Improve VimL regex highlighting

**NOTES:**
- PR is not yet merged in upstream repository (SalGnt/Sublime-VimL#12),
but sublime-syntax file is already updated with changes.
- Updated syntax test files are added as well

This fixes #1064

assets/syntaxes/02_Extra/VimL.sublime-syntax

@@ -75,10 +75,10 @@ contexts:
     - match: '''(''''|\n[^\S\n]*\\|[^\n''])*'''
       scope: string.quoted.single.viml
   string_regex:
-    - match: '/(\\\\|\\/|\n[^\S\n]*\\|[^\n/])*/'
+    - match: '[gvs]{1}/(\\\\|\\/|\n[^\S\n]*\\|[^\n/])*/'
       scope: string.regexp.viml
   support_function:
-    - match: \b(set(local|global)?|let|command|filetype|colorscheme|\w*map|\w*a(b|brev)?|syn|exe(c|cute)?|ec(ho|)?|au(tocmd|)?)\b
+    - match: \b(set(local|global)?|let|command|filetype|syntax|colorscheme|\w*map|\w*a(b|brev)?|syn|exe(c|cute)?|ec(ho|)?|au(tocmd|)?)\b
       scope: support.function.viml
   support_type:
     - match: <.*?>

tests/syntax-tests/highlighted/VimL/source.vim

@@ -53,6 +53,7 @@
 
 command! -nargs=? Echo :call EchoFunc(<args>)
 
+" TODO test stuff
 let g:global = "global var"
 let s:script_var = "script var"
 let w:window_var = "window war"
@@ -67,19 +68,25 @@
 echo "Hello" == "Hello2"
 echo "Hello" is "Hello2"
 echo "Hello" isnot "Hello2"
-[38;2;102;217;239mecho[0m[38;2;248;248;242m [0m[38;2;230;219;116m"Hello"[0m[38;2;248;248;242m [0m[38;2;249;38;114m=~[0m[38;2;248;248;242m [0m[38;2;230;219;116m"Hello2"[0m
+[38;2;102;217;239mecho[0m[38;2;248;248;242m [0m[38;2;230;219;116m"Hello"[0m[38;2;248;248;242m [0m[38;2;249;38;114m=~[0m[38;2;248;248;242m [0m[38;2;230;219;116m'xx*'[0m
 echo "Hello" !~ "Hello2"
 echo "Hello" !~ "Hello2"
 
 echo "/This/should/not/be/a/regex"
 
 " Error case from issue #1604 (https://github.com/sharkdp/bat/issues/1064)
-set runtimepath=~/foo/bar
+set runtimepath=~/foo/bar
+
+silent g/Aap/p
 
 let g:dict = {}
 let g:dict.item = ['l1', 'l2']
 
 let g:dict2 = {'dict_item': ['l1', 'l2'], 'di2': 'x'}
 
+silent g/regex/
+silent v/regex/
+silent %s/regex/not_regex/
+
 filetype plugin indent on
-[38;2;248;248;242msyntax enable[0m
+[38;2;102;217;239msyntax[0m[38;2;248;248;242m enable[0m

tests/syntax-tests/source/VimL/source.vim

@@ -53,6 +53,7 @@ imap <C-h> <C-r>=HelloWorld("World")<CR>
 
 command! -nargs=? Echo :call EchoFunc(<args>)
 
+" TODO test stuff
 let g:global = "global var"
 let s:script_var = "script var"
 let w:window_var = "window war"
@@ -67,7 +68,7 @@ echo "Hello" ==? "Hello2"
 echo "Hello" == "Hello2"
 echo "Hello" is "Hello2"
 echo "Hello" isnot "Hello2"
-echo "Hello" =~ "Hello2"
+echo "Hello" =~ 'xx*'
 echo "Hello" !~ "Hello2"
 echo "Hello" !~ "Hello2"
 
@@ -76,10 +77,16 @@ echo "/This/should/not/be/a/regex"
 " Error case from issue #1604 (https://github.com/sharkdp/bat/issues/1064)
 set runtimepath=~/foo/bar
 
+silent g/Aap/p
+
 let g:dict = {}
 let g:dict.item = ['l1', 'l2']
 
 let g:dict2 = {'dict_item': ['l1', 'l2'], 'di2': 'x'}
 
+silent g/regex/
+silent v/regex/
+silent %s/regex/not_regex/
+
 filetype plugin indent on
 syntax enable