Always use forward slashes, even on Windows?

[belluzj]

Hello,

I'm using MutatotMath on Windows and the line 217 of document.py uses os.path, so it always replaces forward slashes with backward slashes on Windows. There might be an issue if someone generates a design space document on windows and tries to use it on linux/mac, so maybe the spec could be updated to say that the filename attribute should always use forward slashes; by adding a bullet point to this list:

https://github.com/LettError/designSpaceDocument/blob/master/README.md#paths-and-filenames

What do you think?

@moyogo

[anthrotype]

I agree it's better to normalize this and always use forward slashes for path names in the designspace.
I think relative paths with forward slashes should work on Windows as well.

[belluzj]

OK, I will open a pull request here and in MutatorMath.