From f04ec7504e7ff3a3df376298c4353496fd840e1a Mon Sep 17 00:00:00 2001
From: Erez Shinan <erezshin+git@gmail.com>
Date: Fri, 31 Oct 2025 17:40:05 -0500
Subject: [PATCH] lexer: Always init line_ctr,  for a more predictable
 interface, even if not needed

---
 lark/lexer.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lark/lexer.py b/lark/lexer.py
index 9aa10c2e..0b483d17 100644
--- a/lark/lexer.py
+++ b/lark/lexer.py
@@ -429,6 +429,8 @@ def __init__(self, text: TextSlice, line_ctr: Optional[LineCounter] = None, last
 
             if not (text.start <= line_ctr.char_pos <= text.end):
                 raise ValueError("LineCounter.char_pos is out of bounds")
+        else:
+            line_ctr = line_ctr or LineCounter('\n')
 
         self.text = text
         self.line_ctr = line_ctr