All this does is switch the Obsidian Edit/Preview Mode to the other mode when you click on the file with the lines or spaces. You are then in that mode for all other files.
Its great that those line/space files force the mode, but then I still have to switch back when I go to another un-space-line-modified files.
Good work around for the desperate, but not exactly the solution.
Also, it might be better if the file marking was a visible character, like ppp or eee. Or make the characters a setting.
Front matter would also be better.
Sorry for complaining.