Fix detection of racket filetype, closes #720

autoload/polyglot/init.vim

@@ -604,7 +604,7 @@ if !has_key(g:polyglot_is_disabled, 'screen')
 endif
 
 if !has_key(g:polyglot_is_disabled, 'scheme')
-  au BufNewFile,BufRead *.rkt,*.scm,*.ss setf scheme
+  au BufNewFile,BufRead *.scm,*.ss setf scheme
 endif
 
 if !has_key(g:polyglot_is_disabled, 'catalog')

autoload/polyglot/sleuth.vim

@@ -470,7 +470,7 @@ let s:globs = {
   \ 'sather': '*.sa',
   \ 'sbt': '*.sbt',
   \ 'scala': '*.scala,*.kojo,*.sc',
-  \ 'scheme': '*.scm,*.ss,*.rkt',
+  \ 'scheme': '*.scm,*.ss',
   \ 'scilab': '*.sci,*.sce',
   \ 'screen': '.screenrc,screenrc',
   \ 'scss': '*.scss',

packages.yaml

@@ -4585,7 +4585,7 @@ glob: "**/scheme.vim"
 filetypes:
 - name: scheme
   patterns:
-  - pattern: "*.scm,*.ss,*.rkt"
+  - pattern: "*.scm,*.ss"
     description: Scheme
 ---
 name: screen

tests/extensions.vim

@@ -391,4 +391,6 @@ call TestExtension("conf", "auto.master", "")
 " https://github.com/sheerun/vim-polyglot/issues/579
 call TestExtension("dart", "reminders.dart", "")
 
+call TestExtension("racket", "empty.rkt", "")
+
 filetype off