How do I force Sublime Text to indent two spaces per tab?

Is there a way to force Sublime Text 2 to always indent two spaces per tab when working with Ruby files?

I know that indentation can be set under the view -> indentation menu option, but it does not stick. Every time I open a new file and hit tab, it reverts back to four spaces.

Solution 1:

If you want it for all files, go to Preferences -> Settings - Default/User. But as several comments below indicate, Syntax Specific settings can limit it to just the languages you choose.

To limit this configuration to Ruby files, first open up a Ruby file in the editor, and then go to Preferences -> Settings - Syntax Specific. This should open a settings window named Ruby.sublime-settings

Save these settings:

{
  "tab_size": 2,
  "translate_tabs_to_spaces": true,
  "detect_indentation": false
}

Repeat for any other syntax types by opening a file of that type and going back to the preferences to open the correct preferences file for that syntax.

I have edited this to include the "detect_indentation" line per the requests in comments; I previously used the Default/User to set my tab size, and have not needed the tab detection, but whether that is due to the global config or due to the fact that I have rarely opened files with tabs, I do not know.

Restarting should not be necessary, although in some instances it can be.

Solution 2:

If you want to force your chosen tab setting, ignoring what's likely already going on in the file, then you should include detect_indentation in your configuration (your User settings or your Syntax Specific settings, depending on if you want it global or per-filetype):

{
    "tab_size": 2,
    "translate_tabs_to_spaces": true,
    "detect_indentation": false
}

Solution 3:

You can also do this with the text link in the bottom bar of Sublime Text 2 ( On the right side ) that says "Tab Size 4" by default, click that and a window comes up with options to set the tab size from 1 space all the way up to 8 spaces and includes options to convert tabs to spaces and spaces to tabs.

Looks like this:

Solution 4:

Can I suggest EditorConfig? There is an extension to autoload and apply the .editorconfig file. Then just create one in the root of your project.

.editorconfig

[*.rb]
indent_style = tab
indent_size = 2

This way, your settings are project-specific and file-specific if you use different styles for each project or language.

Here is what my own .editorconfig looks like.

# editorconfig.org
root = true

[*]
indent_style = space
indent_size = 2
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true