PATH problem with emerge's kdesettings.bat

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If before running kdesettings.bat, my path is
   C:\Windows;C:\Windows\System32
at the end it's
   c:\kderoot\emerge\bin;C:\Windows;C:\Windows\System32;c:\python25

So only the last line of this group
if %directory_layout% equ installer (
set PATH=%KDEROOT%\bin;%PATH%
set PATH=%KDEROOT%\lib;%PATH%
set PATH=%KDEROOT%\emerge\bin;%PATH%
)

worked.  Somehow the first two have no effect.


Here's a simpler batch file that shows the problem:

REM ---- cut and save as pathtest.bat ----
set TESTPATH=foo 
          directory_layout=installer
if %directory_layout% equ installer (
echo doing installer
set TESTPATH=\bin;%TESTPATH%
set TESTPATH=\lib;%TESTPATH%
set TESTPATH=\emerge\bin;%TESTPATH%
) else (
  echo not doing this
)

echo at end, TESTPATH=%TESTPATH%

REM ---- end save as pathtest.bat ----


Rather than evaluating each line in the if branch during execution and 
adding more and more to TESTPATH, my Windows XP SP2's cmd.exe just executes
  set TESTPATH=\bin;foo
  set TESTPATH=\lib;foo
  set TESTPATH=\emerge\bin;foo

and thus only the last line wins.  Perhaps cmd.exe "compiles" the entire 
if block at once, instead of line-by-line.

If I take out the if() test and just run these lines,  the PATH/TESTPATH 
variable does grow with each line.

Weird!
--
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