add support for stylus

Author: i18nsite

README.md

@@ -10,7 +10,7 @@
 </a>
 </p>
 
-Vim syntax and indent plugin for `.svelte` files. Forked from [vim-vue-plugin][3]. 
+Vim syntax and indent plugin for `.svelte` files. Forked from [vim-vue-plugin][3].
 
 ## Installation
 
@@ -71,11 +71,12 @@ Set global variable to `1` to enable or `0` to disable. Ex:
 | g:vim_svelte_plugin_use_typescript     | Enable typescript syntax for `<script lang="ts">`.                                                                                                                          | 0       |
 | g:vim_svelte_plugin_use_less           | Enable less syntax for `<style lang="less">`.                                                                                                                               | 0       |
 | g:vim_svelte_plugin_use_sass           | Enable scss syntax for `<style lang="scss">`(or sass for `lang="sass"`).                                                                                                    | 0       |
+| g:vim_svelte_plugin_use_stylus           | Enable stylus syntax for `<style lang="stylus">`.                                                                                                                               | 0       |
 | g:vim_svelte_plugin_has_init_indent    | Initially indent one tab inside `style/script` tags.                                                                                                                        | 1       |
 | g:vim_svelte_plugin_use_foldexpr       | Enable builtin `foldexpr` foldmethod.                                                                                                                                       | 0       |
 | g:vim_svelte_plugin_debug              | Echo debug messages in `messages` list. Useful to debug if unexpected indents occur.                                                                                        | 0       |
 
-\*: Vim may be slow if the feature is enabled. Find a balance between syntax highlight and speed. By the way, custom syntax can be added in `~/.vim/syntax` or `$VIM/vimfiles/syntax`. 
+\*: Vim may be slow if the feature is enabled. Find a balance between syntax highlight and speed. By the way, custom syntax can be added in `~/.vim/syntax` or `$VIM/vimfiles/syntax`.
 
 **Note**
 

syntax/svelte.vim

@@ -22,6 +22,7 @@ let s:load_full_syntax = svelte#GetConfig('load_full_syntax', 0)
 let s:use_pug = svelte#GetConfig('use_pug', 0)
 let s:use_less = svelte#GetConfig('use_less', 0)
 let s:use_sass = svelte#GetConfig('use_sass', 0)
+let s:use_stylus = svelte#GetConfig('use_stylus', 0)
 let s:use_coffee = svelte#GetConfig('use_coffee', 0)
 let s:use_typescript = svelte#GetConfig('use_typescript', 0)
 "}}}
@@ -104,6 +105,11 @@ if s:use_less
   runtime! after/syntax/less.vim
 endif
 
+" If sass is enabled, load sass syntax 
+if s:use_stylus
+  call s:LoadSyntax('@StylusSyntax', 'stylus')
+endif
+
 " If sass is enabled, load sass syntax 
 if s:use_sass
   call s:LoadSyntax('@SassSyntax', 'sass')
@@ -204,6 +210,10 @@ syntax region cssScssSvelteStyle fold
       \ start=+<style[^>]*lang="scss"[^>]*>+ 
       \ end=+</style>+ 
       \ keepend contains=@SassSyntax,svelteTag
+syntax region cssStylusSvelteStyle fold
+      \ start=+<style[^>]*lang="stylus"[^>]*>+ 
+      \ end=+</style>+ 
+      \ keepend contains=@StylusSyntax,svelteTag
 
 syntax region svelteTag 
       \ start=+^<[^/]+ end=+>+  skip=+></+
@@ -243,6 +253,7 @@ if s:use_less
         \ contained containedin=cssLessSvelteStyle
         \ start="{" end="}" 
 endif
+
 if s:use_sass
   silent! syntax clear sassDefinition
   syntax region cssSassDefinition matchgroup=cssBraces 
@@ -251,6 +262,14 @@ if s:use_sass
         \ start="{" end="}" 
 endif
 
+if s:use_stylus
+  silent! syntax clear stylusDefinition
+  syntax region cssStylusDefinition matchgroup=cssBraces 
+        \ contains=@StylusSyntax,cssStylusDefinition
+        \ contained containedin=cssStylusSvelteStyle
+        \ start="{" end="}" 
+endif
+
 " Avoid css syntax interference
 silent! syntax clear cssUnitDecorators
 " Have to use a different name