Update

ftplugin/crystal.vim

@@ -12,7 +12,7 @@ if exists('loaded_matchit') && !exists('b:match_words')
   let b:match_ignorecase = 0
 
   let b:match_words =
-        \ '\<\%(if\|unless\|case\|while\|until\|for\|do\|class\|module\|struct\|lib\|macro\|ifdef\|def\|fun\|begin\)\>=\@!' .
+        \ '\<\%(if\|unless\|case\|while\|until\|for\|do\|class\|module\|struct\|lib\|macro\|ifdef\|def\|fun\|begin\|enum\)\>=\@!' .
         \ ':' .
         \ '\<\%(else\|elsif\|ensure\|when\|rescue\|break\|redo\|next\|retry\)\>' .
         \ ':' .

ftplugin/nginx.vim

@@ -0,0 +1,5 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'nginx') == -1
+  
+setlocal commentstring=#\ %s
+
+endif

ftplugin/plantuml.vim

@@ -3,13 +3,14 @@ if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'plantuml') == -
 " Vim plugin file
 " Language:     PlantUML
 " Maintainer:   Aaron C. Meadows < language name at shadowguarddev dot com>
-" Last Change:  19-Jun-2012
 " Version:      0.1
 
 if exists("b:loaded_plantuml_plugin")
   finish
 endif
 let b:loaded_plantuml_plugin = 1
+let s:cpo_save = &cpo
+set cpo&vim
 
 if !exists("g:plantuml_executable_script")
   let g:plantuml_executable_script="plantuml"
@@ -35,4 +36,7 @@ let b:endwise_words = 'loop,group,alt,note,legend'
 let b:endwise_pattern = '^\s*\zs\<\(loop\|group\|alt\|note\ze[^:]*$\|legend\)\>.*$'
 let b:endwise_syngroups = 'plantumlKeyword'
 
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 endif