Module spec_normalize 

Canonical pretty-printer for -spec/-callback/-type right-hand sides.

The job: produce a single canonical string for any given semantic signature, so reformatting in source produces no snapshot diff. The algorithm is intentionally simple: it normalizes whitespace, balances brackets, wraps at top-level | past a width target.

Functions

normalize_elixir_signature

Elixir entry point: $ is an ordinary byte in Elixir type text, so the char-literal-aware Erlang lexing must not apply.

normalize_signature

Erlang entry point: $c char literals, triple-quoted strings, and sigils are lexed as such, so $" or $, cannot derail the walk.