From e53ea093e24c718baf17eeebdbebc3b612adb906 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Patryk=20Ma=C5=82ek?=
 <69143962+pmalek-sumo@users.noreply.github.com>
Date: Wed, 24 Mar 2021 18:04:48 +0100
Subject: [PATCH] line_length: skip all hash signs starting comment

---
 tests/rules/test_line_length.py | 21 +++++++++++++++++++++
 yamllint/rules/line_length.py   |  6 +++++-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/tests/rules/test_line_length.py b/tests/rules/test_line_length.py
index d63afb34..245fe4d0 100644
--- a/tests/rules/test_line_length.py
+++ b/tests/rules/test_line_length.py
@@ -116,6 +116,27 @@ def test_non_breakable_word(self):
                    'long_line: http://localhost/very/very/long/url\n'
                    '...\n', conf, problem=(2, 21))
 
+        conf = 'line-length: {max: 20, allow-non-breakable-words: true}'
+        self.check('---\n'
+                   '# http://www.verylongurlurlurlurlurlurlurlurl.com\n'
+                   'key:\n'
+                   '  subkey: value\n', conf)
+        self.check('---\n'
+                   '## http://www.verylongurlurlurlurlurlurlurlurl.com\n'
+                   'key:\n'
+                   '  subkey: value\n', conf)
+        self.check('---\n'
+                   '# # http://www.verylongurlurlurlurlurlurlurlurl.com\n'
+                   'key:\n'
+                   '  subkey: value\n', conf,
+                   problem=(2, 21))
+        self.check('---\n'
+                   '#A http://www.verylongurlurlurlurlurlurlurlurl.com\n'
+                   'key:\n'
+                   '  subkey: value\n', conf,
+                   problem1=(2, 2, 'comments'),
+                   problem2=(2, 21, 'line-length'))
+
         conf = ('line-length: {max: 20, allow-non-breakable-words: true}\n'
                 'trailing-spaces: disable')
         self.check('---\n'
diff --git a/yamllint/rules/line_length.py b/yamllint/rules/line_length.py
index 04312408..cfc328ce 100644
--- a/yamllint/rules/line_length.py
+++ b/yamllint/rules/line_length.py
@@ -140,7 +140,11 @@ def check(conf, line):
                 start += 1
 
             if start != line.end:
-                if line.buffer[start] in ('#', '-'):
+                if line.buffer[start] == '#':
+                    while line.buffer[start] == '#':
+                        start += 1
+                    start += 1
+                elif line.buffer[start] == '-':
                     start += 2
 
                 if line.buffer.find(' ', start, line.end) == -1: