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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@fanoush
I see now that it is not just some comment but part of documentation, so that's fine. It is just confusion caused by not seeing generated documentation yet.
FF could be solved by having some escape character and then escaping it and some FF replacement value similar to e.g. what SLIP does. But that would work only if you read it by characters and make a copy, not when results point directly to flash data. If these are meant to be text files it is probably not worth it.