How to auto-indent code in the Atom editor?

Question

How do you auto-indent your code in the Atom editor? In other editors you can usually select some code and auto-indent it.

Is there a keyboard shortcut as well?

Answer 1

On Linux

(tested in Ununtu KDE)

There is the option in the menu, under Edit > Lines > Auto Indent or press Cmd + Shift + p, search for Editor: Auto Indent by entering just "ai"

Note: In KDE ctrl-alt-l is already globally set for "lock screen" so better use ctrl-alt-i instead.

You can add a key mapping in Atom:

• Cmd + Shift + p, search for "Settings View: Show Keybindings"
• click on "your keymap file"

• Add a section there like this one:

   'atom-text-editor':
      'ctrl-alt-i': 'editor:auto-indent'
  

If the indention is not working, it can be a reason, that the file-ending is not recognized by Atom. Add the support for your language then, for example for "Lua" install the package "language-lua".

If a File is not recognized for your language:

• open the ~/.atom/config.cson file (by CTRL+SHIFT+p: type ``open config'')

• add/edit a customFileTypes section under core for example like the following:

  core:
    customFileTypes:
      "source.lua": [
        "conf"
      ]
      "text.html.php": [
        "thtml"
      ]
  

(You find the languages scope names ("source.lua", "text.html.php"...) in the language package settings see here)