Missing tab width adjustment

[timchpi]

Is your feature request related to a problem? Please describe.
The tab width cannot be adjusted like in previous versions.

Describe the solution you'd like
Bring back the option to adjust tab width.

Please, and thank you :)

[per1234]

Hi @kxcheng. Thanks so much for your report. Unfortunately, I didn't manage to understand what you mean be adjusting the tab width. There is some ambiguity because the term "tab" is used to several completely different things in the context of the Arduino IDE:

• The whitespace produced by pressing the Tab key on the keyboard while using the IDE's editor.
• The GUI element used to switch between sketch files.
• The editor for each sketch file.

Please provide detailed instructions for the procedure you used to adjust the tab width in the previous versions.

Please tell us the exact previous version you were able to adjust the tab width in.

[timchpi]

Dear @per1234:
I apologise for the lack of clarity.
What I meant by tab width is the number of white spaces inserted when 'tab' key is pressed.

In version 1.8.15(and as far as I am aware of various other versions) the user can adjust this by opening C:\Users<username>\AppData\Local\Arduino15\preferences.txt, editing line 38 which default to "editor.tabs.size=2".

I would really really appreciate it if this feature is to be brought back.
Cheers,
Tim

[per1234]

Thank you for the clarification!

It is already possible to configure this via Arduino IDE's advanced settings:

1. Press the Ctrl+Shift+P keyboard shortcut (Command+Shift+P for macOS users) to open the "Command Palette".
2. Select the "Preferences: Open Settings (UI)" command from the menu.
   ⓘ You can scroll down through the list of commands to find it or type the name in the field.
   A "Preferences" tab will open in the Arduino IDE main panel.
3. Type editor.tabSize in the "Search Settings" field of the "Preferences" tab.
4. Set your preferred tab side in the field under the "Editor: Tab Size" setting.
5. Close the Preferences tab by clicking its X icon.

Even though you only mentioned the whitespace resulting from pressing Tab, most who want to customize that will also want to customize the IDE's auto format configuration to match. You can learn how to customize the formatter configuration from this tutorial:

https://docs.arduino.cc/software/ide-v2/tutorials/ide-v2-customize-auto-formatter

You will be interested in the IndentWidth setting.

---

If you like the approach required of Arduino IDE 1.x users of configuring advanced settings by editing a configuration file directly, you can open C:\Users<username>\AppData\.arduinoIDE\settings.json (~/.arduinoIDE/settings.json for any Linux users who are reading this) and then change the value of the editor.tabSize key.

---

Regards, Per

[timchpi]

I am sorry but neither of these seems to work for me?

Please advise,
Tim

[per1234]

The second screenshot shows you are opening the basic preferences via File > Preferences menu. The tab width is set in the advanced preferences. As I mentioned above, those are accessed by opening the Command Palette (Ctrl+Shift+P) and then selecting Settings: Open Preferences.

[timchpi]

My apologies. However, I am still unable to locate the setting in advanced setting page.

Also I am also unable to locate the file you mentioned.

Cheers,
Tim

[per1234]

It is called "Editor: Tab Size" in the advanced preferences GUI:

I am also unable to locate the file you mentioned.

You can open it in the Arduino IDE by clicking the {} icon:

But for those who aren't already familiar with the settings.json system from using VS Code, it will be much easier to just use the advanced preferences GUI to configure the IDE.

[timchpi]

I see. Thank you very much!

Tim