new file mode 100644
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+++ b/runtime/syntax/c.vim
@@ -0,0 +1,345 @@
+" Vim syntax file
+" Language:	C
+" Maintainer:	Bram Moolenaar <Bram@vim.org>
+" Last Change:	2004 Feb 04
+
+" 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 C keywords
+syn keyword	cStatement	goto break return continue asm
+syn keyword	cLabel		case default
+syn keyword	cConditional	if else switch
+syn keyword	cRepeat		while for do
+
+syn keyword	cTodo		contained TODO FIXME XXX
+
+" cCommentGroup allows adding matches for special things in comments
+syn cluster	cCommentGroup	contains=cTodo
+
+" String and Character constants
+" Highlight special characters (those which have a backslash) differently
+syn match	cSpecial	display contained "\\\(x\x\+\|\o\{1,3}\|.\|$\)"
+if !exists("c_no_utf")
+  syn match	cSpecial	display contained "\\\(u\x\{4}\|U\x\{8}\)"
+endif
+if exists("c_no_cformat")
+  syn region	cString		start=+L\="+ skip=+\\\\\|\\"+ end=+"+ contains=cSpecial,@Spell
+  " cCppString: same as cString, but ends at end of line
+  syn region	cCppString	start=+L\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"+ end='$' contains=cSpecial,@Spell
+else
+  syn match	cFormat		display "%\(\d\+\$\)\=[-+' #0*]*\(\d*\|\*\|\*\d\+\$\)\(\.\(\d*\|\*\|\*\d\+\$\)\)\=\([hlL]\|ll\)\=\([bdiuoxXDOUfeEgGcCsSpn]\|\[\^\=.[^]]*\]\)" contained
+  syn match	cFormat		display "%%" contained
+  syn region	cString		start=+L\="+ skip=+\\\\\|\\"+ end=+"+ contains=cSpecial,cFormat,@Spell
+  " cCppString: same as cString, but ends at end of line
+  syn region	cCppString	start=+L\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"+ end='$' contains=cSpecial,cFormat,@Spell
+endif
+
+syn match	cCharacter	"L\='[^\\]'"
+syn match	cCharacter	"L'[^']*'" contains=cSpecial
+if exists("c_gnu")
+  syn match	cSpecialError	"L\='\\[^'\"?\\abefnrtv]'"
+  syn match	cSpecialCharacter "L\='\\['\"?\\abefnrtv]'"
+else
+  syn match	cSpecialError	"L\='\\[^'\"?\\abfnrtv]'"
+  syn match	cSpecialCharacter "L\='\\['\"?\\abfnrtv]'"
+endif
+syn match	cSpecialCharacter display "L\='\\\o\{1,3}'"
+syn match	cSpecialCharacter display "'\\x\x\{1,2}'"
+syn match	cSpecialCharacter display "L'\\x\x\+'"
+
+"when wanted, highlight trailing white space
+if exists("c_space_errors")
+  if !exists("c_no_trail_space_error")
+    syn match	cSpaceError	display excludenl "\s\+$"
+  endif
+  if !exists("c_no_tab_space_error")
+    syn match	cSpaceError	display " \+\t"me=e-1
+  endif
+endif
+
+"catch errors caused by wrong parenthesis and brackets
+" also accept <% for {, %> for }, <: for [ and :> for ] (C99)
+" But avoid matching <::.
