[Bug 52719] New: cmd.exe mishandles echo %time%

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52719

Bug ID: 52719
           Summary: cmd.exe mishandles echo %time%
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: cmd
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 72080
  --> https://bugs.winehq.org/attachment.cgi?id=72080
Check the date /t, %date%, time /t, %time% output

I was hoping to sprinkle some echo %time% in the test_builtins.cmd script to
figure out where it was spending time. But unfortunately in Wine all I get is:

c:> echo %time%
19:10

Whereas on Windows from XP to 21H1 I get:

c:> echo %time%
19:10:05.34

Fixing Wine to get the time with second resolution is easy, just drop
TIME_NOSECONDS from the GetTimeFormatW() call. But that call does not seem to
support returning subsecond data.
Yet %time% is localized (with a French system locale it uses a comma as the
decimal separator).

Also Wine mishandles date /t and time /t, particularly the latter since it does
not use the same format as plain "time".

For reference here is the output of the attached test patch:

English
=======

C:\Users\Public\Documents>date
The current date is: Wed 03/23/2022
Enter the new date: (mm-dd-yy)
C:\Users\Public\Documents>date /T
Wed 03/23/2022

C:\Users\Public\Documents>echo Wed 03/23/2022             <---- %date%
Wed 03/23/2022

C:\Users\Public\Documents>time
The current time is: 11:53:01.13
Enter the new time:
C:\Users\Public\Documents>time /T
11:53 AM

C:\Users\Public\Documents>echo 11:53:01.13                <---- %time%
11:53:01.13

French
======

C:\Users\Public\Documents>date
La date du jour est�: 23/03/2022
Entrez la nouvelle date�: (jj-mm-aa)
C:\Users\Public\Documents>date /T
23/03/2022

C:\Users\Public\Documents>echo 23/03/2022                 <--- %date%
23/03/2022

C:\Users\Public\Documents>time
L'heure actuelle est�: 20:23:28,60
Entrez la nouvelle heure�:
C:\Users\Public\Documents>time /T
20:23

C:\Users\Public\Documents>echo 20:23:28,60                <--- %time%
20:23:28,60