nvim-treesitter/queries/pony/indents.scm

[
  (use_statement)
  (actor_definition)
  (class_definition)
  (primitive_definition)
  (interface_definition)
  (trait_definition)
  (struct_definition)
  (constructor)
  (method)
  (behavior)
  (parameters)
  (if_block)
  (then_block)
  (elseif_block)
  (else_block)
  (iftype_statement)
  (elseiftype_block)
  (do_block)
  (match_statement)
  (parenthesized_expression)
  (tuple_expression)
  (array_literal)
  (object_literal)
] @indent.begin

(try_statement
  (block) @indent.begin)

(repeat_statement
  (block) @indent.begin)

(recover_statement
  (block) @indent.begin)

(return_statement
  (block) @indent.begin)

(continue_statement
  (block) @indent.begin)

(break_statement
  (block) @indent.begin)

[
  "}"
  "]"
  ")"
] @indent.end

[
  "{"
  "}"
] @indent.branch

[
  "["
  "]"
] @indent.branch

[
  "("
  ")"
] @indent.branch

[
  (ERROR)
  (string)
  (line_comment)
  (block_comment)
] @indent.auto