ctags config file, support lua, protobuf, thrift and objective-c

.ctags

--langdef=MYLUA
--langmap=MYLUA:.lua
--regex-MYLUA=/^local[ \t]+([a-zA-Z0-9_]+)[ \t]*=[ \t]*\{/\1/v,var/
--regex-MYLUA=/[ \t]*([a-zA-Z0-9_]+)[ \t]*=[ \t]*function[ \t]*\(/\1/f,function/
--regex-MYLUA=/function[ \t]+([a-zA-Z0-9_]+)[\.:]([a-zA-Z0-9_]+)[ \t]*\(/\2/f,function/

--langdef=PROTO
--langmap=PROTO:.proto
--regex-PROTO=/^[ \t]*message[ \t]+([a-zA-Z0-9_\.]+)/\1/m,message/
--regex-PROTO=/^[ \t]*(required|repeated|optional)[ \t]+[a-zA-Z0-9_\.]+[ \t]+([a-zA-Z0-9_]+)[ \t]*=/\2/f,field/

--langdef=thrift
--langmap=thrift:.thrift
--regex-thrift=/^[ \t]*exception[ \t]+([a-zA-Z0-9_]+)/\1/x,exception/
--regex-thrift=/^[ \t]*enum[ \t]+([a-zA-Z0-9_]+)/\1/e,enum/
--regex-thrift=/^[ \t]*struct[ \t]+([a-zA-Z0-9_]+)/\1/s,struct/
--regex-thrift=/^[ \t]*service[ \t]+([a-zA-Z0-9_]+)/\1/v,service/
--regex-thrift=/^[ \t]*[0-9]+:[ \t]+([a-zA-Z0-9_]+)[ \t]+([a-zA-Z0-9_]+)/\2/m,member/
--regex-thrift=/^[ \t]*([a-zA-Z0-9_]+)[ \t]+=/\1/a,value/
--regex-thrift=/^[ \t]*[a-zA-Z0-9_<>]+[ \t]+([a-zA-Z0-9_]+)[ \t]*\(/\1/f,function/

--langdef=objc
--langmap=objc:.m.h
--regex-objc=/^[ \t]*[-+][ \t]*\([^\)]*\)[ \t]*([a-zA-Z0-9_]+)/\1/m,method/
--regex-objc=/^[ \t]*\@property.+[\* \t]+([a-zA-Z0-9_]+)[ \t]*;/\1/p,property/
--regex-objc=/^[ \t]*\@interface[ \t]+([a-zA-Z0-9_]+)/\1/i,interface/
--regex-objc=/^[ \t]*\@implementation[ \t]+([a-zA-Z0-9_]+)/\1/c,class/