How to auto-indent code in the Atom editor? - code-formatting

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

I found the option in the menu, under Edit > Lines > Auto Indent. It doesn't seem to have a default keymap bound.
You could try to add a key mapping (Atom > Open Your Keymap [on Windows: File > Settings > Keybindings > "your keymap file"]) like this one:
'atom-text-editor':
'cmd-alt-l': 'editor:auto-indent'
It worked for me :)
For Windows:
'atom-text-editor':
'ctrl-alt-l': 'editor:auto-indent'

Answer 2

The accepted answer works, but you have to do a "Select All" first -- every time -- and I'm way too lazy for that.
And it turns out, it's not super trivial -- I figured I'd post this here in an attempt to save like-minded individuals the 30 minutes it takes to track all this down. -- Also note: this approach restores the original selection when it's done (and it happens so fast, you don't even notice the selection was ever changed).
1.) First, add a custom command to your init script (File->Open Your Init Script, then paste this at the bottom):
atom.commands.add 'atom-text-editor', 'custom:reformat', ->
editor = atom.workspace.getActiveTextEditor();
oldRanges = editor.getSelectedBufferRanges();
editor.selectAll();
atom.commands.dispatch(atom.views.getView(editor), 'editor:auto-indent')
editor.setSelectedBufferRanges(oldRanges);
2.) Bind "custom:reformat" to a key (File->Open Your Keymap, then paste this at the bottom):
'atom-text-editor':
'ctrl-alt-d': 'custom:reformat'
3.) Restart Atom (the init.coffee script only runs when atom is first launched).

Answer 3

Package auto-indent exists to apply auto-indent to entire file with this shortcuts :
ctrl+shift+i
or
cmd+shift+i
Package url : https://atom.io/packages/auto-indent

Answer 4

I prefer using atom-beautify, CTRL+ALT+B (in linux, may be in windows also) handles better al kind of formats and it is also customizable per file format.
more details here: https://atom.io/packages/atom-beautify

Answer 5

You can just quickly open up the command palette and do it there
Cmd + Shift + p and search for Editor: Auto Indent:

Answer 6

This works for me:
'atom-workspace atom-text-editor':
'ctrl-alt-a': 'editor:auto-indent'
You have to select all with ctrl-a first.

Answer 7

This is the best help that I found:
https://atom.io/packages/atom-beautify
This package can be installed in Atom and then CTRL+ALT+B solve the problem.

Answer 8

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)

Answer 9

If you have troubles with hotkeys, try to open Key Binding Resolver Window with Cmd + .. It will show you keys you're pressing in the realtime.
For example, Cmd + Shift + ' is actually Cmd + "

Answer 10

You could also try to add a key mapping witch auto select all the code in file and indent it:
'atom-text-editor':
'ctrl-alt-l': 'auto-indent:apply'

Answer 11

I was working on some groovy code, which doesn't auto-format on save. What I did was right-click on the code pane, then chose ESLint Fix. That fixed my indents.

Answer 12

If you are used to the Eclipse IDE or the Netbeans, you can use the package eclipse-keybindings (https://atom.io/packages/eclipse-keybindings):
This Atom package provides Eclipse IDE key mappings for Atom. Currently, the Eclipse shortcuts are directly mapped to existing Atom commands.
To format all lines from a file, just use: Ctrl+Shift+F.

Answer 13

Ctrl+Shift+i worked for me in PHP under Windows ... but some files did not react. Not being the brightest it took me a while to work out that it was the include files that were the problem. If you are using echo(' ... PHP ...') then the PHP does not get re-formatted. To get over this, create a temporary PHP file, say t.php, copy the PHP part into that, reindent it (Ctrl+Shift+i ... did I mention that?) and then copy the newly reformatted PHP back into the original file. Whilst this is a pain, it does give you correctly formatted PHP.