Some questions about references tags

[honghao12]

1. Does ctags support only export "import" references tag
   like this:

{"_type": "tag", "name": "xxx", "path": "xxx", "pattern": "xxx", "line": 17, "kind": "package", "roles": "imported", "end": 17}
{"_type": "tag", "name": "xxx", "path": "xxx", "pattern": "xxx", "line": 30, "kind": "package", "roles": "imported", "end": 30}

2.Does ctags has some way to extend references tag

[masatake]

1. Does ctags support only export "import" references tag

ctags supports more roles; "import" is one of the roles. However, they are limited.
See the output of ./ctags --list-roles=all.'*'.

2.Does ctags has some way to extend references tag

$ cat /tmp/input.foo 
var x
x=1
func(x)
$ cat /tmp/foo.ctags
--langdef=Foo
--map-Foo=.foo
--kinddef-Foo=v,var,variables
--_roledef-Foo.v=assigned,assigned with =
--_roledef-Foo.v=passed,passed to a function as an argument

--regex-Foo=/^var +([a-z])/\1/v/
--regex-Foo=/^([a-z])=.*/\1/v/{_role=assigned}
--regex-Foo=/^[a-z]+\(([a-z]+)\)/\1/v/{_role=passed}
$ ./ctags --options=NONE --options=/tmp/foo.ctags --extras=+r --fields=+r --sort=no -o - /tmp/input.foo 
ctags: Notice: No options will be read from files or environment
x	/tmp/input.foo	/^var x$/;"	v	roles:def
x	/tmp/input.foo	/^x=1$/;"	v	roles:assigned
x	/tmp/input.foo	/^func(x)$/;"	v	roles:passed
$ 

[masatake]

I want to convert this into a discussion.