[Bug 55402] New: CMD '!var!' not working in 'if' statement

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55402

Bug ID: 55402
           Summary: CMD '!var!' not working in 'if' statement
           Product: Wine
           Version: 8.0.2
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: cmd
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

The command not working
    set var=qwe
    if "!var!"=="" ...

ACTUAL
The script (attached) produces wrong output

EXPECTED
See the output in .exp file (attached)