From 7edf477f64b65ffe22c966d6a8dcc3edd0fb6997 Mon Sep 17 00:00:00 2001
From: Jacobo de Vera <devel@jacobodevera.com>
Date: Mon, 27 Apr 2026 12:15:27 +0100
Subject: [PATCH] Fix --regex-pattern being ignored by the CLI

The `--regex-pattern` argument was parsed by argparse but never forwarded
into the `slugify()` call, so the option had no effect from the CLI.

Fixes #175.
---
 CHANGELOG.md        | 1 +
 slugify/__main__.py | 1 +
 test.py             | 9 ++++++++-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 537460e..44e0bb9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## Unreleased
 
+- Fix `--regex-pattern` being ignored by the CLI.
 - Support Python 3.14.
 - Drop support for Python 3.9 and lower.
 - Use tox for local test runs and in CI.
diff --git a/slugify/__main__.py b/slugify/__main__.py
index 4e6b3d9..6e8109d 100644
--- a/slugify/__main__.py
+++ b/slugify/__main__.py
@@ -76,6 +76,7 @@ def slugify_params(args: argparse.Namespace) -> dict[str, Any]:
         save_order=args.save_order,
         separator=args.separator,
         stopwords=args.stopwords,
+        regex_pattern=args.regex_pattern,
         lowercase=args.lowercase,
         replacements=args.replacements,
         allow_unicode=args.allow_unicode
diff --git a/test.py b/test.py
index fcec4b6..1c321d6 100644
--- a/test.py
+++ b/test.py
@@ -575,7 +575,8 @@ class TestCommandParams(unittest.TestCase):
         'separator': '-',
         'stopwords': None,
         'lowercase': True,
-        'replacements': None
+        'replacements': None,
+        'regex_pattern': None
     }
 
     def get_params_from_cli(self, *argv):
@@ -623,6 +624,12 @@ def test_replacements_wrong(self):
         self.assertEqual(err.exception.code, 2)
         self.assertIn("Replacements must be of the form: ORIGINAL->REPLACED", cse.getvalue())
 
+    def test_regex_pattern(self):
+        params = self.get_params_from_cli('--regex-pattern', '[^-a-z0-9_]+', '___This is a test___')
+        expected = self.make_params(text='___This is a test___', regex_pattern='[^-a-z0-9_]+')
+        self.assertParamsMatch(expected, params)
+        self.assertEqual(slugify(**params), '___this-is-a-test___')
+
     def test_text_in_cli(self):
         params = self.get_params_from_cli('Cool Text')
         expected = self.make_params(text='Cool Text')