How can I change Arduino IDE preferences for formatting? I found the preferences file: <user>/.arduino15/preferences.txt, but there are no lines that control IDE formatting. In Windows there is a special file for formatting: <ArduinoIDE_folder>/lib/formatter.conf.

  • same place <ArduinoIDE_folder>/lib/formatter.conf – Juraj Mar 29 '18 at 15:13
  • @Juraj , as <ArduinoIDE_folder> do u mean <user>/.arduino15? – koshachok Mar 29 '18 at 15:25
  • no, .arduino15 is on Windows C:\Users\User\AppData\Local\Arduino15. I installed Arduino IDE on linux into /home/user/arduino-1.8.5 – Juraj Mar 29 '18 at 15:43
  • I have my custom formatter.conf in /home/<user>/.arduino15 – Jot Mar 29 '18 at 15:56

It happened, that my formatter.conf was in /usr/share/arduino/lib/. So I copied it to /home/<user>/.arduino15/ folder and made changes that I needed. And also:

Copy it in the same folder of file "preferences.txt" and modify the copy. This way, you won't lose your custom formatter settings when upgrading the IDE.

  • That is correct. However, when upgrading, I often the remove the .arduino15 folder as well to make a fresh start. Recently I had to remove the .arduino15 folder without upgrading to a new version. The arduino ide was sometimes slow and had troubles when installing new libraries. – Jot Mar 29 '18 at 19:43

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