nvim-treesitter/runtime/queries/supercollider/locals.scm

; Scopes
[
  (function_call)
  (code_block)
  (function_block)
] @local.scope

; Definitions
(argument
  name: (identifier) @local.definition.parameter
  (#set! definition.var.scope "local"))

(variable_definition
  name: (variable
    (local_var
      (identifier) @local.definition.var)))

(variable_definition
  name: (variable
    (environment_var
      (identifier) @local.definition.var))
  (#set! definition.var.scope "global"))

(function_definition
  name: (variable) @local.definition.var
  (#set! definition.var.scope "parent"))

(identifier) @local.reference