id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5987,Error in boost-build/jam_src/build.bat,multisitetracker@…,Vladimir Prus,"in :Start
if ""_%1_"" == ""__"" (
    call :Guess_Toolset
    if not errorlevel 1 goto Setup_Toolset
) else (
    call :Test_Option ""%1""
    if not errorlevel 1 ( <-- error here
        call :Guess_Toolset
        if not errorlevel 1 goto Setup_Toolset
    ) else (
        setlocal & endlocal
        set ""BOOST_JAM_TOOLSET=%1""
        shift
        goto Setup_Toolset
    )
)

is incorrect, will always ignore specified toolset, should be

if ""_%1_"" == ""__"" (
    call :Guess_Toolset
    if not errorlevel 1 goto Setup_Toolset
) else (
    call :Test_Option ""%1""
    if errorlevel 1 (
        call :Guess_Toolset
        if not errorlevel 1 goto Setup_Toolset
    ) else (
        setlocal & endlocal
        set ""BOOST_JAM_TOOLSET=%1""
        shift
        goto Setup_Toolset
    )
)
which then allows 
>build mingw 
to work correctly",Bugs,new,To Be Determined,build,Boost 1.47.0,Problem,,script error,