Ruby: how to add “# encoding: UTF-8” automatically?

Question

Is there any gem which adds # encoding: UTF-8 to each Ruby file automatically?

Or is there any other way to prevent from the invalid multibyte cha

Answer 1

Adding a # encoding: UTF-8 to each Ruby file automatically makes only sense, when your files are really stored in UTF-8.

If your files are encoded CP850 (AFAIK default in Windows) and you use Non-ASCII characters, you replace invalid multibyte char (US-ASCII) with invalid multibyte char (UTF-8).

I would prefer a manual modification and check of each file, if it is really UTF-8.