+syn cluster	cParenGroup	contains=cParenError,cIncluded,cSpecial,cCommentSkip,cCommentString,cComment2String,@cCommentGroup,cCommentStartError,cUserCont,cUserLabel,cBitField,cCommentSkip,cOctalZero,cCppOut,cCppOut2,cCppSkip,cFormat,cNumber,cFloat,cOctal,cOctalError,cNumbersCom
+if exists("c_no_bracket_error")
+  syn region	cParen		transparent start='(' end=')' contains=ALLBUT,@cParenGroup,cCppParen,cCppString,@Spell
+  " cCppParen: same as cParen but ends at end-of-line; used in cDefine
+  syn region	cCppParen	transparent start='(' skip='\\$' excludenl end=')' end='$' contained contains=ALLBUT,@cParenGroup,cParen,cString,@Spell
+  syn match	cParenError	display ")"
+  syn match	cErrInParen	display contained "[{}]\|<%\|%>"
+else
+  syn region	cParen		transparent start='(' end=')' contains=ALLBUT,@cParenGroup,cCppParen,cErrInBracket,cCppBracket,cCppString,@Spell
+  " cCppParen: same as cParen but ends at end-of-line; used in cDefine
+  syn region	cCppParen	transparent start='(' skip='\\$' excludenl end=')' end='$' contained contains=ALLBUT,@cParenGroup,cErrInBracket,cParen,cBracket,cString,@Spell
+  syn match	cParenError	display "[\])]"
+  syn match	cErrInParen	display contained "[\]{}]\|<%\|%>"
+  syn region	cBracket	transparent start='\[\|<::\@!' end=']\|:>' contains=ALLBUT,@cParenGroup,cErrInParen,cCppParen,cCppBracket,cCppString,@Spell
+  " cCppBracket: same as cParen but ends at end-of-line; used in cDefine
+  syn region	cCppBracket	transparent start='\[\|<::\@!' skip='\\$' excludenl end=']\|:>' end='$' contained contains=ALLBUT,@cParenGroup,cErrInParen,cParen,cBracket,cString,@Spell
+  syn match	cErrInBracket	display contained "[);{}]\|<%\|%>"
+endif
+
+"integer number, or floating point number without a dot and with "f".
+syn case ignore
+syn match	cNumbers	display transparent "\<\d\|\.\d" contains=cNumber,cFloat,cOctalError,cOctal
+" Same, but without octal error (for comments)
+syn match	cNumbersCom	display contained transparent "\<\d\|\.\d" contains=cNumber,cFloat,cOctal
+syn match	cNumber		display contained "\d\+\(u\=l\{0,2}\|ll\=u\)\>"
+"hex number
+syn match	cNumber		display contained "0x\x\+\(u\=l\{0,2}\|ll\=u\)\>"
+" Flag the first zero of an octal number as something special
+syn match	cOctal		display contained "0\o\+\(u\=l\{0,2}\|ll\=u\)\>" contains=cOctalZero
+syn match	cOctalZero	display contained "\<0"
+syn match	cFloat		display contained "\d\+f"
+"floating point number, with dot, optional exponent
+syn match	cFloat		display contained "\d\+\.\d*\(e[-+]\=\d\+\)\=[fl]\="
+"floating point number, starting with a dot, optional exponent
+syn match	cFloat		display contained "\.\d\+\(e[-+]\=\d\+\)\=[fl]\=\>"
+"floating point number, without dot, with exponent
+syn match	cFloat		display contained "\d\+e[-+]\=\d\+[fl]\=\>"
+if !exists("c_no_c99")
+  "hexadecimal floating point number, optional leading digits, with dot, with exponent
+  syn match	cFloat		display contained "0x\x*\.\x\+p[-+]\=\d\+[fl]\=\>"
+  "hexadecimal floating point number, with leading digits, optional dot, with exponent
+  syn match	cFloat		display contained "0x\x\+\.\=p[-+]\=\d\+[fl]\=\>"
+endif
+
+" flag an octal number with wrong digits
+syn match	cOctalError	display contained "0\o*[89]\d*"
+syn case match
+
+if exists("c_comment_strings")
+  " A comment can contain cString, cCharacter and cNumber.
