03, select it, and apply plugin Plugins->Converter->HEXtoASCII.

Perhaps you can think through this idea and come up with a full-fledged workaround.

Anyway, it is possible to handle Ctrl+C keypress per exe-name (e.g. =<noalias>) as a special (may be configurable) case, and do not touching cmd.exe itself.

UPDATE: Now you could try how it works in vtm without any doskey shims (tested and works fine on Win8/Win10/Win11/Server2019Core/Server2019/Server2022 (including localized))

UPDATE2: It has a small side effect on copy/move/del commands (perhaps we must filter it by looking at the last key pressed != Ctrl+C)

C:\Users\sdn>copy con iii 
^Z 
        1 file(s) copied.

C:\Users\sdn>copy iii ooo 
        1 file(s) copied.

C:\Users\sdn>copy iii ooo
Overwrite ooo? (Yes/No/All): (Ctrl+C = Y) n 
        0 file(s) copied.

C:\Users\sdn>move iii ooo 
Overwrite C:\Users\sdn\ooo? (Yes/No/All): (Ctrl+C = Y) n 
        0 file(s) moved.

C:\Users\sdn>mkdir ppp 

C:\Users\sdn>del ppp 
C:\Users\sdn\ppp\*, Are you sure (Y/N)? (Ctrl+C = Y) n 

C:\Users\sdn> 

UPDATE3: Interference with copy/move/del has been eliminated:

D:\sources\test\cmd>copy iii ooo 
Overwrite ooo? (Yes/No/All): ^C 

        0 file(s) copied.

D:\sources\test\cmd>move iii ooo 
Overwrite D:\sources\test\cmd\ooo? (Yes/No/All): ^C 

        0 file(s) moved.

D:\sources\test\cmd>del ppp 
D:\sources\test\cmd\ppp\*, Are you sure (Y/N)? ^C 

D:\sources\test\cmd>test 
About to do it.
Press any key to continue . . . 
Terminate batch job (Y/N)? (Ctrl+C = Y) y 
^C
D:\sources\test\cmd>