runtime(vim): Update base-syntax, match empty blob and :abclear modifiers (#14318)

- Match empty blob literals.
- Match modifier arguments to :abclear commands.

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

runtime/syntax/generator/gen_syntax_vim.vim

@@ -2,8 +2,8 @@
 " Language: Vim script
 " Maintainer: Hirohito Higashi (h_east)
 " URL: https://github.com/vim-jp/syntax-vim-ex
-" Last Change: 2024 Mar 14
-" Version: 2.0.6
+" Last Change: 2024 Mar 28
+" Version: 2.0.7
 
 let s:keepcpo= &cpo
 set cpo&vim
@@ -269,7 +269,9 @@ function! s:get_vim_command_type(cmd_name)
 	"   4: map
 	"   5: mapclear
 	"   6: unmap
+	"   7: abclear
 	"   99: (Exclude registration of "syn keyword")
+	let ab_prefix   = '^[ci]\?'
 	let menu_prefix = '^\%([acinostvx]\?\|tl\)'
 	let map_prefix  = '^[acilnostvx]\?'
 	let exclude_list = [
@@ -292,6 +294,8 @@ function! s:get_vim_command_type(cmd_name)
 		let ret = 99
 	elseif a:cmd_name =~# '^\%(\%(un\)\?abbreviate\|noreabbrev\|\l\%(nore\|un\)\?abbrev\)$'
 		let ret = 2
+	elseif a:cmd_name =~# ab_prefix . 'abclear$'
+		let ret = 7
 	elseif a:cmd_name =~# menu_prefix . '\%(nore\|un\)\?menu$'
 		let ret = 3
 	elseif a:cmd_name =~# map_prefix . '\%(nore\)\?map$'
@@ -618,6 +622,8 @@ function! s:update_syntax_vim_file(vim_info)
 		let li = a:vim_info.cmd
 		let lnum = s:search_and_check(kword . ' abbrev', base_fname, str_info)
 		let lnum = s:append_syn_vimcmd(lnum, str_info, li, 2)
+		let lnum = s:search_and_check(kword . ' abclear', base_fname, str_info)
+		let lnum = s:append_syn_vimcmd(lnum, str_info, li, 7)
 		" vimCommand - map
 		let lnum = s:search_and_check(kword . ' map', base_fname, str_info)
 		let lnum = s:append_syn_vimcmd(lnum, str_info, li, 4)