Yep, just make dbg() one of the clauses. I’ll paste here the actual running code and the output. I’m pretty sure it’s the same as above:

  @spec parse_human_date_string(binary) :: Date.t | nil
  def parse_human_date_string(text) when is_binary(text) do
    with [_, raw_month, raw_day, year] <- Regex.run(~r/^(.+) (.+), (\d\d\d\d)$/, text),
          day        <- String.pad_leading(raw_day, 2, "0"),
          month_num  <- Integer.to_string(Enum.find_index(@months, &(&1 == raw_month)) + 1),
          month      <- String.pad_leading(month_num, 2, "0"),
         {:ok, date} <- Date.from_iso8601("#{year}-#{month}-#{day}"),
         dbg() do
      date
    else
      _ -> nil
    end
  end

~/s/P/oregon-revised-statutes-crawler ❯❯❯ mix test                                                       refactor ✱
Compiling 1 file (.ex)
Generated crawlers app
................................................................................................................................[lib/news/date_modified.ex:99: News.DateModified.parse_human_date_string/1]
binding() #=> [
  date: ~D[2023-12-05],
  day: "05",
  month: "12",
  month_num: "12",
  raw_day: "5",
  raw_month: "December",
  text: "December 5, 2023",
  year: "2023"
]

..........[lib/news/date_modified.ex:99: News.DateModified.parse_human_date_string/1]
binding() #=> [
  date: ~D[1997-05-26],
  day: "26",
  month: "05",
  month_num: "5",
  raw_day: "26",
  raw_month: "May",
  text: "May 26, 1997",
  year: "1997"
]

..[lib/news/date_modified.ex:99: News.DateModified.parse_human_date_string/1]
binding() #=> [
  date: ~D[2020-01-01],
  day: "01",
  month: "01",
  month_num: "1",
  raw_day: "1",
  raw_month: "January",
  text: "January 1, 2020",
  year: "2020"
]

.......
Finished in 0.9 seconds (0.4s async, 0.5s sync)
17 doctests, 130 tests, 0 failures