ever wandered to organize your sketch code into a folder structure?
ever wandered to import complex project from and to other IDE witch use folder organization without have to modify every single include?
if you are lost in your sketch's file, then this the MOD for you! It enable the IDE to copy libraries and sketch sub-folder to be copied in the temporary library where the real compilation happen! everything else is worked out by default by compiler!
Now you can have in your sketch a sub-folder witch contains modded-ad-hoc libraries, sub-folder for every sensor's code, and so on!
And this is actually a pull request, so support this post to see this mod became the standard of the next IDE version!! (https://github.com/arduino/Arduino/pull/116
sub-folder's code is not displayed in the IDE, I'll fix this when I'll have some more free time.
also some libraries support and use "utility" sub-folder, but the include is not path standard.
so you have to change
use "/" as path separator, because it is compatible with all system, while "\" path separator work only with Windows. IDE's library has been already patched