Update

This functionality is now in core, I'll no longer be supplying support syntax-settings. See here for details.

syntax-settings package

Syntax specific settings there in your config.

Installation

apm install syntax-settings

Usage

You can easily add languages according to the grammar scopeName. Below is an example of modifying the python (source.python) settings:

'syntax-settings':
  'source':
    'python':
      'editorSettings':
        'tabLength': 4
      'editorViewSettings':
        'showInvisibles': false
        'softWrap': false
        'showIndentGuide': false
      'gutterViewSettings':
        'showLineNumbers': true

To find out which grammar you are using, open Developer Settings (View => Developer => Toggle Developer Tools) and run:

atom.workspace.getActiveEditor().getGrammar().scopeName

Supported Settings

Below is a list of supported settings:

editorSettings

• softTabs
• softWrap
• tabLength

editorViewSettings

• fontFamily
• fontSize
• invisibles
• placeholderText
• showIndentGuide
• showInvisibles
• softWrap

gutterViewSettings

• showLineNumbers

Todo

• Read through atom source to find more views/settings that are worth implementing