Wrong || evaulation in cmd.exe

[aes]

Hello,

There is an issue in cmd.exe || redirection: when a command exists with code 0, the commands after || gets executed anyway.

How to reproduce:

Code: Select all

reg /?
echo %errorlevel%
reg /? || echo failed

reg.exe is used as a ExitProcess(0) source. Both Windows cmd.exe and Wine print errorlevel 0, but Wine also prints "failed", and Windows does not.

Tested on wine-6.23 and wine-5.0.

[jkfloris]

You are right. The developers are aware of this bug.
You could read the bug report for more information.