Update

ftplugin/ecrystal.vim

@@ -0,0 +1,100 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'crystal') == -1
+
+if exists('b:did_ftplugin')
+  finish
+endif
+
+" Define some defaults in case the included ftplugins don't set them.
+let s:comments = ''
+let s:shiftwidth = ''
+let s:undo_ftplugin = ''
+let s:browsefilter = 'All Files (*.*)\t*.*\n'
+let s:match_words = ''
+
+call ecrystal#SetSubtype()
+
+if b:ecrystal_subtype !=# ''
+  exe 'runtime! ftplugin/'.b:ecrystal_subtype.'.vim ftplugin/'.b:ecrystal_subtype.'_*.vim ftplugin/'.b:ecrystal_subtype.'/*.vim'
+  unlet! b:did_ftplugin
+
+  " Keep the comments for this filetype
+  let s:comments = escape(&comments, ' \')
+
+  " Keep the shiftwidth for this filetype
+  let s:shiftwidth = &shiftwidth
+
+  " Override our defaults if these were set by an included ftplugin.
+  if exists('b:undo_ftplugin')
+    let s:undo_ftplugin = b:undo_ftplugin
+    unlet b:undo_ftplugin
+  endif
+  if exists('b:browsefilter')
+    let s:browsefilter = b:browsefilter
+    unlet b:browsefilter
+  endif
+  if exists('b:match_words')
+    let s:match_words = b:match_words
+    unlet b:match_words
+  endif
+endif
+
+runtime! ftplugin/crystal.vim ftplugin/crystal_*.vim ftplugin/crystal/*.vim
+let b:did_ftplugin = 1
+
+" Combine the new set of values with those previously included.
+if exists('b:undo_ftplugin')
+  let s:undo_ftplugin = b:undo_ftplugin . ' | ' . s:undo_ftplugin
+endif
+if exists ('b:browsefilter')
+  let s:browsefilter = substitute(b:browsefilter,'\cAll Files (\*\.\*)\t\*\.\*\n','','') . s:browsefilter
+endif
+if exists('b:match_words')
+  let s:match_words = b:match_words . ',' . s:match_words
+endif
+
+" Change the browse dialog on Win32 to show mainly eCrystal-related files
+if has('gui_win32')
+  let b:browsefilter='eCrystal Files (*.ecr)\t*.ecr\n' . s:browsefilter
+endif
+
+" Load the combined list of match_words for matchit.vim
+if exists('loaded_matchit')
+  let b:match_words = s:match_words
+endif
+
+" Define additional pairs for jiangmiao/auto-pairs
+if exists('AutoPairsLoaded')
+  let b:AutoPairs = {
+        \ '<%': '%>',
+        \ '<%=': '%>',
+        \ '<%#': '%>',
+        \ '<%-': '-%>',
+        \ '<%-=': '-%>',
+        \ '<%-#': '-%>',
+        \ }
+
+  call extend(b:AutoPairs, g:AutoPairs, 'force')
+endif
+
+" Load the subtype's vim-endwise settings
+if exists('loaded_endwise') && b:ecrystal_subtype !=# ''
+  exec 'doautocmd endwise FileType ' . b:ecrystal_subtype
+endif
+
+" Start RagTag
+if exists('loaded_ragtag')
+  call RagtagInit()
+endif
+
+exec 'setlocal comments='.s:comments
+exec 'setlocal shiftwidth='.s:shiftwidth
+setlocal commentstring=<%#%s%>
+
+setlocal suffixesadd=.ecr
+
+let b:undo_ftplugin = 'setlocal comments< commentstring< shiftwidth<' .
+      \ '| unlet! b:browsefilter b:match_words ' .
+      \ '| unlet! b:AutoPairs ' .
+      \ '| ' . s:undo_ftplugin
+
+endif