Move C++14 numbers to vim.cpp

Author: vivkin

syntax/c.vim

@@ -182,11 +182,6 @@ syn match	cNumbersCom	display contained transparent "\<\d\|\.\d" contains=cNumbe
 syn match	cNumber		display contained "\d\+\(u\=l\{0,2}\|ll\=u\)\>"
 "hex number
 syn match	cNumber		display contained "0x\x\+\(u\=l\{0,2}\|ll\=u\)\>"
-if s:ft ==# 'cpp' && !exists("cpp_no_cpp14")
-  syn match	cNumber		display contained "\d\('\=\d\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
-  syn match	cNumber		display contained "0x\x\('\=\x\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
-  syn match	cNumber		display contained "0b[01]\('\=[01]\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
-endif
 " 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"

syntax/cpp.vim

@@ -51,6 +51,15 @@ if !exists("cpp_no_cpp11")
   syn region cppRawString	matchgroup=cppRawStringDelimiter start=+\%(u8\|[uLU]\)\=R"\z([[:alnum:]_{}[\]#<>%:;.?*\+\-/\^&|~!=,"']\{,16}\)(+ end=+)\z1"+ contains=@Spell
 endif
 
+" C++ 14 extensions
+if !exists("cpp_no_cpp14")
+  syn case ignore
+  syn match cppNumber		display "\<0b[01]\('\=[01]\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
+  syn match cppNumber		display "\<[1-9]\('\=\d\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
+  syn match cppNumber		display "\<0x\x\('\=\x\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
+  syn case match
+endif
+
 " The minimum and maximum operators in GNU C++
 syn match cppMinMax "[<>]?"
 
@@ -75,6 +84,7 @@ if version >= 508 || !exists("did_cpp_syntax_inits")
   HiLink cppConstant		Constant
   HiLink cppRawStringDelimiter	Delimiter
   HiLink cppRawString		String
+  HiLink cppNumber		Number
   delcommand HiLink
 endif