Update dependencies

after/syntax/rust.vim

@@ -1,12 +1,14 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'rust') == -1
   
-if !exists('g:rust_conceal') || g:rust_conceal == 0 || !has('conceal') || &enc != 'utf-8'
-	finish
+scriptencoding utf-8
+
+if !get(g:, 'rust_conceal', 0) || !has('conceal') || &encoding !=# 'utf-8'
+    finish
 endif
 
 " For those who don't want to see `::`...
-if exists('g:rust_conceal_mod_path') && g:rust_conceal_mod_path != 0
-	syn match rustNiceOperator "::" conceal cchar=ㆍ
+if get(g:, 'rust_conceal_mod_path', 0)
+    syn match rustNiceOperator "::" conceal cchar=ㆍ
 endif
 
 syn match rustRightArrowHead contained ">" conceal cchar= 
@@ -20,7 +22,7 @@ syn match rustNiceOperator "=>" contains=rustFatRightArrowHead,rustFatRightArrow
 syn match rustNiceOperator /\<\@!_\(_*\>\)\@=/ conceal cchar=′
 
 " For those who don't want to see `pub`...
-if exists('g:rust_conceal_pub') && g:rust_conceal_pub != 0
+if get(g:, 'rust_conceal_pub', 0)
     syn match rustPublicSigil contained "pu" conceal cchar=＊
     syn match rustPublicRest contained "b" conceal cchar= 
     syn match rustNiceOperator "pub " contains=rustPublicSigil,rustPublicRest
@@ -28,11 +30,16 @@ endif
 
 hi link rustNiceOperator Operator
 
-if !(exists('g:rust_conceal_mod_path') && g:rust_conceal_mod_path != 0)
+if !get(g:, 'rust_conceal_mod_path', 0)
     hi! link Conceal Operator
 
-    " And keep it after a colorscheme change
-    au ColorScheme <buffer> hi! link Conceal Operator
+    augroup rust.vim.after
+        autocmd!
+        " And keep it after a colorscheme change
+        autocmd ColorScheme <buffer> hi! link Conceal Operator
+    augroup END
 endif
 
+" vim: set et sw=4 sts=4 ts=8:
+
 endif