new file mode 100644
--- /dev/null
+++ b/runtime/syntax/dylanintr.vim
@@ -0,0 +1,52 @@
+" Vim syntax file
+" Language:	Dylan
+" Authors:	Justus Pendleton <justus@acm.org>
+" Last Change:	Fri Sep 29 13:53:27 PDT 2000
+"
+
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+  syntax clear
+elseif exists("b:current_syntax")
+  finish
+endif
+
+syn case ignore
+
+syn region	dylanintrInfo		matchgroup=Statement start="^" end=":" oneline
+syn match	dylanintrInterface	"define interface"
+syn match	dylanintrClass		"<.*>"
+syn region	dylanintrType		start=+"+ skip=+\\\\\|\\"+ end=+"+
+
+syn region	dylanintrIncluded	contained start=+"+ skip=+\\\\\|\\"+ end=+"+
+syn match	dylanintrIncluded	contained "<[^>]*>"
+syn match	dylanintrInclude	"^\s*#\s*include\>\s*["<]" contains=intrIncluded
+
+"syn keyword intrMods pointer struct
+
+" Define the default highlighting.
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_dylan_intr_syntax_inits")
+  if version < 508
+    let did_dylan_intr_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink dylanintrInfo		Special
+  HiLink dylanintrInterface	Operator
+  HiLink dylanintrMods		Type
+  HiLink dylanintrClass		StorageClass
+  HiLink dylanintrType		Type
+  HiLink dylanintrIncluded	String
+  HiLink dylanintrInclude	Include
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "dylanintr"
+
+" vim:ts=8