Update runtime files

runtime/syntax/squirrel.vim

@@ -0,0 +1,50 @@
+" Vim syntax file
+" Language: squirrel
+" Current Maintainer: Matt Dunford (zenmatic@gmail.com)
+" URL: https://github.com/zenmatic/vim-syntax-squirrel
+" Last Change:	2021 Nov 28
+
+" http://squirrel-lang.org/
+
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
+  finish
+endif
+
+" inform C syntax that the file was included from cpp.vim
+let b:filetype_in_cpp_family = 1
+
+" Read the C syntax to start with
+runtime! syntax/c.vim
+unlet b:current_syntax
+
+" squirrel extensions
+syn keyword squirrelStatement	delete this in yield resume base clone
+syn keyword squirrelAccess	local
+syn keyword cConstant           null
+syn keyword squirrelModifier	static
+syn keyword squirrelType	bool instanceof typeof
+syn keyword squirrelExceptions	throw try catch
+syn keyword squirrelStructure	class function extends constructor
+syn keyword squirrelBoolean	true false
+syn keyword squirrelRepeat	foreach
+
+syn region squirrelMultiString start='@"' end='"$' end='";$'me=e-1
+
+syn match squirrelShComment "^\s*#.*$"
+
+" Default highlighting
+hi def link squirrelAccess		squirrelStatement
+hi def link squirrelExceptions		Exception
+hi def link squirrelStatement		Statement
+hi def link squirrelModifier		Type
+hi def link squirrelType		Type
+hi def link squirrelStructure		Structure
+hi def link squirrelBoolean		Boolean
+hi def link squirrelMultiString		String
+hi def link squirrelRepeat		cRepeat
+hi def link squirrelShComment		Comment
+
+let b:current_syntax = "squirrel"
+
+" vim: ts=8