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	diff --git a/lib/open_api_spex/cast_string.ex b/lib/open_api_spex/cast_string.ex
	index e67cbbb..9e9d634 100644
	--- a/lib/open_api_spex/cast_string.ex
	+++ b/lib/open_api_spex/cast_string.ex
	@@ -1,41 +1,40 @@
	defmodule OpenApiSpex.CastString do
	@moduledoc false
	alias OpenApiSpex.CastContext

	- def cast(%{value: value, schema: %{pattern: pattern}} = ctx)
	- when not is_nil(pattern) and is_binary(value) do
	- if Regex.match?(pattern, value) do
	- {:ok, value}
	- else
	- CastContext.error(ctx, {:invalid_format, pattern})
	- end
	- end
	-
	def cast(%{value: value} = ctx) when is_binary(value) do
	cast_binary(ctx)
	end

	def cast(ctx) do
	CastContext.error(ctx, {:invalid_type, :string})
	end

	## Private functions

	+ defp cast_binary(%{value: value, schema: %{pattern: pattern}} = ctx) when not is_nil(pattern) do
	+ if Regex.match?(pattern, value) do
	+ {:ok, value}
	+ else
	+ CastContext.error(ctx, {:invalid_format, pattern})
	+ end
	+ end
	+
	defp cast_binary(%{value: value, schema: %{minLength: min_length}} = ctx)
	when is_integer(min_length) do
	# Note: This is not part of the JSON Shema spec: trim string before measuring length
	# It's just too important to miss
	trimmed = String.trim(value)
	length = String.length(trimmed)

	if length < min_length do
	CastContext.error(ctx, {:min_length, length})
	else
	{:ok, value}
	end
	end

	defp cast_binary(%{value: value}) do
	{:ok, value}
	end
	end