From 26a8d7c26b8a3a7b66b4f4da818059d097b59a58 Mon Sep 17 00:00:00 2001
From: prantikmedhi <140103052+prantikmedhi@users.noreply.github.com>
Date: Wed, 13 May 2026 20:46:47 +0530
Subject: [PATCH] fix(strings): reject multi-char split separators

---
 strings/split.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/strings/split.py b/strings/split.py
index ed194ec69c2f..4a7f5b669645 100644
--- a/strings/split.py
+++ b/strings/split.py
@@ -17,8 +17,15 @@ def split(string: str, separator: str = " ") -> list:
 
     >>> split(";abbb;;c;", separator=';')
     ['', 'abbb', '', 'c', '']
+
+    >>> split("a--b--c", separator="--")
+    Traceback (most recent call last):
+    ValueError: separator must be a single character
     """
 
+    if len(separator) != 1:
+        raise ValueError("separator must be a single character")
+
     split_words = []
 
     last_index = 0