Dear all, I'm writing you because I'm surprised with Arduino IDE behaviour, as you know every sketch must be included inside a folder with the same name, as you know in the name you cannot have spaces, and this name should not start with a number, those are the known rules, but sometimes are applicable and sometimes are not, and I want to know, why, under which circumstances could I start the name by a number, because I know this is possible, but I cannot find the rules to do it.
Regards:
JME
Looks like this is up your street.
Support for sketch names starting with a number was added Arduino IDE 1.8.4. So if you are using Arduino IDE 1.8.3 or older, or want to share your sketches with people using significantly outdated versions of the Arduino IDE, then you should not start the sketch name with a number. If your sketch is intended to be used with the modern versions of the Arduino IDE, then you're welcome to start it with a number.
Escrich:
I cannot find the rules to do it.
Well, it's here in the Arduino Sketch Specification:
https://arduino.github.io/arduino-cli/latest/sketch-specification/#sketch-root-folder
but you'll notice that it says spaces are also allowed. Support for spaces was recently added, but it is only available in Arduino CLI, and not yet in Arduino IDE. I have it on my "to do" list to improve the documentation regarding the support for spaces.
Sorry, but I can not totally agree with you, now I have version 1.8.13, the last one you can find on Arduino.cc, and with this version you can save a file with name starting by a number, but, if you open previous sketches, not always you’re able to save it with name stating by number, may depends on the sketch itself because I don’t know which reasons, maybe there is a bug, and not always can handle names in the right way.
Thanks for your answers and your time to all of you
If you will provide specific instructions I can use to reproduce the issue, I'll investigate and see if I can discover the problem.