External command without space between command and parameter does not work

[mdrmdr]

I'm on TCC 30.00.21 x64 on Windows 10 all updates.

chkdsk/? ➔ error unknown command
chkdsk /? ➔ works

In cmd.exe:
chkdsk/? ➔ works

Is that works as designed or an error?

 

[Charles Dye]

Open the OPTION dialog, and look for the option called "Unix/Linux-style paths". It's on the Startup tab. Turn it off if it's on.

 

[mdrmdr]

Ok, that solved it. Thanks :-)