+  " But a "*/" inside a cString in a cComment DOES end the comment!  So we
+  " need to use a special type of cString: cCommentString, 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	cCommentSkip	contained "^\s*\*\($\|\s\+\)"
+  syntax region cCommentString	contained start=+L\=\\\@<!"+ skip=+\\\\\|\\"+ end=+"+ end=+\*/+me=s-1 contains=cSpecial,cCommentSkip
+  syntax region cComment2String	contained start=+L\=\\\@<!"+ skip=+\\\\\|\\"+ end=+"+ end="$" contains=cSpecial
+  syntax region  cCommentL	start="//" skip="\\$" end="$" keepend contains=@cCommentGroup,cComment2String,cCharacter,cNumbersCom,cSpaceError,@Spell
+  syntax region cComment	matchgroup=cCommentStart start="/\*" end="\*/" contains=@cCommentGroup,cCommentStartError,cCommentString,cCharacter,cNumbersCom,cSpaceError,@Spell
+else
+  syn region	cCommentL	start="//" skip="\\$" end="$" keepend contains=@cCommentGroup,cSpaceError,@Spell
+  syn region	cComment	matchgroup=cCommentStart start="/\*" end="\*/" contains=@cCommentGroup,cCommentStartError,cSpaceError,@Spell
+endif
+" keep a // comment separately, it terminates a preproc. conditional
+syntax match	cCommentError	display "\*/"
+syntax match	cCommentStartError display "/\*"me=e-1 contained
+
+syn keyword	cOperator	sizeof
+if exists("c_gnu")
+  syn keyword	cStatement	__asm__
+  syn keyword	cOperator	typeof __real__ __imag__
+endif
+syn keyword	cType		int long short char void
+syn keyword	cType		signed unsigned float double
+if !exists("c_no_ansi") || exists("c_ansi_typedefs")
+  syn keyword   cType		size_t ssize_t wchar_t ptrdiff_t sig_atomic_t fpos_t
+  syn keyword   cType		clock_t time_t va_list jmp_buf FILE DIR div_t ldiv_t
+  syn keyword   cType		mbstate_t wctrans_t wint_t wctype_t
+endif
+if !exists("c_no_c99") " ISO C99
+  syn keyword	cType		bool complex
+  syn keyword	cType		int8_t int16_t int32_t int64_t
+  syn keyword	cType		uint8_t uint16_t uint32_t uint64_t
+  syn keyword	cType		int_least8_t int_least16_t int_least32_t int_least64_t
+  syn keyword	cType		uint_least8_t uint_least16_t uint_least32_t uint_least64_t
+  syn keyword	cType		int_fast8_t int_fast16_t int_fast32_t int_fast64_t
+  syn keyword	cType		uint_fast8_t uint_fast16_t uint_fast32_t uint_fast64_t
+  syn keyword	cType		intptr_t uintptr_t
+  syn keyword	cType		intmax_t uintmax_t
+endif
+if exists("c_gnu")
+  syn keyword	cType		__label__ __complex__ __volatile__
+endif
+
+syn keyword	cStructure	struct union enum typedef
+syn keyword	cStorageClass	static register auto volatile extern const
+if exists("c_gnu")
+  syn keyword	cStorageClass	inline __attribute__
+endif
+if !exists("c_no_c99")
+  syn keyword	cStorageClass	inline restrict
