Renaming the files is not really a solution. Two reasons:
Reason one: Some of the files were created directly in the Google Docs or Spreadsheets interface. We don’t know what encoding uses Google to internaly store that data.
Reason two: Shared folders.
In my case - and i can say many other users too -, many of the files that are not syncing in Linux come from shared folders i don’t control, cannot enforce renaming and don’t know their content with 100% accuracy. But being shared folders i DO really need to get every bit (literaly) that my partners shared with me, with no excuse.
Someone shared the folder with me, i was asking him desperately for some graphic pieces we needed to complete a project, he said he already sent them, but i was telling him i had not them in my folder, after many lost hours i came down to realize the problem was not his, but on my side, on Insync.
I’m testing Insync to see if it suit my needs, but this isssue is going to cause more trouble than good. Not only for me but also for people in shared folders where renaming files is not an option.