Project "Build directory" doesn't handle variables properly

Under Project >> Build Settings, the Build directory can be set using variables; as an example %{CurrentProject:NativePath}.

When variables are used, the path is not handled properly; here are the steps to reproduce:

• set the Build directory to %{CurrentProject:NativePath} (let's suppose this is

  C:\cygwin\home\Admin\myProject

  )

• move the mouse cursor over Build directory
• you see a tip saying "The path xxxx does not exist"
• xxxx should be the expansion of %{CurrentProject:NativePath} (i.e.

  C:\cygwin\home\Admin\myProject

  )

• xxxx is shown as

C:\cygwin\home\Admin\myProject\%{CurrentProject:NativePath}

• when this happens, an extra

  \..

  is necessary to skip the wrong %{CurrentProject:NativePath}