Fix Sass beautification and close #1088

- Remove the incomplete Sass support provided by Pretty Diff and CSScomb
- Change the default beautifier of Sass to SassConvert

README.md

@@ -97,7 +97,7 @@ See [all supported options in the documentation at  `docs/options.md`](https://g
 | Riot.js | `Riot.js`, `HTML (Riot Tag)` |`.tag` | [`Pretty Diff`](https://github.com/prettydiff/prettydiff) (Default) |
 | Ruby | `Ruby`, `Ruby on Rails` |`.rb` | [`Rubocop`](https://github.com/bbatsov/rubocop) (Default), [`Ruby Beautify`](https://github.com/erniebrodeur/ruby-beautify) |
 | Rust | `Rust` |`.rs`, `.rlib` | [`rustfmt`](https://github.com/nrc/rustfmt) (Default) |
-| Sass | `Sass` |`.sass` | [`CSScomb`](https://github.com/csscomb/csscomb.js), [`Pretty Diff`](https://github.com/prettydiff/prettydiff) (Default) |
+| Sass | `Sass` |`.sass` | [`SassConvert`](http://sass-lang.com/documentation/file.SASS_REFERENCE.html#syntax) (Default) |
 | SCSS | `SCSS` |`.scss` | [`CSScomb`](https://github.com/csscomb/csscomb.js), [`Pretty Diff`](https://github.com/prettydiff/prettydiff) (Default) |
 | Spacebars | `Spacebars` | | [`Pretty Diff`](https://github.com/prettydiff/prettydiff) (Default) |
 | SQL | `SQL (Rails)`, `SQL` |`.sql` | [`sqlformat`](https://github.com/andialbrecht/sqlparse) (Default) |

src/beautifiers/csscomb.coffee

@@ -12,7 +12,6 @@ module.exports = class JSBeautify extends Beautifier
       predefinedConfig: true
     CSS: true
     LESS: true
-    Sass: true
     SCSS: true
   }
 

src/beautifiers/prettydiff.coffee

@@ -55,7 +55,6 @@ module.exports = class PrettyDiff extends Beautifier
     JavaScript: true
     CSS: true
     SCSS: true
-    Sass: true
     JSON: true
     TSS: true
     Twig: true
@@ -103,7 +102,7 @@ module.exports = class PrettyDiff extends Beautifier
           lang = "css"
         when "LESS"
           lang = "less"
-        when "SCSS", "Sass"
+        when "SCSS"
           lang = "scss"
         when "TSS"
           lang = "tss"

src/languages/sass.coffee

@@ -2,7 +2,7 @@ module.exports = {
 
   name: "Sass"
   namespace: "sass"
-  fallback: ['css', 'scss']
+  fallback: ['css']
 
   ###
   Supported Grammars
@@ -18,6 +18,6 @@ module.exports = {
     "sass"
   ]
 
-  defaultBeautifier: "Pretty Diff"
+  defaultBeautifier: "SassConvert"
 
 }