+endif
+
+if !exists("c_no_ansi") || exists("c_ansi_constants") || exists("c_gnu")
+  if exists("c_gnu")
+    syn keyword cConstant __GNUC__ __FUNCTION__ __PRETTY_FUNCTION__
+  endif
+  syn keyword cConstant __LINE__ __FILE__ __DATE__ __TIME__ __STDC__
+  syn keyword cConstant __STDC_VERSION__
+  syn keyword cConstant CHAR_BIT MB_LEN_MAX MB_CUR_MAX
+  syn keyword cConstant UCHAR_MAX UINT_MAX ULONG_MAX USHRT_MAX
+  syn keyword cConstant CHAR_MIN INT_MIN LONG_MIN SHRT_MIN
+  syn keyword cConstant CHAR_MAX INT_MAX LONG_MAX SHRT_MAX
+  syn keyword cConstant SCHAR_MIN SINT_MIN SLONG_MIN SSHRT_MIN
+  syn keyword cConstant SCHAR_MAX SINT_MAX SLONG_MAX SSHRT_MAX
+  if !exists("c_no_c99")
+    syn keyword cConstant LLONG_MAX ULLONG_MAX
+    syn keyword cConstant INT8_MIN INT16_MIN INT32_MIN INT64_MIN
+    syn keyword cConstant INT8_MAX INT16_MAX INT32_MAX INT64_MAX
+    syn keyword cConstant UINT8_MAX UINT16_MAX UINT32_MAX UINT64_MAX
+    syn keyword cConstant INT_LEAST8_MIN INT_LEAST16_MIN INT_LEAST32_MIN INT_LEAST64_MIN
+    syn keyword cConstant INT_LEAST8_MAX INT_LEAST16_MAX INT_LEAST32_MAX INT_LEAST64_MAX
+    syn keyword cConstant UINT_LEAST8_MAX UINT_LEAST16_MAX UINT_LEAST32_MAX UINT_LEAST64_MAX
+    syn keyword cConstant INT_FAST8_MIN INT_FAST16_MIN INT_FAST32_MIN INT_FAST64_MIN
+    syn keyword cConstant INT_FAST8_MAX INT_FAST16_MAX INT_FAST32_MAX INT_FAST64_MAX
+    syn keyword cConstant UINT_FAST8_MAX UINT_FAST16_MAX UINT_FAST32_MAX UINT_FAST64_MAX
+    syn keyword cConstant INTPTR_MIN INTPTR_MAX UINTPTR_MAX
+    syn keyword cConstant INTMAX_MIN INTMAX_MAX UINTMAX_MAX
+    syn keyword cConstant PTRDIFF_MIN PTRDIFF_MAX SIG_ATOMIC_MIN SIG_ATOMIC_MAX
+    syn keyword cConstant SIZE_MAX WCHAR_MIN WCHAR_MAX WINT_MIN WINT_MAX
+  endif
+  syn keyword cConstant FLT_RADIX FLT_ROUNDS
+  syn keyword cConstant FLT_DIG FLT_MANT_DIG FLT_EPSILON
+  syn keyword cConstant DBL_DIG DBL_MANT_DIG DBL_EPSILON
+  syn keyword cConstant LDBL_DIG LDBL_MANT_DIG LDBL_EPSILON
+  syn keyword cConstant FLT_MIN FLT_MAX FLT_MIN_EXP FLT_MAX_EXP
+  syn keyword cConstant FLT_MIN_10_EXP FLT_MAX_10_EXP
+  syn keyword cConstant DBL_MIN DBL_MAX DBL_MIN_EXP DBL_MAX_EXP
+  syn keyword cConstant DBL_MIN_10_EXP DBL_MAX_10_EXP
+  syn keyword cConstant LDBL_MIN LDBL_MAX LDBL_MIN_EXP LDBL_MAX_EXP
+  syn keyword cConstant LDBL_MIN_10_EXP LDBL_MAX_10_EXP
+  syn keyword cConstant HUGE_VAL CLOCKS_PER_SEC NULL
+  syn keyword cConstant LC_ALL LC_COLLATE LC_CTYPE LC_MONETARY
+  syn keyword cConstant LC_NUMERIC LC_TIME
+  syn keyword cConstant SIG_DFL SIG_ERR SIG_IGN
+  syn keyword cConstant SIGABRT SIGFPE SIGILL SIGHUP SIGINT SIGSEGV SIGTERM
+  " Add POSIX signals as well...
