anchor.diff:  
   IF /I "%build-test%" EQU "false" GOTO :nuget-package
   
  -CALL :file-exists MSTest exe
  +CALL :findfile MSTest exe
   IF "%MSTestPath%" == "" (
     ECHO MSTest.exe does not exist or is not under PATH. Will not run tests.
     GOTO :exit
  
positive.code: 
  rem Build NuGet package
  ECHO.
  CALL :file-exists NuGet exe
  IF "%NuGetPath%" == "" (
    ECHO NuGet.exe does not exist or is not under PATH.
    ECHO If you want to build NuGet package, install NuGet.CommandLine
  
negative.code: 
  SET return-code=0
  
  CALL :findfile MSBuild exe
  IF "%MSBuildPath%" == "" (
    ECHO MSBuild.exe does not exist or is not under PATH.
    ECHO This can be resolved by building from a VS developer command prompt.
  