d08cebf6d7
In Preferences / Themes you can add a new theme with a name that has multiple words and the resulting file name will have spaces converted to underscores. Unfortunately such multi-word themes will not pass the poll function for saving and deletion. This PR just adds calls that convert from the display name to file name in order for these to work. Pull Request: https://projects.blender.org/blender/blender/pulls/122848