+  syn keyword cConstant SIGABRT SIGALRM SIGCHLD SIGCONT SIGFPE SIGHUP
+  syn keyword cConstant SIGILL SIGINT SIGKILL SIGPIPE SIGQUIT SIGSEGV
+  syn keyword cConstant SIGSTOP SIGTERM SIGTRAP SIGTSTP SIGTTIN SIGTTOU
+  syn keyword cConstant SIGUSR1 SIGUSR2
+  syn keyword cConstant _IOFBF _IOLBF _IONBF BUFSIZ EOF WEOF
+  syn keyword cConstant FOPEN_MAX FILENAME_MAX L_tmpnam
+  syn keyword cConstant SEEK_CUR SEEK_END SEEK_SET
+  syn keyword cConstant TMP_MAX stderr stdin stdout
+  syn keyword cConstant EXIT_FAILURE EXIT_SUCCESS RAND_MAX
+  " Add POSIX errors as well
+  syn keyword cConstant E2BIG EACCES EAGAIN EBADF EBADMSG EBUSY
+  syn keyword cConstant ECANCELED ECHILD EDEADLK EDOM EEXIST EFAULT
+  syn keyword cConstant EFBIG EILSEQ EINPROGRESS EINTR EINVAL EIO EISDIR
+  syn keyword cConstant EMFILE EMLINK EMSGSIZE ENAMETOOLONG ENFILE ENODEV
+  syn keyword cConstant ENOENT ENOEXEC ENOLCK ENOMEM ENOSPC ENOSYS
+  syn keyword cConstant ENOTDIR ENOTEMPTY ENOTSUP ENOTTY ENXIO EPERM
+  syn keyword cConstant EPIPE ERANGE EROFS ESPIPE ESRCH ETIMEDOUT EXDEV
+  " math.h
+  syn keyword cConstant M_E M_LOG2E M_LOG10E M_LN2 M_LN10 M_PI M_PI_2 M_PI_4
+  syn keyword cConstant M_1_PI M_2_PI M_2_SQRTPI M_SQRT2 M_SQRT1_2
+endif
+if !exists("c_no_c99") " ISO C99
+  syn keyword cConstant true false
+endif
+
+" Accept %: for # (C99)
+syn region	cPreCondit	start="^\s*\(%:\|#\)\s*\(if\|ifdef\|ifndef\|elif\)\>" skip="\\$" end="$" end="//"me=s-1 contains=cComment,cCppString,cCharacter,cCppParen,cParenError,cNumbers,cCommentError,cSpaceError
+syn match	cPreCondit	display "^\s*\(%:\|#\)\s*\(else\|endif\)\>"
+if !exists("c_no_if0")
+  syn region	cCppOut		start="^\s*\(%:\|#\)\s*if\s\+0\+\>" end=".\@=\|$" contains=cCppOut2
+  syn region	cCppOut2	contained start="0" end="^\s*\(%:\|#\)\s*\(endif\>\|else\>\|elif\>\)" contains=cSpaceError,cCppSkip
+  syn region	cCppSkip	contained start="^\s*\(%:\|#\)\s*\(if\>\|ifdef\>\|ifndef\>\)" skip="\\$" end="^\s*\(%:\|#\)\s*endif\>" contains=cSpaceError,cCppSkip
+endif
+syn region	cIncluded	display contained start=+"+ skip=+\\\\\|\\"+ end=+"+
+syn match	cIncluded	display contained "<[^>]*>"
+syn match	cInclude	display "^\s*\(%:\|#\)\s*include\>\s*["<]" contains=cIncluded
+"syn match cLineSkip	"\\$"
+syn cluster	cPreProcGroup	contains=cPreCondit,cIncluded,cInclude,cDefine,cErrInParen,cErrInBracket,cUserLabel,cSpecial,cOctalZero,cCppOut,cCppOut2,cCppSkip,cFormat,cNumber,cFloat,cOctal,cOctalError,cNumbersCom,cString,cCommentSkip,cCommentString,cComment2String,@cCommentGroup,cCommentStartError,cParen,cBracket,cMulti
+syn region	cDefine		start="^\s*\(%:\|#\)\s*\(define\|undef\)\>" skip="\\$" end="$" end="//"me=s-1 contains=ALLBUT,@cPreProcGroup,@Spell
+syn region	cPreProc	start="^\s*\(%:\|#\)\s*\(pragma\>\|line\>\|warning\>\|warn\>\|error\>\)" skip="\\$" end="$" keepend contains=ALLBUT,@cPreProcGroup,@Spell
+
+" Highlight User Labels
