runtime(vim): Update base syntax, improve :match highlighting

- Match the range prefix separately as a count.
- Match an explicit count of 1, rarely used but seen in the wild.
- Allow whitespace between the count and command.

closes: #17717

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/syntax/testdir/input/vim_ex_match.vim

@@ -5,6 +5,10 @@ match FooGroup /Foo/
 match
 match none
 
+1match FooGroup /Foo/
+1match
+1match none
+
 2match FooGroup /Foo/
 2match
 2match none
@@ -13,12 +17,24 @@ match none
 3match
 3match none
 
+1 match FooGroup /Foo/
+2 match FooGroup /Foo/
+3 match FooGroup /Foo/
+
 
 " Differentiate match() from :match
 
 call match(haystack, 'needle')
 call match (haystack, 'needle')
 
+let foo = match(haystack, 'needle')
+echo match(haystack, 'needle')
+echo (match(haystack, 'needle') + 42)
+echo (42 + match(haystack, 'needle'))
+
+
+" Containing functions
+
 function Foo()
   match FooGroup /Foo/
   call match(haystack, 'needle')
@@ -28,9 +44,21 @@ endfunction
 def Foo()
   # command
   match FooGroup /Foo/
-  # function
-  match(haystack, 'needle')
   # Error: bad :match command - trailing characters
   match (haystack, 'needle')
+  # function
+  match(haystack, 'needle')
+  call match(haystack, 'needle')
 enddef
 
+
+" Trailing bar and comments
+
+match FooGroup /Foo/ | echo "Foo"
+match                | echo "Foo"
+match none           | echo "Foo"
+
+match FooGroup /Foo/ " comment
+match                " comment
+match none           " comment
+