[Bug 37478] New: cmd doesn't handle "else if" correctly in all cases

https://bugs.winehq.org/show_bug.cgi?id=37478

Bug ID: 37478
           Summary: cmd doesn't handle "else if" correctly in all cases
           Product: Wine
           Version: 1.7.28
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: cmd
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

cmd.exe doesn't seem to handle "else if" constructs correctly in all
cases.  This is making it difficult for me to run some complex build
scripts under wine.

Using this batch file:

C:\Users\bjj\Documents>type try.bat
@REM bjj test hack
@echo off
echo Args: "%1" "%2" "%3" "%4"

if /I "%1" == "DEBUG" (
  echo It is debug
) else if /I "%1" == "RELEASE" (
  echo It is release
) else if /I "%1" == "TRY" (
  echo It is try
) else (
  echo it is neither: "%1"
)

On Windows 7, all the branches seem to be handled correctly:

C:\Users\bjj\Documents>try foo
Args: "foo" "" "" ""
it is neither: "foo"

C:\Users\bjj\Documents>try DEBUG
Args: "DEBUG" "" "" ""
It is debug

C:\Users\bjj\Documents>try RELEASE
Args: "RELEASE" "" "" ""
It is release

C:\Users\bjj\Documents>try TRY
Args: "TRY" "" "" ""
It is try

However, on wine 1.7.28 the "else" branch is sometimes executed when
it shouldn't be:

W:>try foo
Args: "foo" "" "" ""
it is neither: "foo"

W:>try DEBUG
Args: "DEBUG" "" "" ""
It is debug
it is neither: "DEBUG"

W:>try RELEASE
Args: "RELEASE" "" "" ""
It is release
it is neither: "RELEASE"

W:>try TRY
Args: "TRY" "" "" ""
It is try

Judging from this example, it appears that the "else" clause is only skipped
if the final "if .. else if ..." clause is true.  If one of the earlier
clasues is true, the final "else" is unexpectedly executed.

I haven't tried this batch file with earlier versions of wine.

Thanks,
Brian