+syn cluster	cMultiGroup	contains=cIncluded,cSpecial,cCommentSkip,cCommentString,cComment2String,@cCommentGroup,cCommentStartError,cUserCont,cUserLabel,cBitField,cOctalZero,cCppOut,cCppOut2,cCppSkip,cFormat,cNumber,cFloat,cOctal,cOctalError,cNumbersCom,cCppParen,cCppBracket,cCppString
+syn region	cMulti		transparent start='?' skip='::' end=':' contains=ALLBUT,@cMultiGroup,@Spell
+" Avoid matching foo::bar() in C++ by requiring that the next char is not ':'
+syn cluster	cLabelGroup	contains=cUserLabel
+syn match	cUserCont	display "^\s*\I\i*\s*:$" contains=@cLabelGroup
+syn match	cUserCont	display ";\s*\I\i*\s*:$" contains=@cLabelGroup
+syn match	cUserCont	display "^\s*\I\i*\s*:[^:]"me=e-1 contains=@cLabelGroup
+syn match	cUserCont	display ";\s*\I\i*\s*:[^:]"me=e-1 contains=@cLabelGroup
+
+syn match	cUserLabel	display "\I\i*" contained
+
+" Avoid recognizing most bitfields as labels
+syn match	cBitField	display "^\s*\I\i*\s*:\s*[1-9]"me=e-1
+syn match	cBitField	display ";\s*\I\i*\s*:\s*[1-9]"me=e-1
+
+if exists("c_minlines")
+  let b:c_minlines = c_minlines
+else
+  if !exists("c_no_if0")
+    let b:c_minlines = 50	" #if 0 constructs can be long
+  else
+    let b:c_minlines = 15	" mostly for () constructs
+  endif
+endif
+exec "syn sync ccomment cComment minlines=" . b:c_minlines
+
+" 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_c_syn_inits")
+  if version < 508
+    let did_c_syn_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink cFormat		cSpecial
+  HiLink cCppString		cString
+  HiLink cCommentL		cComment
+  HiLink cCommentStart		cComment
+  HiLink cLabel			Label
+  HiLink cUserLabel		Label
+  HiLink cConditional		Conditional
+  HiLink cRepeat		Repeat
+  HiLink cCharacter		Character
+  HiLink cSpecialCharacter	cSpecial
+  HiLink cNumber		Number
+  HiLink cOctal			Number
+  HiLink cOctalZero		PreProc	 " link this to Error if you want
+  HiLink cFloat			Float
+  HiLink cOctalError		cError
+  HiLink cParenError		cError
+  HiLink cErrInParen		cError
+  HiLink cErrInBracket		cError
+  HiLink cCommentError		cError
+  HiLink cCommentStartError	cError
+  HiLink cSpaceError		cError
+  HiLink cSpecialError		cError
+  HiLink cOperator		Operator
+  HiLink cStructure		Structure
+  HiLink cStorageClass		StorageClass
+  HiLink cInclude		Include
+  HiLink cPreProc		PreProc
+  HiLink cDefine		Macro
+  HiLink cIncluded		cString
+  HiLink cError			Error
+  HiLink cStatement		Statement
+  HiLink cPreCondit		PreCondit
+  HiLink cType			Type
+  HiLink cConstant		Constant
+  HiLink cCommentString		cString
+  HiLink cComment2String	cString
+  HiLink cCommentSkip		cComment
+  HiLink cString		String
+  HiLink cComment		Comment
+  HiLink cSpecial		SpecialChar
+  HiLink cTodo			Todo
+  HiLink cCppSkip		cCppOut
+  HiLink cCppOut2		cCppOut
+  HiLink cCppOut		Comment
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "c"
+
+" vim: ts=8