def extract_function(self, funcname):
func_m = re.search(
r'''(?x)
- (?:function\s+%s|[{;]%s\s*=\s*function|var\s+%s\s*=\s*function)\s*
+ (?:function\s+%s|[{;,]\s*%s\s*=\s*function|var\s+%s\s*=\s*function)\s*
\((?P<args>[^)]*)\)\s*
\{(?P<code>[^}]+)\}''' % (
re.escape(funcname), re.escape(funcname), re.escape(funcname)),