new file mode 100644
--- /dev/null
+++ b/runtime/syntax/sl.vim
@@ -0,0 +1,120 @@
+" Vim syntax file
+" Language:	Renderman shader language
+" Maintainer:	Dan Piponi <dan@tanelorn.demon.co.uk>
+" Last Change:	2001 May 09
+
+" 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
+
+" A bunch of useful Renderman keywords including special
+" RenderMan control structures
+syn keyword slStatement	break return continue
+syn keyword slConditional	if else
+syn keyword slRepeat		while for
+syn keyword slRepeat		illuminance illuminate solar
+
+syn keyword slTodo contained	TODO FIXME XXX
+
+" String and Character constants
+" Highlight special characters (those which have a backslash) differently
+syn match slSpecial contained	"\\[0-9][0-9][0-9]\|\\."
+syn region slString		start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=slSpecial
+syn match slCharacter		"'[^\\]'"
+syn match slSpecialCharacter	"'\\.'"
+syn match slSpecialCharacter	"'\\[0-9][0-9]'"
+syn match slSpecialCharacter	"'\\[0-9][0-9][0-9]'"
+
+"catch errors caused by wrong parenthesis
+syn region slParen		transparent start='(' end=')' contains=ALLBUT,slParenError,slIncluded,slSpecial,slTodo,slUserLabel
+syn match slParenError		")"
+syn match slInParen contained	"[{}]"
+
+"integer number, or floating point number without a dot and with "f".
+syn case ignore
+syn match slNumber		"\<[0-9]\+\(u\=l\=\|lu\|f\)\>"
+"floating point number, with dot, optional exponent
+syn match slFloat		"\<[0-9]\+\.[0-9]*\(e[-+]\=[0-9]\+\)\=[fl]\=\>"
+"floating point number, starting with a dot, optional exponent
+syn match slFloat		"\.[0-9]\+\(e[-+]\=[0-9]\+\)\=[fl]\=\>"
+"floating point number, without dot, with exponent
+syn match slFloat		"\<[0-9]\+e[-+]\=[0-9]\+[fl]\=\>"
+"hex number
+syn match slNumber		"\<0x[0-9a-f]\+\(u\=l\=\|lu\)\>"
+"syn match slIdentifier	"\<[a-z_][a-z0-9_]*\>"
+syn case match
+
+if exists("sl_comment_strings")
+  " A comment can contain slString, slCharacter and slNumber.
+  " But a "*/" inside a slString in a slComment DOES end the comment!  So we
+  " need to use a special type of slString: slCommentString, which also ends on
+  " "*/", and sees a "*" at the start of the line as comment again.
+  " Unfortunately this doesn't very well work for // type of comments :-(
+  syntax match slCommentSkip	contained "^\s*\*\($\|\s\+\)"
+  syntax region slCommentString	contained start=+"+ skip=+\\\\\|\\"+ end=+"+ end=+\*/+me=s-1 contains=slSpecial,slCommentSkip
+  syntax region slComment2String	contained start=+"+ skip=+\\\\\|\\"+ end=+"+ end="$" contains=slSpecial
+  syntax region slComment	start="/\*" end="\*/" contains=slTodo,slCommentString,slCharacter,slNumber
+else
+  syn region slComment		start="/\*" end="\*/" contains=slTodo
+endif
+syntax match slCommentError	"\*/"
+
+syn keyword slOperator	sizeof
+syn keyword slType		float point color string vector normal matrix void
+syn keyword slStorageClass	varying uniform extern
+syn keyword slStorageClass	light surface volume displacement transformation imager
+syn keyword slVariable	Cs Os P dPdu dPdv N Ng u v du dv s t
+syn keyword slVariable L Cl Ol E I ncomps time Ci Oi
+syn keyword slVariable Ps alpha
+syn keyword slVariable dtime dPdtime
+
+syn sync ccomment slComment minlines=10
+
+" 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_sl_syntax_inits")
+  if version < 508
+    let did_sl_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink slLabel	Label
+  HiLink slUserLabel	Label
+  HiLink slConditional	Conditional
+  HiLink slRepeat	Repeat
+  HiLink slCharacter	Character
+  HiLink slSpecialCharacter slSpecial
+  HiLink slNumber	Number
+  HiLink slFloat	Float
+  HiLink slParenError	slError
+  HiLink slInParen	slError
+  HiLink slCommentError	slError
+  HiLink slOperator	Operator
+  HiLink slStorageClass	StorageClass
+  HiLink slError	Error
+  HiLink slStatement	Statement
+  HiLink slType		Type
+  HiLink slCommentError	slError
+  HiLink slCommentString slString
+  HiLink slComment2String slString
+  HiLink slCommentSkip	slComment
+  HiLink slString	String
+  HiLink slComment	Comment
+  HiLink slSpecial	SpecialChar
+  HiLink slTodo	Todo
+  HiLink slVariable	Identifier
+  "HiLink slIdentifier	Identifier
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "sl"
+
+" vim: ts=8