Incorrect syntax highlighting Vim (Actionscript 3)

The braces shown below after ...ret):String are incorrectly being highlighted as red

I'm using the following syntax definition file for actionscript:

• http://www.vim.org/scripts/script.php?script_id=1061

2 Questions:

1. Does anyone happen to know off-hand what causes this weird matching?
2. Is there anyway of identifyin开发者_运维问答g the current syntax matching group under the cursor?

1. It's because the syntax file doesn't support anonymous functions. I guess usually (in many other languages) that's an error? Fix it by removing syn match actionScriptInParen contained "[{}]" from actionscript.vim.

2. I don't know.