From f37c14fc450173c66733eda5cb02d5c90ee7bb66 Mon Sep 17 00:00:00 2001
From: Steve Rowley <srowley@gmail.com>
Date: Thu, 30 Apr 2026 19:52:01 -0500
Subject: [PATCH] docs: document :nullstr option with from_csv/2

---
 lib/dux.ex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/dux.ex b/lib/dux.ex
index b37bed3..8e1ca11 100644
--- a/lib/dux.ex
+++ b/lib/dux.ex
@@ -226,6 +226,7 @@ defmodule Dux do
 
     * `:delimiter` - field delimiter (default: `","`)
     * `:header` - whether the file has a header row (default: `true`)
+    * `:nullstr` — string to treat as NULL (e.g., `"NA"`)
     * `:null_padding` - pad missing columns with NULL (default: `false`)
     * `:skip` - number of rows to skip at the start
     * `:columns` - list of column names or indices to read